KR102224215B1 - Non-shirinkage mortar composition with crack resistance and the concrete structure section restoration method using thereof - Google Patents
Non-shirinkage mortar composition with crack resistance and the concrete structure section restoration method using thereof Download PDFInfo
- Publication number
- KR102224215B1 KR102224215B1 KR1020200095201A KR20200095201A KR102224215B1 KR 102224215 B1 KR102224215 B1 KR 102224215B1 KR 1020200095201 A KR1020200095201 A KR 1020200095201A KR 20200095201 A KR20200095201 A KR 20200095201A KR 102224215 B1 KR102224215 B1 KR 102224215B1
- Authority
- KR
- South Korea
- Prior art keywords
- weight
- parts
- concrete structure
- resistance
- shrinkage
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/5079—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/32—Polyethers, e.g. alkylphenol polyglycolether
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/48—Macromolecular compounds
- C04B41/4803—Polysaccharides, e.g. cellulose, or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/48—Macromolecular compounds
- C04B41/488—Other macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
- C04B41/4896—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5022—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with vitreous materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5024—Silicates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
- C04B41/5035—Silica
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/508—Aluminous cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/508—Aluminous cements
- C04B41/5081—Calcium alumino sulfate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/5085—Calcium sulfate cements
- C04B41/5087—Anhydrite
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/44—Thickening, gelling or viscosity increasing agents
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Architecture (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
본 발명은, 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물 및 이를 이용한 콘크리트 구조물 단면보수공법에 관한 것으로, 보다 상세하게는 별도의 수축저감제 또는 균열방지제를 사용하지 않고도 콘크리트 구조물 단면보수시 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물을 제공함과 동시에 이를 이용하여 콘크리트 구조물 단면을 보수하는 시공공법에 관한 것이다.The present invention relates to a mortar composition having crack resistance and shrinkage resistance, and a concrete structure section repair method using the same, and more particularly, to crack resistance and shrinkage when repairing the section of a concrete structure without using a separate shrinkage reducing agent or a crack inhibitor. It relates to a construction method of providing a mortar composition having resistance and repairing a cross section of a concrete structure by using it.
콘크리트는 시멘트, 골재 및 물을 혼합하여 건축물을 건설하거나 도로, 교량, 항만, 댐, 터널, 원형관거 등 각종 토목 구조물을 건설하는데 많이 사용되고 있으나, 이러한 콘크리트 구조물은 사용하면서 시간이 경과하게 되면, 염해나 중성화, 알칼리 골재 반응, 생화학적 부식 외에 물의 침투에 의한 강재의 부식 팽창 등으로 구조물이 열화되면서 장기적으로 내구성과 사용성이 저하되며, 이러한 구조물의 열화는 계속 진행되면 결국 구조물의 붕괴를 초래할 수 있으므로 콘크리트 구조물을 지속적으로 관리하고 보수하여야 한다. Concrete is widely used to construct buildings by mixing cement, aggregate, and water, or to construct various civil structures such as roads, bridges, ports, dams, tunnels, and circular pipes. B. Long-term durability and usability are deteriorated as the structure deteriorates due to corrosion and expansion of steel due to penetration of water in addition to neutralization, alkali aggregate reaction, and biochemical corrosion, and if the deterioration of such structures continues, it may eventually lead to collapse of the structure. Concrete structures must be continuously managed and repaired.
특히, 콘크리트 구조물의 열화에 따라 구조물의 표면이 박리되거나 균열이 발생하게 되면, 열화요인의 이동을 쉽게 하여 열화의 진행을 촉진시키므로 철근 콘크리트 구조물의 안정성과 성능을 유지하기 위해서는 열화의 초기에 보수를 실시하여 더이상의 열화의 진행을 억제하고 내구수명을 증진하고 성능저하를 방지하여야 한다. In particular, if the surface of the structure is peeled off or cracks occur due to deterioration of the concrete structure, the deterioration factor can easily move to promote the progression of deterioration. It should be implemented to suppress further deterioration, improve durability, and prevent performance degradation.
상기와 같이, 콘크리트 구조물의 보수를 위하여 단면복구 및 보수 모르타르가 사용되는데, 단면복구 및 보수 모르타르는 일반적으로 콘크리트보다 결합재를 많이 사용하기 때문에 건조수축이 심하고 균열 발생도 빈번하다. As described above, cross-section restoration and repair mortar are used for repair of concrete structures. Since the cross-section restoration and repair mortar generally uses more bonding material than concrete, dry shrinkage is severe and cracks are frequently generated.
또한, 단면복구 및 보수 모르타르에 균열이 발생하면 단면복구 및 보수 모르타르의 내구성 저하는 물론 복구대상인 콘크리트의 내구성 저하도 초래하며, 특히, 균열을 통해 수분이 침투되는데, 수분은 각종 유해 성분의 이동수단이 되면서 동결융해의 원인이 되므로 내구성 저하를 초래하는 것이다. In addition, when a crack occurs in the repair mortar and the repair of the section, the durability of the repair mortar and the repair mortar are deteriorated, and the durability of the concrete to be restored is also deteriorated. As this becomes the cause of freezing and thawing, durability decreases.
이에 따라 단면복구 및 보수 모르타르는 단순 발수성을 보유하는 것만으로는 부족하고, 건조수축에 의한 균열을 억제하여 치밀한 경화체를 형성시킬 수 있는 특성을 보유하는 것이 중요하다고 할 수 있다.Accordingly, it can be said that it is not enough to have a simple water repellency for a cross-section restoration and repair mortar, and it is important to have a characteristic capable of forming a dense hardened body by suppressing cracks caused by drying shrinkage.
한편, 기존의 콘크리트 단면복구 및 보수 공법은 기설 콘크리트 구조물에 접착제를 도포하거나, 철근 또는 철재의 연결재를 설치하여 단면복구 및 보수 모르타르를 타설하여 구조물을 일체화시키는데, 접착제의 도포방법은 접착제의 첨가제로 에폭시 수지를 사용함으로써 시공 초기에는 높은 부착력을 지니게 되지만 시간이 지남에 따라 콘크리트의 물리적인 특성(열팽창계수, 건조수축)이 다르기 때문에 장기적으로는 콘크리트 구조물과 단면복구 및 보수 모르타르 접착면에서 수축에 의한 균열, 탈락이 발생하여 건물의 붕괴를 초래할 수 있는 문제점이 있다 On the other hand, the existing concrete section restoration and repair method integrates the structure by applying an adhesive to the existing concrete structure or by installing a reinforcing bar or steel connecting material to place a cross section restoration and repair mortar, and the method of applying the adhesive is an additive of the adhesive. By using epoxy resin, it has high adhesion at the beginning of construction, but over time, the physical properties (coefficient of thermal expansion, drying shrinkage) of concrete are different. There is a problem that may cause the building to collapse due to cracking and falling off.
이에 따라, 최근에는 균열 또는 수축을 방지할 수 있는 단면복구 및 보수 모르타르 및 이를 이용한 단면복구 및 보수시공방법이 많이 개발되었는데, 한국등록특허 10-1255115(등록일자 2013년04월10일)에는 콘크리트 구조물의 손상부 보수를 위한 무균열 보수모르타르로서, 결합재 20.0∼55.0 중량부와, 수축저감제 0.5∼2.5 중량부와, 섬유보강재 0.1∼1.5 중량부와, 혼화제 0.1∼0.5 중량부 및 골재 30.0∼65.0 중량부로 이루어지며, 상기 결합재는 시멘트를 사용하며, 상기 수축저감제로 팽창재와 무수석고를 사용하되, 상기 팽창재는 0.2∼1.5 중량부, 상기 무수석고(CaSO4)는 0.3∼1.0 중량부로 이루어지는 무균열 보수모르타르가 공지되어 있다.Accordingly, in recent years, a number of section repair and repair mortars that can prevent cracking or shrinkage and a section repair and repair construction method using the same have been developed. Korean Patent Registration No. 10-1255115 (registration date April 10, 2013) As a crack-free repair mortar for repairing damaged parts of a structure, 20.0 to 55.0 parts by weight of a binder, 0.5 to 2.5 parts by weight of a shrinkage reducing agent, 0.1 to 1.5 parts by weight of a fiber reinforcement, 0.1 to 0.5 parts by weight of an admixture, and 30.0 to an aggregate It consists of 65.0 parts by weight, the binder uses cement, and the expansion material and anhydrous gypsum are used as the shrinkage reducing agent, but the expansion material is 0.2 to 1.5 parts by weight, and the anhydride gypsum (CaSO 4 ) is 0.3 to 1.0 parts by weight. Crack repair mortar is known.
