KR101058157B1 - Repairing and reinforcing method of concrete structure by using waterproofing agent for preventing a salt damage - Google Patents
Repairing and reinforcing method of concrete structure by using waterproofing agent for preventing a salt damage Download PDFInfo
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- KR101058157B1 KR101058157B1 KR1020100127172A KR20100127172A KR101058157B1 KR 101058157 B1 KR101058157 B1 KR 101058157B1 KR 1020100127172 A KR1020100127172 A KR 1020100127172A KR 20100127172 A KR20100127172 A KR 20100127172A KR 101058157 B1 KR101058157 B1 KR 101058157B1
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- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/08—Slag cements
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- 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
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- 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
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
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Abstract
Description
본 발명은 염해방지용 침투식 방수제 및 이를 이용한 철근콘크리트 구조물 보수 보강공법에 관한 것으로, 더욱 상세하게는 염해방지용 침투식 방수제의 규산질분말로 이루어진 침투제에 의해 철근콘크리트 구조물 표면 공극으로 염해방지용 침투식 방수제가 용이하게 침투하여 철근콘크리트 구조물 내측의 응축수 및 철근콘크리트 구조물 외부에서 발생한 물을 차단하는 작용을 하여 방수성능이 향상되고, 염해방지용 침투식 방수제는 수용성 1액형으로 제조과정이 용이하고 유기용제를 사용하지 않아 친환경적이면서 시공의 편의성을 도모할 수 있으며, 상기 염해방지용 침투식 방수제는 겔 형태로 이루어져 조기에 철근콘크리트 구조물과 일체화되기 때문에 작업시간을 단축할 수 있는 염해방지용 침투식 방수제 및 이를 이용한 철근콘크리트 구조물 보수 보강공법에 관한 것이다.
The present invention relates to an anti-salting penetration type waterproofing agent and a reinforcing method for repairing reinforced concrete structures using the same. It penetrates easily and blocks condensate water inside the reinforced concrete structure and water generated outside the reinforced concrete structure, improving the waterproofing performance, and the salt-proof penetration type waterproofing agent is a water-soluble one-component type that is easy to manufacture and does not use organic solvents. Since it is eco-friendly and construction convenience can be achieved, and the salt-proof penetration type waterproofing agent is formed in a gel form and is integrated with the reinforced concrete structure early, the salt-proofing penetration type waterproofing agent and the reinforced concrete structure using the same can be shortened. Maintenance relates to the reinforcement.
콘크리트구조물의 내구성 예를들면 교량, 하수암거, 터널, 냉각탑, 빌딩, 및 기타 구조물의 장기적인 내구성은 콘크리트구조물의 품질과 철근을 둘러싼 콘크리트 피복두께에 의해 결정된다. 콘크리트구조물의 열화를 초래하는 수많은 원인들이 존재한다. 콘크리트구조물의 탄산화는 콘크리트와 철근의 경계면에서 콘크리트의 높은 pH를 감소시켜 철근부식을 초래한다. 이러한 부식은 제설용 염분, 염화물 혹은 물속에 존재하는 황산염의 침투에 의해 더 가속된다. 철근의 산화는 산화철이 형성되고, 부식으로 인한 부피가 팽창함에 따라 콘크리트에서 인장력을 야기시켜 콘크리트의 균열과 콘크리트 파괴가 일어나게 된다. 콘크리트의 취성적인 성질(특성)은 종종 건조 수축과 하중부담으로 인해 균열이 발생한다. 균열은 물, 이산화탄소 및 산소가 철근으로 침투하게 만들며 종래에는 철근부식이 일어난다. 철근의 부식을 방지하고 콘크리트 구조물의 전반적인 장기 내구성을 개선하기 위해 여러 가지 방법이 사용되고 있다.Durability of Concrete Structures For example, the long-term durability of bridges, sewage culverts, tunnels, cooling towers, buildings, and other structures is determined by the quality of the concrete structure and the concrete cover thickness surrounding the rebar. There are a number of causes that lead to deterioration of concrete structures. Carbonation of concrete structures reduces the high pH of concrete at the interface between concrete and rebar, resulting in steel corrosion. This corrosion is further accelerated by the penetration of snow salts, chlorides or sulfates in the water. Oxidation of the reinforcing steel leads to the formation of iron oxides and the expansion of the volume due to corrosion causes tension in the concrete, causing the concrete to crack and fracture. The brittle nature of concrete often causes cracking due to dry shrinkage and load burden. The cracks cause water, carbon dioxide and oxygen to penetrate the rebar and conventionally corrode steel. Various methods are used to prevent corrosion of reinforcing bars and to improve the overall long-term durability of concrete structures.
예컨대, 철근 콘크리트 구조물 표면에 에폭시계, 불소수지계, 아크릴 고무계, 염화고무계, 우레탄계 등의 도료를 이용하여 피막을 형성하는 방법이 개발되었다.
For example, a method of forming a film using a paint such as epoxy, fluororesin, acrylic rubber, chlorinated rubber, urethane or the like on the surface of a reinforced concrete structure has been developed.
하지만, 종래의 피막형성방법은 유기질 도료를 사용하기 때문에 친환경적이지 못하고, 특히, 철근콘크리트 구조물 표면의 공극을 효율적으로 메우지 못해 철근콘크리트 구조물과의 부착력이 저하되어, 시공 후 박리현상 및 방수 효율성이 저하되어, 철근콘크리트 구조물의 열화를 효율적으로 방지할 수 없는 문제점이 있었다.