또한, 한국등록특허 10-1763297(등록일자 2017년07월25일)에는 다음의 단계를 포함하는 콘크리트 구조물의 균열 예방 및 보수방법; (a) 콘크리트 구조물에 프라이머를 도포하는 단계; (b) 상기 프라이머가 도포된 콘크리트에 수용성 아크릴 탄성 도막제를 1차 도포하는 단계; (c) 상기 수용성 아크릴 탄성 도막제가 도포된 콘크리트에 보수용 시트를 부착하는 단계; 및 (d) 상기 보수용 시트가 부착된 콘크리트에 수용성 아크릴 탄성 도막제를 2차 도포하여 건조시키는 단계. 를 포함하는 콘크리트 구조물의 균열 예방 및 보수방법에 있어서, 상기 수용성 아크릴 탄성 도막제는 아크릴수지 20~60%, 탄산칼슘으로 석회암 10~30%, 점증제로 아크릭에멀젼 10~40%, 용제로 물 5~10%, 2-부톡시에탄올 1~5% 및 1,2-에탄올 1~5% 및 이산화티타늄 5~20%을 포함하며, 상기 수용성 아크릴 탄성 도막제는 5~35℃에서 지촉경화시간이 30~120분, 완전경화시간이 72시간 이내이며, 페이스트 크림타입(Paste cream type)의 도막제이고, 상기 수용성 아크릴 탄성 도막제는 콘크리트 구조물 1㎡당 0.5~2kg의 비율로 도포하며, 도막의 두께는 0.1~1mm 인 것을 특징으로 하는 균열 예방 및 보수방법이 공지되어 있다.In addition, Korean Patent Registration No. 10-1763297 (registration date July 25, 2017) includes a method for preventing and repairing cracks in concrete structures including the following steps; (a) applying a primer to the concrete structure; (b) first applying a water-soluble acrylic elastic coating agent to the concrete coated with the primer; (c) attaching a repair sheet to the concrete to which the water-soluble acrylic elastic coating agent is applied; And (d) applying a water-soluble acrylic elastic coating agent to the concrete to which the repair sheet is attached, and drying it. In the method for preventing and repairing cracks in a concrete structure including, the water-soluble acrylic elastic coating agent is acrylic resin 20-60%, calcium carbonate is limestone 10-30%, thickener is acrylic emulsion 10-40%, solvent is water 5 It contains ~10%, 2-butoxyethanol 1-5%, 1,2-ethanol 1-5%, and titanium dioxide 5-20%, and the water-soluble acrylic elastic coating agent has a touch curing time at 5~35℃. 30-120 minutes, complete curing time is less than 72 hours, paste cream type coating agent, and the water-soluble acrylic elastic coating agent is applied at a rate of 0.5-2kg per 1㎡ of concrete structure. Crack prevention and repair methods are known, characterized in that the thickness is 0.1 ~ 1mm.
또한, 한국등록특허 10-1914735(등록일자 2018년10월29일)에는 균열 억제형 시멘트 콘크리트 조성물로서, 결합재 5~30 중량%, 잔골재 30~70 중량%, 굵은골재 20~60 중량%, 물 1~30 중량% 및 성능 개질제 0.1~20 중량%을 포함하며, 상기 결합재는 결합재 중량에 대하여 보통 포틀랜드 시멘트 35~95 중량%, 고로슬래그 미분말 1~40중량%, 메타카올린 0.5~20 중량%, 규산백토 0.5~20 중량%, 에머리 분말 0.5~10 중량%, 소듐마그네슘실리케이트 0.5~10중량%, 초산비닐-비닐리덴 공중합체 0.5~10중량%, 발수제 0.5~10 중량%, 마그네슘설포알루미네이트 0.1~20중량%, 알킬렌 아마이드 0.01∼10 중량%, 및 감수제 0.1~10 중량%를 포함하고, 상기 성능 개질제는 성능 개질제 중량에 대하여 메틸아크릴레이트-메틸메타크릴레이트 공중합체 40~97 중량%, 스티렌-메틸메타크릴레이트 공중합체 0.5~20 중량%, 옥타데실트리메톡시실란 0.5~20중량%, 폴리올레핀 0.5~15중 량%, 폴리비닐포르말 0.5~15 중량%, 아크릴산-에스테르 공중합체 0.01~15중량%, 에틸렌-글리시딜메타크릴레이트 공중합체 0.01~15중량%, 폴리설폰 0.01~15중량% 및 소포제 0.01~10중량%를 포함하고, KS F 2402에 따른 슬럼프(mm)는 교반직후 19~20, 20분 경과후 17~18, 30분 경과후 15~16, 40분 경과후 13~14, 60분 경과후 8~12이고; KS F 2405에 따른 압축강도(N/mm2)는 3일 후 21.5~23.1, 7일 후 33.8~37.8, 14일 후 38.8~41.5, 28일 후 45.8~48.9이고; KS F 2408에 따른 휨강도(N/mm2)는 7일 후 4.8~5.2, 14일 후 5.2~5.7, 28 일 후 6.0~6.5이고; JIS A 1171에 따른 접착강도(N/mm2)는 2.0~2.3이고; KS F 2409에 따른 흡수율(%)은 0.9~1.2이고; KS F 2456에 따른 동결 융해 저항성 시험 결과 내구성 지수는 84~88이고; KS F 2424(콘크리트의 길이변화 시험방법)에 따른 건조수축율 측정 결과 길이변화율(%)은 0.01~0.04이고; KS F 4042에 따른 염화물이온침투저항성(Coulombs)은 498~550, 중성화 깊이(mm)는 0.5~0.8이고; ASTM C 779에 따른 마모저항성(mm)은 0.01~0.04이고; KS F 2561(철근 콘크리트용 방청제)에 따른 방청률(%)은 96~98인 것을 특징으로 하는 균열 억제형 시멘트 콘크리트 조성물이 공지되어 있다.In addition, Korean Patent Registration 10-1914735 (registration date October 29, 2018) is a crack suppression type cement concrete composition, which includes 5 to 30% by weight of binder, 30 to 70% by weight of fine aggregate, 20 to 60% by weight of coarse aggregate, and water. 1 to 30% by weight and 0.1 to 20% by weight of a performance modifier, and the binder is usually 35 to 95% by weight of Portland cement, 1 to 40% by weight of blast furnace slag fine powder, 0.5 to 20% by weight of metakaolin, Silicate clay 0.5-20 wt%, emery powder 0.5-10 wt%, sodium magnesium silicate 0.5-10 wt%, vinyl acetate-vinylidene copolymer 0.5-10 wt%, water repellent 0.5-10 wt%, magnesium sulfoaluminate 0.1 -20% by weight, 0.01-10% by weight of alkylene amide, and 0.1-10% by weight of a water reducing agent, and the performance modifier is 40-97% by weight of a methyl acrylate-methyl methacrylate copolymer based on the weight of the performance modifier, Styrene-methylmethacrylate copolymer 0.5 to 20% by weight, octadecyltrimethoxysilane 0.5 to 20% by weight, polyolefin 0.5 to 15% by weight, polyvinyl formal 0.5 to 15% by weight, acrylic acid-ester copolymer 0.01 -15% by weight, ethylene-glycidylmethacrylate copolymer 0.01-15% by weight, polysulfone 0.01-15% by weight, and 0.01-10% by weight of antifoaming agent, and the slump (mm) according to KS F 2402 is stirred 19-20 immediately after, 17-18 after 20 minutes, 15-16 after 30 minutes, 13-14 after 40 minutes, 8-12 after 60 minutes; The compressive strength (N/mm 2 ) according to KS F 2405 is 21.5-23.1 after 3 days, 33.8-37.8 after 7 days, 38.8-41.5 after 14 days, and 45.8-48.9 after 28 days; The flexural strength (N/mm 2 ) according to KS F 2408 is 4.8 to 5.2 after 7 days, 5.2 to 5.7 after 14 days, and 6.0 to 6.5 after 28 days; The adhesion strength (N/mm 2 ) according to JIS A 1171 is 2.0-2.3; The absorption rate (%) according to KS F 2409 is 0.9 to 1.2; As a result of the freeze-thaw resistance test according to KS F 2456, the durability index is 84-88; As a result of measuring the dry shrinkage rate according to KS F 2424 (Test Method for Length Change of Concrete), the length change rate (%) is 0.01 to 0.04; Chloride ion penetration resistance (Coulombs) according to KS F 4042 is 498-550, and the neutralization depth (mm) is 0.5-0.8; Abrasion resistance (mm) according to ASTM C 779 is 0.01 to 0.04; A crack inhibiting type cement concrete composition is known, characterized in that the rust prevention rate (%) according to KS F 2561 (corrosion inhibitor for reinforced concrete) is 96 to 98.
또한, 한국등록특허 10-1815928(등록일자 2018년01월02일)에는 분산용 무기필러 45~85중량%; 응집방지제 1~10중량%; 발수제 2~20중량%; 수축저감제 5~30중량%;를 포함하여 조성되는 조성물이 분쇄기에서 분쇄 혼합된 것으로, 비중이 2.20 이하이면서 분말도가 5,500~9,000cm2/g이며, 상기 분산용 무기필러는 플라이애시이고, 상기 응집방지제는 수산화마그네슘이며, 상기 발수제는 스테아린산과 왁스 에멜젼 중에서 하나 이상이고, 상기 수축저감제는 글리콜계인 발수형 수축저감 혼화재를 포함하는 결합재 조성물로서, 보통 포틀랜드 시멘트 30~80중량%; 초속경 시멘트 2~10중량%; 상기 발수형 수축저감 혼화재 2~8중량%; 팽창제 3~8중 량%; 무수석고 2~10중량%; 고로슬래그 미분말 5~40중량%; 알칼리 설페이트 0.3~3중량%;를 포함하여 조성되는 것을 특징으로 하는 내화학성 단면보수 모르타르용 결합재 조성물이 공지되어 있다.In addition, Korean Patent Registration No. 10-1815928 (registration date January 2, 2018) includes 45 to 85% by weight of inorganic filler for dispersion; 1-10% by weight of an anti-aggregation agent; 2 to 20% by weight of a water repellent; Shrinkage reducing agent 5 ~ 30% by weight; a composition comprising a pulverized and mixed in a grinder, the specific gravity is 2.20 or less and the powder is 5,500 ~ 9,000cm2 / g, the inorganic filler for dispersion is fly ash, the The anti-aggregation agent is magnesium hydroxide, the water repellent is at least one of stearic acid and a wax emulsion, and the shrinkage reducing agent is a binder composition comprising a glycol-based water repellent shrinkage reducing admixture, usually Portland cement 30 to 80% by weight; 2 to 10% by weight of ultra-fast cement; 2 to 8% by weight of the water-repellent shrinkage-reducing admixture; 3-8% by weight of the expanding agent; 2 to 10% by weight of anhydrite; 5 to 40% by weight of fine blast furnace slag powder; A binder composition for chemical-resistant cross-section repair mortar, characterized in that the composition comprises 0.3 to 3% by weight of alkali sulfate, is known.
그러나, 상기 특허들의 균열예방 또는 균열억제 모르타르 및 이를 이용한 시공방법들은 균열예방 조상물을 별도로 사용하여야 하고, 균열발생의 원인이 되는 수축을 저감시키기 위한 수축저감제를 동시에 사용함에 따라 결합재 모르타르의 혼합성분이 많아지는 문제점이 있었을 뿐만 아니라, 이러한 혼합성분 사용으로 인한 단면복구 및 보수 모르타르의 물성에도 영향을 미치고 이러한 단면복구 및 보수 모르타르를 사용한다 하더라도 완전한 수축 및 균열예방에는 한계가 있었다.However, the crack prevention or crack suppression mortar of the above patents and the construction methods using the same require the use of a crack prevention ancestor separately, and a shrinkage reducing agent to reduce the shrinkage that causes cracking is used at the same time, so that the binder mortar is mixed. In addition to the problem of increasing the number of components, it affects the physical properties of the cross-section restoration and repair mortar due to the use of these mixed ingredients, and even if such a cross-section restoration and repair mortar is used, there is a limit to complete shrinkage and crack prevention.
또한, 한국등록특허 10-1760230(등록일자 2017년07월14일)에는 기설 콘크리트 구조물(1)과, 수축저감 조강형 보수몰탈의 타설에 의해 형성되어 상기 기설 콘크리트 구조물(1)을 보수/보강하는 보강용 콘크리트 구조물(2)이 일체화되는 콘크리트 구조물에 있어서, 상기 수축저감 조강형 보수몰탈은, CSA계 시멘트 35 ~ 60 중량%, 규사 35 ~ 60 중량%, 분말수지 2 ~ 10 중량%, 섬유보강재 0.5 ~ 2.0 중량% 및 기능성 혼화제 0.5 ~ 5.0 중량%를 포함하고, 상기 기설 콘크리트 구조물(1)과 보강용 콘크리트 구조물(2)은 소정길이의 유동성 전단연결체(100)에 의해 일체 화되며, 상기 유동성 전단연결체(100)는, 내부는 관통되고, 전면에 소정 반경의 유동구(10a)가 형성되며, 상기 기설 콘크리트 구조물(1)에 매설되는 고정관(10); 상기 유동구(10a)를 관통하여 상기 고정관(10)의 전방에서 상하, 좌우 유동 가능하게 돌출되는 몸체(21)가 상기 보강용 콘크리트 구조물(2)에 매설되어 상기 보강용 콘크리트 구조물(2)의 수축에 따라 소정범위 유동되며, 상기 몸체(21)의 후단부에는 상기 고정관(10)의 내부에서 상기 유동구(10a)에 걸리는 걸림뭉치(22)가 형성되는 연결봉(20); 및 상기 고정관(10)의 내부에 삽입되어 상기 연결봉(20)을 지지하는 소정길이의 패킹부재(30);를 포함하는 것을 특징으로 하는 수축저감 조강형 보수몰탈과 유동성 전단연결체를 이용한 콘크리트 구조물이 공지되어 있다.In addition, Korean Patent Registration 10-1760230 (registration date July 14, 2017) is formed by pouring an existing concrete structure (1) and a shrinkage-reducing crude steel repair mortar to repair/reinforce the existing concrete structure (1). In the concrete structure in which the reinforcing concrete structure (2) is integrated, the shrinkage reduction crude steel repair mortar is 35 to 60% by weight of CSA-based cement, 35 to 60% by weight of silica sand, 2 to 10% by weight of powder resin, 0.5% by weight of fiber reinforcement. It contains ~ 2.0% by weight and 0.5 ~ 5.0% by weight of a functional admixture, and the existing concrete structure (1) and the reinforcing concrete structure (2) are integrated by a flowable shear connector 100 of a predetermined length, and the fluidity The shear connector 100 includes: a fixed pipe 10 which penetrates the inside, has a flow hole 10a having a predetermined radius in the front surface, and is buried in the existing concrete structure 1; A body 21 that penetrates through the flow port 10a and protrudes from the front of the fixing pipe 10 so as to move up and down and left and right is buried in the reinforcing concrete structure 2 to shrink the reinforcing concrete structure 2 A connecting rod 20 which flows in a predetermined range according to the body 21 and has a hook 22 formed therein at the rear end of the body 21 at the flow port 10a; And a packing member 30 having a predetermined length that is inserted into the fixing pipe 10 to support the connecting rod 20; a concrete structure using a shrinkage-reducing crude steel repair mortar and a flowable shear connector It is known.
그러나, 상기 수축저감 조강형 보수몰탈을 사용하는 경우에는 상기 수축저감 조강형 보수몰탈 외에도 콘크리트 구조물의 수축에 따라 소정범위 유동되는 열결봉 및 패킹부재를 별도로 사용하여야 하는 문제점이 있었다.However, when the shrinkage-reducing crude steel repair mortar is used, in addition to the shrinkage-reducing crude steel repair mortar, there is a problem in that a heat sealing rod and a packing member that flows in a predetermined range according to the contraction of the concrete structure must be separately used.
이에 따라 본 발명자는 별도의 수축저감제 또는 균열방지제를 사용하지 않고도 콘크리트 구조물 단면보수시 균열 저항성 및 수축 저항성을 가지는 단면보수 모르타르 조성물 및 이를 이용한 콘크리트 구조물 단면보수 시공공법을 개발하고 본 발명을 완성하게 되었다.Accordingly, the present inventors developed a section repair mortar composition having crack resistance and shrinkage resistance when repairing a concrete structure section without using a separate shrinkage reducing agent or a crack inhibitor, and a concrete structure section repair construction method using the same, and complete the present invention. Became.