However, the conventional film forming method is not environmentally friendly because organic coating is used, and in particular, the adhesion to the reinforced concrete structure is lowered because the voids on the surface of the reinforced concrete structure are not effectively filled, resulting in peeling phenomenon and waterproofing efficiency after construction. Deteriorated, there was a problem that can not effectively prevent degradation of the reinforced concrete structure.
상기와 같은 문제점을 해결하기 위한 본 발명의 염해방지용 침투식 방수제를 이용한 철근콘크리트 구조물 보수 보강공법은 철근콘크리트 구조물 표면의 화학적부식, 염해, 동해 등에 의한 열화부분을 치핑하는 표면 전처리단계와; 철근콘크리트 구조물에 포함된 노출되어 있는 철근에 형성되어 있는 녹을 제거하는 철근 녹 제거단계와; 100 ∼ 150㎏/㎡압력의 고압수로 노출된 철근을 포함하는 철근 콘크리트 구조물을 세척하는 고압수 세척단계와; 상기 고압수 세척단계를 거친 철근콘크리트 구조물에 포함된 노출된 철근의 방청 작업 및 철근콘크리트 구조물 표면에 프라이머를 형성하기 위해 방청 프라이머를 도포하는 방청 프라이머 도포단계와; 규산질 분말로 이루어진 침투제 15 ∼ 25중량%, 슬래그로 이루어진 결합제 18 ∼ 23중량%, 탄산칼슘으로 이루어진 충진제 10 ∼ 15중량%, 무기칼슘염으로 이루어진 경화제 0.05 ∼ 0.3중량%, 세룰로오스로 이루어진 개선제 0.01 ∼ 0.05중량%, 폴리비닐아세테이트로 이루어진 방수제 0.5 ∼ 3중량%, 지방산 에스테르로 이루어진 발수제 0.5 ∼ 5중량%, 산화티타늄으로 이루어진 첨가제 0.5 ∼ 3중량%, 규사분말로 이루어진 강도증진제 40 ∼ 55중량%, 탄화수소계 폴리글리콜계로 이루어진 소포제 0.05 ∼ 3중량%, 멜라민계로 이루어진 분산제 0.1 ∼ 5중량%로 이루어진 속경성 폴리머 보수 몰탈을 제조하고, 상기 속경성 폴리머 보수 몰탈 87중량%에 물 13중량%를 혼합하여 염해방지용 침투식 방수제를 제조하는 염해방지용 침투식 방수제 제조단계와; 상기 방청 프라이머를 도포한 표면에 염해방지용 침투식 방수제를 0.25㎏/㎡양으로 2 ∼ 5회, 1 ∼ 2.5mm두께로 도포하는 염해방지용 침투식 방수제 도포단계와; 상기 염해방지용 침투식 방수제가 도포된 표면에 표면 보호제를 도포하는 표면보호제 도포단계;로 이루어진 것을 특징으로 한다.Reinforced concrete structure repair reinforcement method using the salt-proof penetration-proof waterproofing agent of the present invention for solving the above problems is a surface pretreatment step of chipping the deteriorated portion due to chemical corrosion, salt, copper sea, etc. of the surface of the reinforced concrete structure; A rebar rust removal step of removing rust formed on the exposed rebar included in the reinforced concrete structure; A high pressure water washing step of washing the reinforced concrete structure including rebar exposed to high pressure water at a pressure of 100 to 150 kg / m 2; Anti-corrosive primer applying step of applying the anti-rust primer to form a primer on the surface of the reinforced concrete structure and the exposed steel bar included in the reinforced concrete structure after the high-pressure water washing step; 15 to 25% by weight penetrant made of siliceous powder, 18 to 23% by weight binder made of slag, 10 to 15% by weight filler made of calcium carbonate, 0.05 to 0.3% by weight hardener made of inorganic calcium salt, improver made of cellulose 0.01 to 0.05% by weight, 0.5 to 3% by weight of waterproofing agent made of polyvinylacetate, 0.5 to 5% by weight of water repellent consisting of fatty acid ester, 0.5 to 3% by weight of additive consisting of titanium oxide, 40 to 55% by weight of strength enhancer consisting of silica sand powder %, 0.05 to 3% by weight of a defoaming agent made of a hydrocarbon-based polyglycol-based, 0.1 to 5% by weight of a dispersant made of melamine-based, to prepare a fast curing polymer repair mortar, water 87% by weight of the fast curing polymer repair mortar 13% by weight A saltproofing penetration type waterproofing agent for preparing a saltproofing penetration type waterproofing agent by mixing; A saltproofing penetration type waterproofing agent applying step of applying the saltproofing penetration type waterproofing agent to the surface on which the rust preventive primer is applied in an amount of 0.25 kg / m 2 2 to 5 times and 1 to 2.5mm thickness; Characterized in that consisting of; a surface protective agent coating step of applying a surface protective agent to the surface to which the salt-proof penetration-proof waterproofing agent is applied.
본 발명의 염해방지용 침투식 방수제를 이용한 철근콘크리트 구조물 보수 보강공법은 방청 프라이머 도포단계 전에 도포하고자 하는 철근콘크리트 구조물의 일부 표면에 시험도포를 실시하는 것을 특징으로 한다.Reinforced concrete structure repair reinforcement method using a salt-proof penetration-proof waterproofing agent of the present invention is characterized in that the test coating is applied to a portion of the surface of the reinforced concrete structure to be applied before the antirust primer coating step.