본 발명은 상기 종래 문제점들을 해결하기 위하여, 별도의 수축저감제 또는 균열방지제를 사용하지 않고도 콘크리트 구조물 단면보수시 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물을 제공함과 동시에 이를 이용하여 콘크리트 구조물 단면을 보수하는 시공공법을 제공하는 것을 해결하고자 하는 과제로 한다.In order to solve the above problems, the present invention provides a mortar composition having crack resistance and shrinkage resistance when repairing a concrete structure section without the use of a separate shrinkage reducing agent or a crack inhibitor. The task to be solved is to provide a construction method.
본 발명은 상기 과제를 해결하기 위하여, 잔골재 60~80중량부, 포틀랜드 1종 시멘트 20∼25중량부, 알루미나 시멘트 5∼10중량부, 석고 5~10중량부, 칼슘설포알루미네이트 5~10중량부, 액상알칼리금속실리케이트 5~10중량부, 활성실리카 5~10 중량부, 윤활증점제 1~2중량부, 고성능 유동화제 0.3~0.7중량부, AE제 0.3~0.5중량부 및 배합수를 포함하여 조성되는 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물을 과제의 해결수단으로 한다.In order to solve the above problems, the present invention is 60 to 80 parts by weight of fine aggregate, 20 to 25 parts by weight of Portland type 1 cement, 5 to 10 parts by weight of alumina cement, 5 to 10 parts by weight of gypsum, 5 to 10 parts by weight of calcium sulfoaluminate Parts, liquid alkali metal silicate 5 to 10 parts by weight, active silica 5 to 10 parts by weight, lubricant thickener 1 to 2 parts by weight, high performance fluidizing agent 0.3 to 0.7 parts by weight, AE agent 0.3 to 0.5 parts by weight, and water A mortar composition having crack resistance and shrinkage resistance to be formed is used as a solution to the problem.
상기 액상알칼리금속실리케이트는 액상소듐실리케이트, 액상포타슘실리케이트, 액상리튬실리케이트로부터 1종 이상 선택되는 것을 과제의 해결수단으로 한다.The liquid alkali metal silicate is one or more selected from liquid sodium silicate, liquid potassium silicate, and liquid lithium silicate as a means of solving the problem.
상기 윤활 증점제는 Poly Ethylene Oxide(PEO) 70중량% 및 Starch(전분) 30중량% 혼합한 것을 과제의 해결수단으로 한다.The lubricant thickener is a solution of the problem by mixing 70% by weight of Poly Ethylene Oxide (PEO) and 30% by weight of Starch (starch).
상기 윤활 증점제는 카르복시메틸 셀룰로오스(carboxymethyl cellulose)와 옥수수 전분을 3 : 1의 중량비로 혼합한 것을 과제의 해결수단으로 한다. The lubricating thickener is a solution of the problem by mixing carboxymethyl cellulose and corn starch in a weight ratio of 3: 1.
상기 윤활 증점제는 미역가공 중에 발생하는 미역찌꺼기를 알칼리 추출하고, 산을 첨가하여 생성된 젤을 수산화나트륨에 용해하여 나트륨염으로 하고 건조시켜 분말화한 알긴산나트륨분말인 것을 과제의 해결수단으로 한다.The lubricant thickener is a sodium alginate powder obtained by alkali extraction of seaweed residues generated during the processing of seaweed, dissolving the resulting gel in sodium hydroxide and drying the resulting gel in sodium hydroxide, drying, and powdering the seaweed residue generated during the seaweed processing.
또한, 본 발명은, 콘크리트 구조물의 단면보수공법에 있어서, 단면보수 대상 콘크리트 구조물의 열화된 부분을 치핑하는 단계와; 상기 치핑하는 단계 후 콘크리트 구조물의 단면보수 부위를 세정하는 단계와; 상기 세정하는 단계 후, 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물을 도포하는 단계;를 포함하는 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물을 이용한 콘크리트 구조물 단면보수공법을 과제의 해결수단으로 한다.In addition, the present invention, in the section repair method of the concrete structure, the step of chipping the deteriorated portion of the concrete structure to be repaired section; Cleaning the section repair portion of the concrete structure after the chipping step; After the washing step, applying a mortar composition having crack resistance and shrinkage resistance; a concrete structure section repair method using a mortar composition having crack resistance and shrinkage resistance, including, as a solution to the problem.
상기 열화된 부분을 치핑하는 단계에서는 이중노즐에 의한 물분사에 의해 치핑하되, 외부 노즐은 물안개를 분사하여 비산먼지를 저감하고 중앙 노즐은 고압수를 분사하여 열화 부위를 치핑하는 것을 과제의 해결수단으로 한다.In the step of chipping the deteriorated part, the deteriorated part is chipped by water spray by a double nozzle, but the external nozzle sprays water mist to reduce scattering dust, and the central nozzle sprays high-pressure water to chip the deteriorated part. It is done.
본 발명의 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물 및 이를 이용한 콘크리트 구조물 단면보수공법은 별도의 수축저감제 또는 균열방지제를 사용하지 않고도 콘크리트 구조물 단면보수시 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물을 제공함과 동시에 이를 이용하여 콘크리트 단면보수면의 보호를 극대화할 수 있는 우수한 효과가 있다.The mortar composition having crack resistance and shrinkage resistance of the present invention and the concrete structure section repair method using the same provides a mortar composition having crack resistance and shrinkage resistance when repairing the section of a concrete structure without using a separate shrinkage reducing agent or crack inhibitor. At the same time, there is an excellent effect of maximizing the protection of the concrete section repair surface by using this.
본 발명은, 잔골재 60~80중량부, 포틀랜드 1종 시멘트 20∼25중량부, 알루미나 시멘트 5∼10중량부, 석고 5~10중량부, 칼슘설포알루미네이트 5~10중량부, 액상알칼리금속실리케이트 5~10중량부, 활성실리카 5~10 중량부, 윤활증점제 1~2중량부, 고성능 유동화제 0.3~0.7중량부, AE제 0.3~0.5중량부 및 배합수를 포함하여 조성되는 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물을 기술구성의 특징으로 한다.The present invention provides 60 to 80 parts by weight of fine aggregate, 20 to 25 parts by weight of Portland type 1 cement, 5 to 10 parts by weight of alumina cement, 5 to 10 parts by weight of gypsum, 5 to 10 parts by weight of calcium sulfoaluminate, liquid alkali metal silicate Crack resistance and shrinkage formed including 5 to 10 parts by weight, 5 to 10 parts by weight of activated silica, 1 to 2 parts by weight of a lubricant thickener, 0.3 to 0.7 parts by weight of a high-performance fluidizing agent, 0.3 to 0.5 parts by weight of an AE agent, and a blending water The mortar composition having resistance is characterized by the technical construction.
상기 액상알칼리금속실리케이트는 액상소듐실리케이트, 액상포타슘실리케이트, 액상리튬실리케이트로부터 1종 이상 선택되는 것을 기술구성의 특징으로 한다.The technical configuration is characterized in that the liquid alkali metal silicate is one or more selected from liquid sodium silicate, liquid potassium silicate, and liquid lithium silicate.
상기 윤활 증점제는 Poly Ethylene Oxide(PEO) 70중량% 및 Starch(전분) 30중량% 혼합한 것을 기술구성의 특징으로 한다.The lubricant thickener is characterized by a mixture of 70% by weight of Poly Ethylene Oxide (PEO) and 30% by weight of Starch (starch).
상기 윤활 증점제는 카르복시메틸 셀룰로오스(carboxymethyl cellulose)와 옥수수 전분을 3 : 1의 중량비로 혼합한 것을 기술구성의 특징으로 한다. The lubricating thickener is characterized by the technical composition of a mixture of carboxymethyl cellulose and corn starch in a weight ratio of 3: 1.
상기 윤활 증점제는 미역가공 중에 발생하는 미역찌꺼기를 알칼리 추출하고, 산을 첨가하여 생성된 젤을 수산화나트륨에 용해하여 나트륨염으로 하고 건조시켜 분말화한 알긴산나트륨분말인 것을 기술구성의 특징으로 한다.The lubricating thickener is characterized in that it is a sodium alginate powder obtained by alkali extraction of seaweed residues generated during the processing of seaweed, and dissolving the gel produced by adding an acid in sodium hydroxide to form a sodium salt and drying to powder.