본 발명의 염해방지용 침투식 방수제를 이용한 철근콘크리트 구조물 보수 보강공법은 방청 프라이머 도포 단계에서 도포하고자 하는 철근콘크리트 구조물 표면에 요철이 많거나 흡수가 빠른 경우에는 회수를 늘려가면서 도포하여, 도포두께가 0.5mm이상이 되도록 하는 것을 특징으로 한다.Reinforced concrete structure repair reinforcement method using the salt-proof penetration-proof waterproofing agent of the present invention is applied to the surface of the reinforced concrete structure to be applied in the rust-preventing primer coating step while increasing the number of times, if the irregularities or absorption is fast, the coating thickness is 0.5 It is characterized by being more than mm.
본 발명의 염해방지용 침투식 방수제를 이용한 철근콘크리트 구조물 보수 보강공법은 염해방지용 침투식 방수제 도포단계 이후에 염해방지용 침투식 방수제 도포 후 흙손으로 공기포를 제거하며 평탄작업을 2 ∼ 3회 하여 면처리하는 염해방지용 침투식 방수제 면처리 단계가 더 포함되는 것을 특징으로 한다.Reinforced concrete structure repair reinforcement method using the salt-proof penetration-proof waterproofing agent of the present invention after applying the salt-proof penetration-proof waterproofing agent step after removing the salt-proof penetration-proof waterproofing agent to remove the air bubble with a trowel and the surface treatment 2 to 3 times It characterized in that it further comprises a salt-proof penetration type waterproofing surface treatment step.
본 발명의 염해방지용 침투식 방수제를 이용한 철근콘크리트 구조물 보수 보강공법의 방청 프라이머 도포단계에서의 방청 프라이머는 폴리머 35 ∼ 49중량%, 분산제 0.05 ∼ 0.5중량%, 소포제 0.01 ∼ 0.05중량%, 방부제 0.05 ∼ 1중량%, 침투제 0.05 ∼ 4중량%, 물 50 ∼ 60중량%로 이루어진 것을 특징으로 한다.The antirust primer in the anticorrosive primer coating step of the reinforced concrete structure repair reinforcing method using the salt-proof penetration preventing agent of the present invention is 35 to 49% by weight of polymer, 0.05 to 0.5% by weight of dispersant, 0.01 to 0.05% by weight of antifoam, and 0.05 to preservative. It is characterized by consisting of 1% by weight, 0.05 to 4% by weight of the penetrant, 50 to 60% by weight of water.
본 발명의 염해방지용 침투식 방수제를 이용한 철근콘크리트 구조물 보수 보강공법의 표면 보호제 도포단계에서의 표면 보호제는 폴리머 40 ∼ 60중량%, 분산제 0.05 ∼ 0.3중량%, 가소제 2 ∼ 10중량%, 결합제 35 ∼ 45중량%, 솔벤트 0.05 ∼ 5중량%, 증점제 0.01 ∼ 1중량%, 가성소다 0.02 ∼ 0.09중량%, 소포제 0.001 ∼ 0.5중량%, 방부제 0.05 ∼ 5중량%, 색상안료 0.01 ∼ 3중량%, 염화메틸렌 0.07 ∼ 5중량%로 이루어진 것을 특징으로 한다.
Surface protective agent in the application step of the surface protective agent of the reinforced concrete structure maintenance reinforcement method using the salt-proof penetration type waterproofing agent of the present invention 40 to 60% by weight, 0.05 to 0.3% by weight of dispersant, 2 to 10% by weight of plasticizer, binder 35 to 45 wt%, solvent 0.05-5 wt%, thickener 0.01-1 wt%, caustic soda 0.02-0.09 wt%, defoamer 0.001-0.5 wt%, preservative 0.05-5 wt%, color pigment 0.01-3 wt%, methylene chloride It is characterized by consisting of 0.07 to 5% by weight.
본 발명의 염해방지용 침투식 방수제 및 이를 이용한 철근콘크리트 구조물 보수 보강공법은 염해방지용 침투식 방수제의 규산질분말로 이루어진 침투제에 의해 철근콘크리트 구조물 표면 공극으로 염해방지용 침투식 방수제가 용이하게 침투하여 철근콘크리트 구조물 내측의 응축수 및 철근콘크리트 구조물 외부에서 발생한 물을 차단하는 작용을 하여 방수성능이 향상된다.The saltproofing penetration type waterproofing agent of the present invention and the reinforced concrete structure repairing reinforcement method using the same are easily penetrated into the surface of the reinforced concrete structure by the penetration agent made of siliceous powder of the saltproofing type penetration waterproofing agent. Water-proofing performance is improved by blocking the water generated outside the condensate and reinforced concrete structure inside.
또한, 염해방지용 침투식 방수제는 수용성 1액형으로 제조과정이 용이하고 유기용제를 사용하지 않아 친환경적이면서 시공의 편의성을 도모할 수 있다.In addition, the salt-proof penetration type waterproofing agent is a water-soluble one-part type, which facilitates the manufacturing process, and does not use an organic solvent, thereby making it environmentally friendly and improving construction convenience.
아울러, 상기 염해방지용 침투식 방수제는 겔 형태로 이루어져 조기에 철근콘크리트 구조물과 일체화되기 때문에 작업시간을 단축할 수 있는 유용한 발명이다.
In addition, the salt-proof penetration type waterproofing agent is a useful invention that can reduce the working time because it is made in the form of a gel is integrated with the reinforced concrete structure early.
이하, 본 발명의 염해방지용 침투식 방수제를 이용한 철근콘크리트 구조물 보수 보강공법을 상세히 살펴보면 다음과 같다.Hereinafter, the reinforced concrete structure repair reinforcement method using the salt-proof penetration-proof waterproofing agent of the present invention will be described in detail.
우선, 철근콘크리트 구조물 표면의 화학적부식, 염해, 동해 등에 의한 열화부분을 치핑한다.(표면 전처리단계)First, chipping of the deteriorated parts due to chemical corrosion, salt damage, and east sea on the surface of the reinforced concrete structure (surface pretreatment step)
상기 표면 전처리단계를 진행하기 위해서는 열화부분과 들뜬 부분을 브레이커, 전동해머 등을 이용하게 제거를 한다.In order to proceed with the surface pretreatment step, the deteriorated part and the excited part are removed using a breaker, an electric hammer, or the like.
이때에, 철근콘크리트 구조물의 철근 주위로 10cm 폭을 제거하며 철근의 뒤쪽까지 제거를 한다.At this time, 10cm width is removed around the rebar of the reinforced concrete structure and removed to the rear of the rebar.
또한, 상기 철근을 기준으로 좌, 우측은 30cm이상을 제거하도록 하고, 연약부분과 부착물 등은 와이어 브러쉬를 이용하여 제거한다.In addition, the left and right on the basis of the reinforcing bar to remove more than 30cm, the soft portion and the attachment is removed using a wire brush.
다음으로, 상기와 같이 치핑이 완료되면 철근콘크리트 구조물에 포함된 노출되어 있는 철근에 형성되어 있는 녹을 제거한다.(철근 녹 제거단계)Next, when chipping is completed as described above to remove the rust formed on the exposed reinforcement contained in the reinforced concrete structure. (Reinforced rust removal step)
상기 철근 녹 제거단계에서 녹을 제거하기 위해서는 전동 와이어 브러쉬를 이용하여 노출로 인하여 부식된 철근의 녹을 제거하고, 그라인더를 사용할 경우에는 기존철근의 손상이 없도록 적절한 기기를 선정하도록 한다.In order to remove the rust in the rebar rust removal step, the rust of the rebar corroded by exposure is removed by using an electric wire brush, and when using a grinder, an appropriate device is selected so as not to damage the existing rebar.
이때에, 철근 콘크리트 구조물의 철근 부식이 많이 발생하였을 경우에는 철근 일부를 제거한 상태에서 보강철근을 더 덧대도록 한다.At this time, when a lot of steel corrosion of the reinforced concrete structure occurs, the reinforcing bar is further padded in a state in which some of the steel bars are removed.
다음으로, 100 ∼ 150㎏/㎡압력의 고압수로 노출된 철근을 포함하는 철근 콘크리트 구조물을 세척한다.(고압수 세척단계)Next, to wash the reinforced concrete structure including the rebar exposed to high pressure water of 100 ~ 150㎏ / ㎡ pressure. (High pressure water washing step)
상기 고압수 세척단계는 철근콘크리트 구조물의 치핑작업 및 철근 녹 제거가 완료된 후에 표면을 세정하기 위한 작업으로, 철근콘크리트 구조물 표면에 남아 있는 이물질을 완전히 제거하기 위해 실시하게 된다.The high pressure water washing step is to clean the surface after the chipping operation of the reinforced concrete structure and the removal of the reinforcing steel rust is performed to completely remove foreign substances remaining on the surface of the reinforced concrete structure.
상기 고압수를 이용해 이물질을 제거할 때에는 위쪽에서 아래쪽으로 세정하도록 하며, 특히, 오염된 물이 하부 벽면에 부착되지 않도록 주의를 기울여 작업하도록 한다.When the foreign material is removed by using the high pressure water, it is to be washed from the top to the bottom, and in particular, to work with care so that contaminated water does not adhere to the lower wall.
다음으로, 상기 고압수 세척단계를 거친 철근콘크리트 구조물에 포함된 노출된 철근의 방청 작업 및 철근콘크리트 구조물 표면에 프라이머를 형성하기 위해 방청 프라이머를 도포한다.(방청 프라이머 도포단계)Next, the rust preventive primer is applied to form the primer on the surface of the reinforced concrete structure and the anti-rust work of the exposed reinforcement contained in the reinforced concrete structure after the high-pressure water washing step.
상기 방청 프라이머는 방청 기능과 더불어 프라이머 기능을 동시에 수행하는 것으로, 눈이나 비가 내리거나 습도가 높아 철근콘크리트 구조물 표면에 결로가 발생한 경우에는 시공을 하지 않으며, 도포면의 자연건조상태가 즉, 함수율이 15%이내인 것을 확인한 후 도포하도록 한다.The rust preventive primer is a rust preventive function and at the same time perform a primer function, if the condensation occurs on the surface of the reinforced concrete structure due to rain or rain or high humidity, the construction is not natural, that is, the water content is 15 Apply after confirming to within%.
특히, 시공하고자 하는 철근콘크리트 구조물 표면 전체에 도포하기 전 철근콘크리트 구조물의 일부분에 평균도포량 0.25㎏/㎡으로 총 2 ∼ 5회에 걸쳐 시험도포를 거친 후 이상이 없는지 여부를 확인하도록 한다.In particular, before applying to the entire surface of the reinforced concrete structure to be constructed, after applying a total of two to five times the average coating amount of 0.25㎏ / ㎡ to a portion of the reinforced concrete structure to check whether there is no abnormality.
이때에, 상기 방청 프라이머의 도포는 철근콘크리트 구조물 표면에 있는 모든 불순물을 제거하고 롤러, 붓, 스펀지 등으로 누르듯이 2 ∼ 5회에 걸쳐 도포하도록 하며, 1차 도포 후 30분이 경과한 후에 제차 도포하는 방식으로 하는 것이 바람직하다.At this time, the application of the rust-preventing primer is to remove all impurities on the surface of the reinforced concrete structure, and to apply two to five times as if pressing with a roller, brush, sponge, etc., the second application after 30 minutes after the first application It is preferable to make it the way.