또한, 본 발명은, 콘크리트 구조물의 단면보수공법에 있어서, 단면보수 대상 콘크리트 구조물의 열화된 부분을 치핑하는 단계와; 상기 치핑하는 단계 후 콘크리트 구조물의 단면보수 부위를 세정하는 단계와; 상기 세정하는 단계 후, 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물을 도포하는 단계;를 포함하는 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물을 이용한 콘크리트 구조물 단면보수공법을 기술구성의 특징으로 한다.In addition, the present invention, in the section repair method of the concrete structure, the step of chipping the deteriorated portion of the concrete structure to be repaired section; Cleaning the section repair portion of the concrete structure after the chipping step; After the washing step, applying a mortar composition having crack resistance and shrinkage resistance; a concrete structure section repair method using a mortar composition having crack resistance and shrinkage resistance, including.
상기 열화된 부분을 치핑하는 단계에서는 이중노즐에 의한 물분사에 의해 치핑하되, 외부 노즐은 물안개를 분사하여 비산먼지를 저감하고 중앙 노즐은 고압수를 분사하여 열화 부위를 치핑하는 것을 기술구성의 특징으로 한다.In the step of chipping the deteriorated part, the deteriorated part is chipped by spraying water by a double nozzle, but the outer nozzle sprays water mist to reduce scattering dust, and the central nozzle sprays high-pressure water to chip the deteriorated part. It is done.
이하에서는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 본 발명의 실시예 및 도면을 통하여 상세히 설명한다. 그러나 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며, 여기에서 설명하는 실시예 및 도면에 한정되지 않는다.Hereinafter, embodiments of the present invention and drawings will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in various different forms, and is not limited to the embodiments and drawings described herein.
먼저, 본 발명의 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물은 잔골재 60~80중량부, 포틀랜드 1종 시멘트 20∼25중량부, 알루미나 시멘트 5∼10중량부, 석고 5~10중량부, 칼슘설포알루미네이트 5~10중량부, 액상알칼리금속실리케이트 5~10중량부, 활성실리카 5~10 중량부, 윤활증점제 1~2중량부, 고성능 유동화제 0.3~0.7중량부, AE제 0.3~0.5중량부 및 배합수를 포함하여 조성된다.First, the mortar composition having crack resistance and shrinkage resistance of the present invention is 60 to 80 parts by weight of fine aggregate, 20 to 25 parts by weight of Portland type 1 cement, 5 to 10 parts by weight of alumina cement, 5 to 10 parts by weight of gypsum, calcium sulfoaluminum 5 to 10 parts by weight of nate, 5 to 10 parts by weight of liquid alkali metal silicate, 5 to 10 parts by weight of activated silica, 1 to 2 parts by weight of lubricant thickener, 0.3 to 0.7 parts by weight of high performance fluidizing agent, 0.3 to 0.5 parts by weight of AE agent, and It is formulated including water.
여기서, 상기 알루미나 시멘트는 알루민산칼슘을 주성분으로 한 특수시멘트로, 조강성, 화학저항성 및 내화성을 부여한다. 또한, 상기 알루미나 시멘트는 초기 팽창을 부여하고 건조수축을 줄일 수 있는 역할을 수행을 위하여, 산화알루미늄이 30∼40wt% 의 것을 사용하는 것이 바람직하며, 5~10중량부 사용하는 것이 바람직하다.Here, the alumina cement is a special cement containing calcium aluminate as a main component, and imparts coarse stiffness, chemical resistance, and fire resistance. In addition, the alumina cement is preferably used in an amount of 30 to 40 wt% aluminum oxide, and preferably 5 to 10 parts by weight, in order to perform a role of imparting initial expansion and reducing drying shrinkage.
또한, 상기 석고(CaSO4)는 알루미나시멘트와 초기에 수화반응(Reaction of Hydration)에 의해 에트린자이트(Ettringite ; 3CaOAl2O·33CaSO4·32H2O)를 생성하여 초기강도를 확보하고, 수화반응의 속도를 조절하여 작업성을 개선하는 역할을 하는 것으로 5~10중량부 사용하는 것이 바람직하다.In addition, the gypsum (CaSO4) generates ethringite (3CaOAl 2 O·33CaSO 4 ·32H 2 O) by alumina cement and initial hydration reaction (Reaction of Hydration) to secure initial strength and hydration. It is preferable to use 5 to 10 parts by weight as it serves to improve workability by controlling the speed of the reaction.
또한, 상기 칼슘설포알루미네이트(Calcium Sulfoaluminate, CSA)는 수화반응성을 증가시키고 균열억제를 위해 첨가하는 무기계 속경성 광물재료로서, 물과 접촉할 때 순식간에 물과 반응하여 에트린자이트(Ettringite) 수화물을 생성함으로써, 알루미나 시멘트와 혼합할 때, 단시간 내에 우수한 압축강도를 얻을 수 있게 한다. In addition, the calcium sulfoaluminate (CSA) is an inorganic fast-setting mineral material that is added to increase hydration reactivity and inhibit cracking. When it comes into contact with water, it reacts with water in an instant and thus ethringite By producing a hydrate, it makes it possible to obtain excellent compressive strength within a short time when mixed with alumina cement.
특히, 단위 시멘트량이 높은 모르타르의 배합은 자기수축 및 건조수축이 발생할 우려가 크기 때문에 양생시 수분증발의 억제와 수축저감이 필요하고, 이를 위하여 현장조건에 따라 양생은 습윤양생 및 피막양생(양생제)등을 하고 있으나, 대부분이 기건상태에서 양생을 하기 때문에 수분증발에 따른 수축균열이 발생하게 된다.In particular, since the mortar with a high unit cement amount is highly susceptible to self-shrinkage and drying shrinkage, it is necessary to suppress moisture evaporation and reduce shrinkage during curing. ), but most of them are cured in an air-dry condition, resulting in shrinkage cracks due to evaporation of moisture.
따라서, 상기 칼슘설포알루미네이트(Calcium Sulfoaluminate, CSA)를 사용하게 되면 타설 후 수축되는 것을 보상할 수 있고, 또한 수축으로 인한 균열을 막을 수 있으므로 이를 위해 상기 상기 칼슘설포알루미네이트(Calcium Sulfoaluminate, CSA)는 5~10중량부 사용하는 것이 바람직하다.Therefore, if the calcium sulfoaluminate (CSA) is used, it is possible to compensate for shrinkage after pouring, and also to prevent cracks due to shrinkage. For this purpose, the calcium sulfoaluminate (CSA) It is preferable to use 5 to 10 parts by weight.
또한, 상기 액상알칼리금속실리케이트는 액상소듐실리케이트, 액상포타슘실리케이트, 액상리튬실리케이트로부터 1종 이상 선택되는 것이 바람직한데, 상기 액상알칼리금속실리케이트는 콘크리트 구조물 중의 수산화칼슘과 화학적으로 반응하여 콘크리트 공극 내에 불용성의 칼슘실리케이트수화물(calcium silicate hydrate, C-S-H)을 생성시켜 콘크리트와 일체화되며 그 결과 콘크리트의 표층 밀도와 강도, 내화학성이 향상된다.In addition, the liquid alkali metal silicate is preferably one or more selected from liquid sodium silicate, liquid potassium silicate, and liquid lithium silicate. It is integrated with concrete by generating silicate hydrate (CSH), and as a result, the surface density, strength, and chemical resistance of concrete are improved.
즉, 콘크리트 공극 내에 추가 생성된 C-S-H는 콘크리트 표층의 밀도를 향상시켜서, 콘크리트 표면의 강도, 내마모성, 내흡수성 등이 상승하게 되며, 콘크리트 표면의 수산화칼슘 성분이 이미 실리케이트와 반응하여 화학적으로 안정화되었기 때문에, 수분이나 공기 중의 CO2 가스, 산성 공해물질과 접촉하여도 반응하지 않게 됨으로써 화학적으로 안정화되므로 콘크리트는 내구성이 향상되고 수명이 연장되는 효과를 나타내게 되며, 이때, 상기 액상알칼리금속실리케이트는 5~10중량부 사용하는 것이 바람직하다.That is, CSH additionally generated in the concrete voids improves the density of the concrete surface layer, thereby increasing the strength, abrasion resistance, and water absorption resistance of the concrete surface, and because the calcium hydroxide component of the concrete surface has already reacted with silicate and is chemically stabilized, Since it does not react even when it comes into contact with moisture, CO2 gas in the air, or acidic pollutants, it is chemically stabilized, so that the durability of the concrete is improved and the lifespan is extended.At this time, the liquid alkali metal silicate is 5 to 10 parts by weight. It is preferable to use.
또한, 상기 활성실리카는 시멘트와 혼합되어 포졸란 반응으로 모르타르의 내부 공극을 충진하며 시간 경과에 따라 모르타르의 건조수축에 의한 균열을 저감하는 역할을 한다.In addition, the activated silica is mixed with cement to fill the interior pores of the mortar through a pozzolanic reaction, and serves to reduce cracking due to drying shrinkage of the mortar over time.
즉, 시멘트 중의 규산석회는 물과 반응하여 수산화석회가 되지만, 수산화석회는 활성실리카와 반응하여 안정성을 더하므로 화학적 작용에 대한 저항, 수밀성, 장기강도가 뛰어나게 하며, 지속적으로 시멘트 수화반응에 참여하여 초기 경화시 생성된 가용성 수산화칼슘을 불용성 칼슘실리케이트 수화물로 전환하게 되므로 모르타르의 내부 공극을 충진하며 시간 경과에 따라 모르타르의 건조수축에 의한 균열을 저감하는 역할을 한다.In other words, the silicate lime in cement reacts with water to become hydroxylime, but the hydroxide lime reacts with activated silica to add stability, so it has excellent resistance to chemical action, watertightness, and long-term strength, and continuously participates in the cement hydration reaction. Since soluble calcium hydroxide generated during initial hardening is converted into insoluble calcium silicate hydrate, it fills the internal voids of the mortar and plays a role in reducing cracking due to drying shrinkage of the mortar over time.
이때, 상기 활성실리카는 입도 200,000 ㎠/g의 미세입자를 지는 것이 바람직하고 본 발명에서 5~10중량부 사용하는 것이 바람직하다.At this time, the activated silica preferably has fine particles having a particle size of 200,000 ㎠/g, and it is preferable to use 5 to 10 parts by weight in the present invention.
한편, 상기 윤활 증점제는 Poly Ethylene Oxide(PEO) 70중량% 및 Starch(전분) 30중량% 혼합한 것을 사용하는 것이 바람직한데, 상기 PEO는 윤활 효과는 높으나 처짐기능이 매우 취약하여 이를 보완해주는 Starch를 30중량% 첨가하여 사용하는 것이 바람직하다.On the other hand, it is preferable to use a mixture of 70% by weight of Poly Ethylene Oxide (PEO) and 30% by weight of Starch (starch) as the lubricant thickener. It is preferable to use by adding 30% by weight.
이때, 상기 윤활 증점제가 1중량부 미만인 경우 윤활성, 특히 기계뿜칠 성능이 떨어지고, 2중량부 초과 사용하면 오히려 증점이 많이 되어 작업시에 골고루 펼쳐지는 미장 성능에 문제가 발생할 수 있다.At this time, if the lubricating thickener is less than 1 part by weight, lubricity, in particular, mechanical spraying performance is deteriorated, and if it is used in excess of 2 parts by weight, it becomes rather thick and may cause problems in the plastering performance evenly spread during work.
선택적으로, 상기 윤활 증점제는 카르복시메틸 셀룰로오스(carboxymethyl cellulose)와 옥수수 전분을 3 : 1의 중량비로 혼합한 것을 사용할 수도 있다.Optionally, the lubricant thickener may be a mixture of carboxymethyl cellulose and corn starch in a weight ratio of 3: 1.
또한, 선택적으로, 미역가공 중에 발생하는 미역찌꺼기를 알칼리 추출하고, 산을 첨가하여 생성된 젤을 수산화나트륨에 용해하여 나트륨염으로 하고 건조시켜 분말화한 알긴산나트륨분말을 사용할 수도 있다.Alternatively, sodium alginate powder obtained by alkali extraction of seaweed debris generated during the processing of seaweed, and dissolving the resulting gel in sodium hydroxide to obtain a sodium salt and drying to powdered seaweed residue may be used.
즉, 미역에는 철분, 칼슘과 아이오딘 함유량이 많아 신진대사를 촉진시키는 작용이 있는 알긴산이 포함되어 있어 미끌미끌하다. 상기 알긴산(alginate)은 해초산을 말하며 알긴과 알진(algin)이라고도 명명한다. 다시마 등의 갈조류(brown algae, 褐藻類) 세포벽에 분포하는 친수성 점질다당류(mucopolysaccharide, 粘質多糖)로 물과 결합하면 점성 분비물인 검(gum)을 형성한다. 일반적으로 알긴산나트륨과 알긴산칼슘 등의 알긴산염(alginate)의 형태로 존재하며, 긴 사슬 구조로(C6H8O6)n의 분자식을 가지며 약산성을 띤다In other words, seaweed contains alginic acid, which has a high content of iron, calcium and iodine, which promotes metabolism, making it slippery. The alginate refers to seaweed acid and is also referred to as algin and algin. It is a hydrophilic mucopolysaccharide (mucopolysaccharide, 粘質多糖) distributed in the cell wall of brown algae such as kelp. When combined with water, it forms a viscous secretion, gum. In general, it exists in the form of alginate such as sodium alginate and calcium alginate, and has a molecular formula of n with a long chain structure (C 6 H 8 O 6) and has weak acidity.
상기와 같은 미역을 가공하는 중에 발생하는 미역찌꺼기를 알칼리 추출하고, 산을 첨가하여 생성된 젤을 수산화나트륨에 용해하여 나트륨염으로 하고 건조시켜 분말화한 알긴산나트륨분말을 윤활증점제로 사용한다.The seaweed residue generated during the processing of seaweed as described above is extracted with alkali, and the gel produced by adding acid is dissolved in sodium hydroxide to form a sodium salt, and then dried and powdered sodium alginate powder is used as a lubricant thickening agent.
또한, 본 발명의 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물에서 수화반응을 위해 필요한 단위수량은 물-시멘트비가 15~25%이지만, 일반적으로 물-시멘트비를 55~60%로 유지하는 이유는 유동성을 확보해야 하기 때문이다. 그러나, 본 발명의 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물을 제조하기 위해서는 물-바인더비를 40%로 낮추는 것이 필요하고, 이를 위하여 고성능 유동화제를 같이 사용한다. In addition, in the mortar composition having crack resistance and shrinkage resistance of the present invention, the water-cement ratio is 15-25%, but the water-cement ratio is generally maintained at 55-60%. Because it must be secured. However, in order to prepare the mortar composition having crack resistance and shrinkage resistance of the present invention, it is necessary to lower the water-binder ratio to 40%, and for this purpose, a high-performance fluidizing agent is used together.
즉, 상기 고성능 유동화제는 단면복구용 모르타르의 유동성 확보를 위해 0.3~0.7중량부로 혼합되는 것이 바람직하고, 본 발명에서는 폴리카본산계를 사용하는 것이 가장 우수한 효과를 나타낸다. 상기 폴리카본산계를 사용하는 이유는 시간의 흐름에 따라 유동성을 읽어버리는 슬럼프 로스 현상이 발생하게 되는데, 종래의 나프타렌 계열은 시간에 따라 슬럼프 로스 현상이 커지게 되어 콘크리트 배합 후 슬럼프의 변화게 크게 나타나는 문제가 있지만, 폴리카본산계를 사용하게 되면 슬럼프 로스 현상을 줄일 수 있고 콘크리트 배합 후에 숏크리트 작업까지 작업성을 확보할 수 있는 장점이 있다.That is, the high-performance fluidizing agent is preferably mixed in an amount of 0.3 to 0.7 parts by weight in order to secure the fluidity of the mortar for cross-section restoration, and in the present invention, the use of a polycarboxylic acid system exhibits the best effect. The reason for using the polycarboxylic acid is that the slump loss phenomenon that reads the fluidity over time occurs.In the conventional naphthaene series, the slump loss phenomenon increases with time, so the change of slump after concrete mixing is large. Although there is a problem that appears, the use of polycarboxylic acid has the advantage of reducing the slump loss phenomenon and securing workability from concrete mixing to shotcrete work.