또한, 도포하고자 하는 면이 넓을 경우에는 기계식 스프레이를 이용하여 도폭한다.In addition, when the surface to be applied is wide, it is spread using a mechanical spray.
만약, 도포하고자 하는 철근콘크리트 구조물 표면에 요철이 많거나 흡수가 빠른 경우에는 회수를 늘려가면서 도포가 충분히 되도록 한다.If the surface of the reinforced concrete structure to be applied has a lot of unevenness or rapid absorption, the application is sufficient while increasing the number of times.
여기서, 상기 방청 프라이머를 5회를 초과하여 실시하게 되면 철근콘크리트 구조물 표면에 건조고형물이 남게 되어 부착성의 저하가 발생하므로 정해진 회수만큼만 실시하는 것이 중요하다.Here, if the antirust primer is performed more than 5 times, it is important to carry out only a predetermined number of times because dry solids remain on the surface of the reinforced concrete structure, resulting in deterioration of adhesion.
이때에, 상기 방청 프라이머는 건조시간은 25℃를 기준으로 24시간, 가사시간은 25℃를 기준으로 30분인 것을 이용하도록 한다.At this time, the rust preventive primer is a drying time based on 25 ℃ 24 hours, the pot life is to use that 30 minutes based on 25 ℃.
이러한 방청 프라이머는 폴리머 35 ∼ 49중량%, 분산제 0.05 ∼ 0.5중량%, 소포제 0.01 ∼ 0.05중량%, 방부제 0.05 ∼ 1중량%, 침투제 0.05 ∼ 4중량%, 물 50 ∼ 60중량%로 구성되어 있다.Such a rust preventive primer consists of 35-49 weight% of polymers, 0.05-0.5 weight% of a dispersing agent, 0.01-0.05 weight% of antifoamers, 0.05-1 weight% of preservatives, 0.05-4 weight% of penetrants, and 50-60 weight% of water.
다음으로, 규산질 분말로 이루어진 침투제 15 ∼ 25중량%, 슬래그로 이루어진 결합제 18 ∼ 23중량%, 탄산칼슘으로 이루어진 충진제 10 ∼ 15중량%, 무기칼슘염으로 이루어진 경화제 0.05 ∼ 0.3중량%, 세룰로오스로 이루어진 개선제 0.01 ∼ 0.05중량%, 방수제 0.5 ∼ 3중량%, 지방산 에스테르로 이루어진 발수제 0.5 ∼ 5중량%, 산화티타늄으로 이루어진 첨가제 0.5 ∼ 3중량%, 규사분말로 이루어진 강도증진제 40 ∼ 55중량%, 탄화수소계 폴리글리콜계로 이루어진 소포제 0.05 ∼ 3중량%, 멜라민계로 이루어진 분산제 0.1 ∼ 5중량%로 이루어진 속경성 폴리머 보수 몰탈을 제조하고, 상기 속경성 폴리머 보수 몰탈 87중량%에 물 13중량%를 혼합하여 염해방지용 침투식 방수제를 제조한다.(염해방지용 침투식 방수제 제조단계)Next, 15 to 25% by weight penetrant made of siliceous powder, 18 to 23% by weight binder made of slag, 10 to 15% by weight filler made of calcium carbonate, 0.05 to 0.3% by weight hardener made of inorganic calcium salt, cellulose 0.01 to 0.05% by weight of the improver, 0.5 to 3% by weight of the waterproofing agent, 0.5 to 5% by weight of the water repellent consisting of the fatty acid ester, 0.5 to 3% by weight of the additive consisting of titanium oxide, 40 to 55% by weight of the strength enhancer consisting of silica sand powder, A fast curing polymer water-retaining mortar comprising 0.05 to 3% by weight of a defoaming agent made of hydrocarbon-based polyglycol and 0.1 to 5% by weight of a dispersing agent consisting of melamine-based was prepared, and 13% by weight of water was mixed with 87% by weight of the fast-hardening water-retaining mortar. Manufacture the penetration-proof waterproofing agent for preventing salts.
여기서, 침투제는 철근콘크리트 구조물 표면의 공극으로 침투하도록 미립자형태로 형성하도록 한다.Here, the penetrant is formed in the form of fine particles to penetrate into the pores of the reinforced concrete structure surface.
특히, 상기 침투제는 임계치를 초과할 경우 철근콘크리트 구조물로 침투하는 양이 많아 철근콘크리트 구조물에 도포되는 양이 적어지게 되고, 임계치 미만일 경우에는 철근콘크리트 구조물 표면으로 침투가 이루어지는 양이 적어져 방수성능을 개선하지 못하게 된다.In particular, when the penetrant exceeds the threshold, the amount penetrated into the reinforced concrete structure is large, and the amount applied to the reinforced concrete structure is less. When the penetrant is lower than the threshold, the penetrating agent penetrates into the surface of the reinforced concrete structure, thereby reducing the waterproof performance. It will not improve.
또한, 상기 결합제는 슬래그를 이용하여 이루어지게 되는데 이러한 슬래그는 물성을 개선하면서 장기강도를 유지할 수 있도록 작용하게 된다.In addition, the binder is made by using a slag such a slag is to act to maintain long-term strength while improving the physical properties.
그리고 충진제인 탄산칼슘은 제품의 점성력을 증진시키는 작용을 하게 된다.And calcium carbonate as a filler will act to enhance the viscosity of the product.