상기 AE제(공기연행제)는 본 발명의 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물에 초기 과다공기량이 확보되어 공기들이 베어링 역할을 함에 따라 유동성이 증가하게 되고, 모르타르 조성물의 타설과 동시에 타설면에 모르타르가 붙으면 공기량이 급감소하게 되어 유동성이 감소함에 따라 흘러내리는 항복치의 증대로 붙임성능이 증대된다. 또한 타설시 리바운드율이 감소하게 되는 효과도 갖게 되며, 0.3~0.5중량부로 혼합되는 것이 바람직하다.The AE agent (air entraining agent) secures an initial amount of excess air in the mortar composition having crack resistance and shrinkage resistance of the present invention, so that the flowability increases as the air serves as a bearing, and at the same time as the mortar composition is placed, If the mortar is attached, the amount of air decreases rapidly, and as the fluidity decreases, the yield value that flows down increases, thereby increasing the adhesion performance. In addition, it also has the effect of reducing the rebound rate during pouring, it is preferably mixed in 0.3 to 0.5 parts by weight.
한편, 본 발명은, 콘크리트 구조물의 단면보수공법에 있어서, 단면보수 대상 콘크리트 구조물의 열화된 부분을 치핑하는 단계와; 상기 치핑하는 단계 후 콘크리트 구조물의 단면보수 부위를 세정하는 단계와; 상기 세정하는 단계 후, 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물을 도포하는 단계;를 포함하는 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물을 이용한 콘크리트 구조물 단면보수공법을 특징적인 구성으로 한다.On the other hand, the present invention, in the section repair method of a concrete structure, the step of chipping the deteriorated portion of the concrete structure to be repaired section; Cleaning the section repair portion of the concrete structure after the chipping step; After the washing step, applying a mortar composition having crack resistance and shrinkage resistance; a concrete structure section repair method using a mortar composition having crack resistance and shrinkage resistance, including.
이때, 상기 열화된 부분을 치핑하는 단계에서는 이중노즐에 의한 물분사에 의해 치핑하되, 외부 노즐은 물안개를 분사하여 비산먼지를 저감하고 중앙 노즐은 고압수를 분사하여 열화 부위를 치핑하는 것이 바람직하며, 미세먼지저감되는 우수한 효과가 있게 된다.At this time, in the step of chipping the deteriorated part, it is preferable to chip the deteriorated part by spraying water by a double nozzle, but the outer nozzle sprays water mist to reduce scattering dust, and the central nozzle sprays high-pressure water to chip the deteriorated part. , There is an excellent effect of reducing fine dust.
[본 발명의 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물의 제조][Preparation of mortar composition having crack resistance and shrinkage resistance of the present invention]
잔골재 80중량부, 포틀랜드 1종 시멘트 25중량부, 알루미나 시멘트 10중량부, 석고 10중량부, 칼슘설포알루미네이트 10중량부, 액상알칼리금속실리케이트 10중량부, 활성실리카 10 중량부, 윤활증점제 2중량부, 고성능 유동화제 0.7중량부, AE제 0.5중량부 및 배합수를 혼합하고 점도조절하여 본 발명의 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물을 제조하였다.80 parts by weight of fine aggregate, 25 parts by weight of Portland type 1 cement, 10 parts by weight of alumina cement, 10 parts by weight of gypsum, 10 parts by weight of calcium sulfoaluminate, 10 parts by weight of liquid alkali metal silicate, 10 parts by weight of activated silica, 2 parts by weight of lubricant thickener Part, 0.7 parts by weight of a high-performance fluidizing agent, 0.5 parts by weight of an AE agent, and a blending water were mixed and viscosity adjusted to prepare a mortar composition having crack resistance and shrinkage resistance of the present invention.
[본 발명의 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물 물성시험][The physical property test of the mortar composition having crack resistance and shrinkage resistance of the present invention]
상기 [실시예 1]에서 제조한 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물을 이용하여 시편을 제작하고, 그 시편에 관한 압축강도, 부착강도, 휨강도, 길이변화율 및 균열성 등의 시험을 진행하였다. 시험은 KS 시험방법에 따랐으며, 그에 관한 시험결과를 [표 1]에 정리하였다. A specimen was prepared using the mortar composition having crack resistance and shrinkage resistance prepared in [Example 1], and tests such as compressive strength, adhesion strength, flexural strength, length change rate, and cracking property were performed on the specimen. The test followed the KS test method, and the test results related thereto are summarized in [Table 1].
상기 [표 1]에서 확인된 바와 같이, 압축강도, 부착강도, 휨강도는 KS F 4042 시험 방법 규정에 따라 측정하고, 길이변화율(수축성)은 KS F 2424, 균열성은 KS F 4937 시험 방법 규정에 따라 측정한 결과 각각 규격에 만족할 만한 시험 결과를 얻을 수 있었다. As confirmed in [Table 1] above, compressive strength, adhesion strength, and flexural strength are measured according to the KS F 4042 test method regulations, the length change rate (shrinkability) is KS F 2424, and the crackability is according to the KS F 4937 test method regulations. As a result of the measurement, a test result satisfactory for each standard was obtained.
이상의 설명은 본 발명의 기술사상을 예시적으로 설명한 것에 불과한 것으로서, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면 본 발명의 본질적인 특성에서 벗어나지 않는 범위에서 다양한 수정 및 변형이 가능할 것이다. 따라서, 본 발명에 개시된 도면들은 본 발명의 기술 사상을 한정하기 위한 것이 아니라 설명하기 위한 것이고, 이러한 도면에 의하여 본 발명의 기술 사상의 범위가 한정되는 것은 아니다. 본 발명의 보호 범위는 아래의 청구범위에 의하여 해석되어야 하며, 그와 동등한 범위 내에 있는 모든 기술 사상은 본 발명의 권리범위에 포함되는 것으로 해석되어야 할 것이다.The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the drawings disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these drawings. The scope of protection of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.
Claims (7)
상기 윤활 증점제는 Poly Ethylene Oxide(PEO) 70중량% 및 Starch(전분) 30중량% 혼합한 것, 카르복시메틸 셀룰로오스(carboxymethyl cellulose)와 옥수수 전분을 3 : 1의 중량비로 혼합한 것 또는 미역가공 중에 발생하는 미역찌꺼기를 알칼리 추출하고, 산을 첨가하여 생성된 젤을 수산화나트륨에 용해하여 나트륨염으로 하고 건조시켜 분말화한 알긴산나트륨분말인 것으로부터 선택되는 것을 특징으로 하는 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물
60 to 80 parts by weight of fine aggregate, 20 to 25 parts by weight of Portland type 1 cement, 5 to 10 parts by weight of alumina cement, 5 to 10 parts by weight of gypsum, 5 to 10 parts by weight of calcium sulfoaluminate, 5 to 10 parts by weight of liquid sodium silicate , 5 to 10 parts by weight of activated silica, 1 to 2 parts by weight of a lubricant thickener, 0.3 to 0.7 parts by weight of a polycarboxylic acid-based high-performance fluidizing agent, 0.3 to 0.5 parts by weight of an AE agent, and a water-binder ratio of 40% by weight Is composed of,
The lubricant thickener is a mixture of 70% by weight of Poly Ethylene Oxide (PEO) and 30% by weight of Starch (starch), a mixture of carboxymethyl cellulose and corn starch in a weight ratio of 3: 1, or occurs during seaweed processing. A mortar having crack resistance and shrinkage resistance, characterized in that it is selected from sodium alginate powder obtained by alkali extraction of seaweed residues, dissolving the resulting gel in sodium hydroxide and drying and pulverizing the resulting gel in sodium hydroxide. Composition
상기 열화된 부분을 치핑하는 단계에서는 이중노즐에 의한 물분사에 의해 치핑하되, 외부 노즐은 물안개를 분사하여 비산먼지를 저감하고 중앙 노즐은 고압수를 분사하여 열화 부위를 치핑하는 것을 특징으로 하는 균열 저항성 및 수축 저항성을 갖는 모르타르 조성물을 이용한 콘크리트 구조물 단면보수공법
A method of repairing a section of a concrete structure, comprising: chipping a deteriorated portion of a concrete structure to be repaired; Cleaning the section repair portion of the concrete structure after the chipping step; After the washing step, applying a mortar composition having crack resistance and shrinkage resistance according to claim 1; Including,
In the step of chipping the deteriorated part, the chipping is performed by water spraying by a double nozzle, but the outer nozzle sprays water mist to reduce scattering dust, and the central nozzle sprays high-pressure water to chip the deteriorated part. Concrete structure section repair method using mortar composition having resistance and shrinkage resistance
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020200095201A KR102224215B1 (en) | 2020-07-30 | 2020-07-30 | Non-shirinkage mortar composition with crack resistance and the concrete structure section restoration method using thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020200095201A KR102224215B1 (en) | 2020-07-30 | 2020-07-30 | Non-shirinkage mortar composition with crack resistance and the concrete structure section restoration method using thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR102224215B1 true KR102224215B1 (en) | 2021-03-09 |
Family
ID=75179559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020200095201A KR102224215B1 (en) | 2020-07-30 | 2020-07-30 | Non-shirinkage mortar composition with crack resistance and the concrete structure section restoration method using thereof |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR102224215B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102547185B1 (en) | 2022-12-15 | 2023-06-26 | 주식회사 에스알티엔씨 | Concrete repair mortar composition with crack resistance and salt damage resistance and concrete repairing method using thereof |