한편, 경화제로서 이용하는 무기칼슘염은 수분흡수가 빨라 경화제로서 이용되며, 특히, 본 발명에서는 동결제로서의 효과도 얻을 수 있게 된다.On the other hand, the inorganic calcium salt used as a curing agent is used as a curing agent because of its rapid water absorption, and in particular, the effect as a freezing agent can be obtained in the present invention.
이러한, 경화제는 임계치 미만일 경우 수분 흡수가 원활히 이루어지지 않게 되는 문제점이 있고, 임계치를 초과하였을 경우에는 수분흡수량이 많아져 접착성을 저하시키는 문제점이 발생하게 된다.When the curing agent is less than the threshold value, there is a problem in that the water absorption is not smoothly achieved. If the curing agent is exceeded, the amount of water absorption increases and thus the adhesiveness is lowered.
특히, 본 발명에서는 수분량이 적어 경화제의 사용량을 늘리게 되면 접착성이 현저히 저하되므로 임계치 내에서 이용하는 것이 좋다.In particular, in the present invention, when the amount of moisture is small and the amount of the curing agent is increased, the adhesion is significantly lowered, and therefore it is preferable to use it within the threshold.
그리고 개선제로서 이용하는 세롤로오스는 각 구성요소들을 연결하는 연결고리로서 재료분리방지 효과 및 강도증진을 위해 이용된다.Seroloose, which is used as an improving agent, is used as a connecting link connecting each component to prevent material separation and increase strength.
폴리비닐아세테이트(PVAc:Polyvinyl Acetate)로 이루어진 방수제는 폴리머 계열로서 방수효과를 향상시키기 위해 이용된다.Waterproofing agent composed of polyvinyl acetate (PVAc) is a polymer type and is used to improve waterproofing effect.
또한, 발수제는 지방산으로 이루어져 있으며 본 발명에서는 발수효과를 향상시키기 위해 이용한다.In addition, the water repellent is composed of fatty acids and used in the present invention to improve the water repellent effect.
한편, 첨가제로서 산화티타늄은 백색안료로서 유기물 분해 및 공기정화역할을 수행하며 특히, 굴절률이 큰 특성을 통해 자외선 차단효과를 얻을 수 있게 된다.On the other hand, titanium oxide as an additive performs the role of organic decomposition and air purification as a white pigment, in particular, it is possible to obtain the UV blocking effect through a large refractive index.
그리고 규사분말로 이루어진 강도증진제는 전체적인 강도를 향상시키고 침투효과를 향상시키기 위해 이용되며, 특히, 침투제보다 입도가 크게 형성하는 것이 중요하다.In addition, the strength enhancer made of silica sand powder is used to improve the overall strength and improve the penetration effect, and in particular, it is important to form a larger particle size than the penetrant.
아울러 소포제는 탄화수소 폴리글리콜계로서 기포를 억제하는 효과를 얻을 수 있고, 분산제는 멜라민계로서 유동성을 증진시키기 위해 이용된다.In addition, the antifoaming agent can obtain the effect of suppressing bubbles as a hydrocarbon polyglycol type, and the dispersing agent is used to enhance the fluidity as the melamine type.
이때에 상기 염해방지용 침투식 방수제는 재료공급기, 혼합기, 물탱크, 몰탈압송장비, 뿜칠장비와 같은 시공장비를 설치한 후 속경성 폴리머 보수 몰탈과 물을 충분히 혼합할 수 있도록 하는 것이 중요하다.At this time, it is important that the salt-proof penetration type waterproofing agent is capable of sufficiently mixing the high-speed polymer repair mortar and water after installing construction equipment such as a material feeder, a mixer, a water tank, a mortar pumping equipment, and a spraying equipment.
이러한, 염해방지용 침투식 방수제는 철근콘크리트 구조물에 용이하게 침투하여 철근콘크리트 구조물의 공극을 효율적으로 메워서 방수효과를 향상시키고, 특히, 방수제를 통해 외부에서 유입될 수 있는 물을 차단함과 동시에 강도증진제를 통해 투수성 및 강도증진효과를 얻을 수 있게 되는 것이다.Such a salt-proof penetration type waterproofing agent easily penetrates into the reinforced concrete structure to effectively fill the voids of the reinforced concrete structure to improve the waterproofing effect, and in particular, to block water that can be introduced from the outside through the waterproofing agent and at the same time, the strength It is possible to obtain permeability and strength enhancing effect through the enhancer.
특히, 본 발명에서는 다양한 성분을 혼합한 속경성 폴리머 보수 몰탈 87중량%에 물 13중량%를 혼합하여 수용성의 1액형 염해방지용 침투식 방수제를 채택함으로써, 제조의 용이성 및 시공의 용이성을 구현할 수 있고, 유기용제를 사용하지 않아 친환경적인 효과를 얻을 수 있게 되는 것이다.Particularly, in the present invention, water-soluble one-part salt prevention penetration type waterproofing agent is mixed by mixing 13% by weight of water with 87% by weight of hard-curing polymer water-retaining mortar mixed with various components, thereby making it easy to manufacture and ease of construction. By not using organic solvents, eco-friendly effects can be obtained.
다음으로, 상기 방청 프라이머를 도포한 표면에 상기 염해방지용 침투식 방수제 제조단계에서 제작한 염해방지용 침투식 방수제를 0.25㎏/㎡양으로 2 ∼ 5회, 1 ∼ 2.5mm두께로 도포한다.(염해방지용 침투식 방수제 도포단계)Next, the salt-proof penetration-proof waterproofing agent prepared in the salt-preventing penetration-proof waterproofing agent manufacturing step is applied 2 to 5 times in a quantity of 0.25 kg / m 2 and 1 to 2.5 mm on the surface of the anti-rust primer. Preventing penetration type waterproofing agent application step)
상기 염해방지용 침투식 방수제를 도포는 뿜칠장비를 통해 도포가 가능하며, 특히, 뿜칠 장비를 통해 도포시 뿜칠장비의 노즐과 철근콘크리트 구조물 사이의 간격을 30 ∼ 100cm를 유지하도록 하며 철근콘크리트 구조물 표면의 가장자리에서부터 중앙으로 이동하며 나선형으로 도포를 한다.It is possible to apply the spray-proof waterproofing agent for spraying the salt prevention prevention, in particular, when spraying through the spraying equipment to maintain the interval between the nozzle of the spraying equipment and the reinforced concrete structure 30 ~ 100cm and the surface of the reinforced concrete structure Spirally apply from the edges to the center.
이때에, 시공횟수가 많아지게 될 경우에는 다음 시공면과의 접착력을 향상시키기 위해 먼저 도포한 면을 거칠게 시공하도록 한다.At this time, if the number of times of construction is to be increased to roughly apply the first coated surface in order to improve the adhesion with the next construction surface.
여기서, 염해방지용 침투식 방수제의 최종 도포가 완료되면 흙손으로 공기포를 제거하면서 평탄작업을 2 ∼ 3회에 걸쳐 시행하여 면처리를 하는 면처리 단계를 더 포함하여 구성할 수도 있다.Here, when the final application of the salt-proof penetration-proof waterproofing agent is completed, it may be configured to further include a surface treatment step of performing a surface treatment two to three times while removing the air bubbles with a trowel.
특히, 본 발명에서의 염해방지용 침투식 방수제는 철근콘크리트 구조물에 도포시 철근 콘크리트 구조물 표면의 공극으로 침투가 이루어짐과 동시에 겔 형태로 이루어져 있어 철근콘크리트 구조물과 일체화가 되어 시공시간을 단축할 수 있음은 물론 방수성을 향상시키는 효과를 얻을 수 있게 되는 것이다.In particular, the salt-proof penetration type waterproofing agent according to the present invention is applied to the reinforced concrete structure when the penetration is made into the pores of the surface of the reinforced concrete structure and at the same time made of a gel form can be shortened the construction time by being integrated with the reinforced concrete structure Of course, the effect of improving the waterproofness will be obtained.
다음으로, 상기 염해방지용 침투식 방수제가 도포된 표면에 표면 보호제를 도포하여 본 발명을 완료하게 된다.(표면보호제 도포단계)Next, the surface protection agent is applied to the surface to which the salt-proof penetration type waterproofing agent is applied to complete the present invention. (Surface protection agent application step)
상기 표면보호제 도포단계는 염해방지용 침투식 방수제 도포단계에서 도포한 염해방지용 침투식 방수제의 양생이 완료된 이후에 시행하도록 하며, 특히, 표면보호제는 시공전 핸드믹서기와 같은 교반수단을 이용해 다시 혼합시켜 사용하도록 한다.The surface protective agent coating step is to be carried out after curing of the salt-proof penetration-proof waterproofing agent applied in the salt-proof penetration-proof waterproofing agent application step, in particular, the surface protective agent is mixed again using a stirring means such as a hand mixer before construction Do it.
여기서, 상기 표면보호제를 도포한 후에는 부유물 등이 부착되지 않도록 양생기간에는 보호커버를 씌우도록 하는 것이 중요하다.Here, after applying the surface protective agent, it is important to cover the protective cover during the curing period so that floating matters are not attached.
이러한, 표면 보호제는 폴리머 40 ∼ 60중량%, 분산제 0.05 ∼ 0.3중량%, 가소제 2 ∼ 10중량%, 결합제 35 ∼ 45중량%, 솔벤트 0.05 ∼ 5중량%, 증점제 0.01 ∼ 1중량%, 가성소다 0.02 ∼ 0.09중량%, 소포제 0.001 ∼ 0.5중량%, 방부제 0.05 ∼ 5중량%, 색상안료 0.01 ∼ 3중량%, 염화메틸렌 0.07 ∼ 5중량%로 구성되어 있다.Such surface protective agent is 40-60 weight% of a polymer, 0.05-0.3 weight% of a dispersing agent, 2-10 weight% of a plasticizer, 35-45 weight% of a binder, 0.05-5 weight% of a solvent, 0.01-1 weight% of a thickener, and 0.02 caustic soda. It is comprised from-0.09 weight%, the defoaming agent 0.001-0.5 weight%, the antiseptic agent 0.05-5 weight%, the color pigment 0.01-3 weight%, and the methylene chloride 0.07-5 weight%.
상기와 같이 본 발명은 염해방지용 침투식 방수제가 철근콘크리트 구조물 표면의 공극에 침투되어 접착력을 향상시킴과 동시에 공극을 효율적으로 메워 방수효과를 얻을 수 있으며, 특히, 상기 염해방지용 침투식 방수제가 철근콘크리트 구조물과과 일체화된 상태를 조기에 이루어지기 때문에 작업시간을 단축할 수 있을 뿐만 아니라, 외부로 부터 유입되는 물을 염해방지용 침투식 방수제 및 표면 보호제를 통해 차단하여 철근콘크리트 구조물의 내구성을 증진시킬 수 있도록 작용하게 된다.As described above, the present invention can prevent the salt-proof penetration type waterproofing agent from penetrating into the pores on the surface of the reinforced concrete structure to improve adhesion and at the same time efficiently fill the voids to obtain a waterproofing effect. In particular, the saltproofing penetration type waterproofing agent is reinforced concrete Since the system is integrated with the structure at an early stage, working time can be shortened, and the water flowing from the outside can be prevented through penetration-proof waterproofing and surface protection agent to prevent salt from being raised, thereby improving durability of the reinforced concrete structure. It will work.