| KR102569083B1 (en) * | 2023-03-28 | 2023-08-24 | 주식회사 모노화학 | A coating composition for preventing neutralization and aging of concrete structures, and a method of repairing cracks on the outer wall of concrete structures and preventing neutralization using the same |
| KR102603918B1 (en) | 2022-12-22 | 2023-11-22 | 주식회사 동명테크피아 | Concrete repairing and reinforcing mortar composition comprising surface modified nano calciumcarbonate ultra fine powder and concrete repairing and reinforcing method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110022776A (en) * | 2009-08-28 | 2011-03-08 | 이정배 | A composition of reinforcement mortar having quick-hardening and lightweight |
| KR20120021462A (en) * | 2010-08-02 | 2012-03-09 | (주)안풍건설 | Non-cracking repair mortar containing hybrid fibers and method for repairing concrete structures using non-cracking repair mortar |
| KR101681596B1 (en) * | 2016-02-04 | 2016-12-01 | 주식회사 에코이앤씨 | Mortar composition of improving chemical resistance and durability for repairing and reinforcing concrete structures , and method of repairing and reinforcing concrete structures using the same |
| KR101760230B1 (en) | 2017-01-11 | 2017-07-20 | 김선영 | Reinforcement concrete structure and methods for repairing concrete structure using low contraction―high early strength type repairing mortar and flowable connector |
| KR101763297B1 (en) | 2016-10-12 | 2017-08-04 | 하은건설(주) | Prevent cracks and repair method of construction structure |
| KR101815928B1 (en) | 2017-07-19 | 2018-01-08 | (주)위드엠텍 | Water-repellent Admixture for Reducing Shrinkage, Binder Composition for Repair Mortar with the Chemical Resistance Comprising the Admixture, Dry Mortar Composition Comprising the Binder and Concrete Repair Method Using the Mortar |
| KR101893060B1 (en) * | 2018-03-06 | 2018-08-29 | (주)엠디비산업 | Mortar composition for repairing and reinforcing concrete structure, and method of repairing and reinforcing concrete structure using the same |
| KR101914735B1 (en) | 2018-04-18 | 2018-11-02 | (주)경룡 | Crack inhibition type cement concrete composition with excellent corrosion and wear resistance and maintenance method for road pavement therewith |
-
2020
- 2020-07-30 KR KR1020200095201A patent/KR102224215B1/en active IP Right Grant
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110022776A (en) * | 2009-08-28 | 2011-03-08 | 이정배 | A composition of reinforcement mortar having quick-hardening and lightweight |
| KR20120021462A (en) * | 2010-08-02 | 2012-03-09 | (주)안풍건설 | Non-cracking repair mortar containing hybrid fibers and method for repairing concrete structures using non-cracking repair mortar |
| KR101255115B1 (en) | 2010-08-02 | 2013-04-22 | (주)안풍건설 | Non-cracking repair mortar containing hybrid fibers and method for repairing concrete structures using non-cracking repair mortar |
| KR101681596B1 (en) * | 2016-02-04 | 2016-12-01 | 주식회사 에코이앤씨 | Mortar composition of improving chemical resistance and durability for repairing and reinforcing concrete structures , and method of repairing and reinforcing concrete structures using the same |
| KR101763297B1 (en) | 2016-10-12 | 2017-08-04 | 하은건설(주) | Prevent cracks and repair method of construction structure |
| KR101760230B1 (en) | 2017-01-11 | 2017-07-20 | 김선영 | Reinforcement concrete structure and methods for repairing concrete structure using low contraction―high early strength type repairing mortar and flowable connector |
| KR101815928B1 (en) | 2017-07-19 | 2018-01-08 | (주)위드엠텍 | Water-repellent Admixture for Reducing Shrinkage, Binder Composition for Repair Mortar with the Chemical Resistance Comprising the Admixture, Dry Mortar Composition Comprising the Binder and Concrete Repair Method Using the Mortar |
| KR101893060B1 (en) * | 2018-03-06 | 2018-08-29 | (주)엠디비산업 | Mortar composition for repairing and reinforcing concrete structure, and method of repairing and reinforcing concrete structure using the same |
| KR101914735B1 (en) | 2018-04-18 | 2018-11-02 | (주)경룡 | Crack inhibition type cement concrete composition with excellent corrosion and wear resistance and maintenance method for road pavement therewith |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102547185B1 (en) | 2022-12-15 | 2023-06-26 | 주식회사 에스알티엔씨 | Concrete repair mortar composition with crack resistance and salt damage resistance and concrete repairing method using thereof |
| KR102603918B1 (en) | 2022-12-22 | 2023-11-22 | 주식회사 동명테크피아 | Concrete repairing and reinforcing mortar composition comprising surface modified nano calciumcarbonate ultra fine powder and concrete repairing and reinforcing method thereof |
| KR102569083B1 (en) * | 2023-03-28 | 2023-08-24 | 주식회사 모노화학 | A coating composition for preventing neutralization and aging of concrete structures, and a method of repairing cracks on the outer wall of concrete structures and preventing neutralization using the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101637987B1 (en) | Patching repair material and repairing method of deteriorated reinforced concrete structures | |
| JP4787187B2 (en) | Rapid hardened mortar and repair method using the same | |
| KR102196634B1 (en) | Mortar composition for repairing concrete structures with excellent chemical resistance and durability and seismic performance, and the method for repairing and reinforcing concrete structures using the same | |
| KR101674923B1 (en) | Repairing method of concrete structure using high-strength polymer mortar and fireproof mortar | |
| JP6223813B2 (en) | Mortar composition | |
| JP6647885B2 (en) | Corrosion resistant mortar composition | |
| KR102224215B1 (en) | Non-shirinkage mortar composition with crack resistance and the concrete structure section restoration method using thereof | |
| KR102195453B1 (en) | Crack repairing material for concrete structure with improved water proof performance and durability and method of repairing concrete structure using the same | |
| KR102347276B1 (en) | Light-weight mortar composition for repairing with improved fire proof, durability and workability and construction method of repairing concrete structure using the same | |
| KR102164414B1 (en) | Repair and reinforcement mortar with improved salt-resistance, Repair and reinforcement materials containing the same and Method of repair and reinforcement of concrete structure using the same | |
| JP7394194B2 (en) | grout mortar | |
| KR102284008B1 (en) | Rapid hardening cement mortar for maintenance and reinforcement of concrete structure, and Repair and reinforcement construction method of concrete structure using the same | |
| JP2020158371A (en) | Polymer cement mortar and repair method of reinforced concrete | |
| JP2007320783A (en) | Thick applying mortar | |
| JP7193437B2 (en) | Geopolymer composition | |
| JP2013170435A (en) | Method for repairing concrete structure | |
| KR101556231B1 (en) | Composition compound for repairing concrete srtructure and composition method using the same thing | |
| KR102414798B1 (en) | Crack reducing salt resistance mortar composition having excellent thixotropy and repairing and reinforcing method using the same | |
| KR102364379B1 (en) | Crack reducing chemical resistance mortar composition having excellent workability and repairing and reinforcing method using the same | |
| KR102218193B1 (en) | Modified ceramic polymer mortar composition and method of repairing and reinforcing cross section of concrete structure using the same | |
| KR102218239B1 (en) | Modified ceramic polymer mortar composition and method of repairing and reinforcing cross section of concrete structure using the same | |
| JP5046472B2 (en) | Cement admixture and cement composition | |
| KR102199459B1 (en) | Water reacting modified ceramic mortar composition, and repairing method of concrete structure using the same | |
| KR102218825B1 (en) | Mortar composition of scattering dust reduction type with improved workability, condensation speed, durability and mechanical property for repairment and reinforcement and method of repairing and reinforcing structure using the same | |
| JP2019167273A (en) | Mortar for plastering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AMND | Amendment | ||
| X091 | Application refused [patent] | ||
| AMND | Amendment | ||
| X701 | Decision to grant (after re-examination) | ||
| GRNT | Written decision to grant |