상술한 실시 예는 본 발명의 가장 바람직한 실시 예에 대해 기재한 것이지만, 본 발명은 이에 한정되지 않고 본 발명의 기술적인 사상에서 벗어나지 않는 범위 내에서 다양한 형태로 변경하여 실시 가능함을 명시한다.Although the above-described embodiments have been described with respect to the most preferred embodiments of the present invention, the present invention is not limited thereto, and it is noted that the present invention may be modified in various forms without departing from the technical spirit of the present invention.
Claims (6)
철근콘크리트 구조물에 포함된 노출되어 있는 철근에 형성되어 있는 녹을 제거하는 철근 녹 제거단계;
100 ∼ 150㎏/㎡압력의 고압수로 노출된 철근을 포함하는 철근 콘크리트 구조물을 세척하는 고압수 세척단계;
상기 고압수 세척단계를 거친 철근콘크리트 구조물에 포함된 노출된 철근의 방청 작업 및 철근콘크리트 구조물 표면에 프라이머를 형성하기 위해 방청 프라이머를 도포하는 방청 프라이머 도포단계;
규산질 분말로 이루어진 침투제 15 ∼ 25중량%, 슬래그로 이루어진 결합제 18 ∼ 23중량%, 탄산칼슘으로 이루어진 충진제 10 ∼ 15중량%, 무기칼슘염으로 이루어진 경화제 0.05 ∼ 0.3중량%, 세룰로오스로 이루어진 개선제 0.01 ∼ 0.05중량%, 폴리비닐아세테이트로 이루어진 방수제 0.5 ∼ 3중량%, 지방산 에스테르로 이루어진 발수제 0.5 ∼ 5중량%, 산화티타늄으로 이루어진 첨가제 0.5 ∼ 3중량%, 규사분말로 이루어진 강도증진제 40 ∼ 55중량%, 탄화수소계 폴리글리콜계로 이루어진 소포제 0.05 ∼ 3중량%, 멜라민계로 이루어진 분산제 0.1 ∼ 5중량%로 이루어진 속경성 폴리머 보수 몰탈을 제조하고, 상기 속경성 폴리머 보수 몰탈 87중량%에 물 13중량%를 혼합하여 염해방지용 침투식 방수제를 제조하는 염해방지용 침투식 방수제 제조단계;
상기 방청 프라이머를 도포한 표면에 염해방지용 침투식 방수제를 0.25㎏/㎡양으로 2 ∼ 5회, 1 ∼ 2.5mm두께로 도포하는 염해방지용 침투식 방수제 도포단계;
상기 염해방지용 침투식 방수제가 도포된 표면에 표면 보호제를 도포하는 표면보호제 도포단계;로 이루어진 것에 특징이 있는 염해방지용 침투식 방수제를 이용한 철근콘크리트 구조물 보수 보강공법.
A surface pretreatment step of chipping the deteriorated portion due to chemical corrosion, salt damage, east sea, etc. of the surface of the reinforced concrete structure;
Rebar rust removal step of removing the rust formed on the exposed reinforcement contained in the reinforced concrete structure;
A high pressure water washing step of washing the reinforced concrete structure including rebar exposed to high pressure water at a pressure of 100 to 150 kg / m 2;
Anti-corrosive primer applying step of applying the anti-rust primer to form a primer on the surface of the reinforced concrete structure and the exposed steel bar in the reinforced concrete structure after the high-pressure water washing step;
15 to 25% by weight penetrant made of siliceous powder, 18 to 23% by weight binder made of slag, 10 to 15% by weight filler made of calcium carbonate, 0.05 to 0.3% by weight hardener made of inorganic calcium salt, improver made of cellulose 0.01 to 0.05% by weight, 0.5 to 3% by weight of waterproofing agent made of polyvinylacetate, 0.5 to 5% by weight of water repellent consisting of fatty acid ester, 0.5 to 3% by weight of additive consisting of titanium oxide, 40 to 55% by weight of strength enhancer consisting of silica sand powder %, 0.05 to 3% by weight of a defoaming agent made of a hydrocarbon-based polyglycol-based, 0.1 to 5% by weight of a dispersant made of melamine-based, to prepare a fast curing polymer repair mortar, water 87% by weight of the fast curing polymer repair mortar 13% by weight A saltproofing penetration type waterproofing agent manufacturing step of mixing the saltproofing type penetration type waterproofing agent;
A salt-proofing penetration type waterproofing agent applying step of applying the salt-proofing penetration type waterproofing agent to the surface on which the rust-preventive primer is applied in an amount of 0.25 kg / m 2 2 to 5 times and 1 to 2.5mm thickness;
Surface protection agent coating step of applying a surface protector to the surface to which the salt-proof penetration-proof waterproofing agent is applied; Repairing reinforcement method of reinforced concrete structure using a salt-proof penetration-proof waterproofing, characterized in that consisting of.
The method of claim 1, wherein before the rust preventive primer is applied to the surface of the reinforced concrete structure to be applied to test the reinforced concrete structure repair reinforcement method using a salt-proof penetration type waterproofing agent.
The method according to claim 1 or 2, wherein if the surface of the reinforced concrete structure to be applied in the rust-preventing primer coating step has a large unevenness or rapid absorption, the coating thickness is increased by increasing the number of times, so that the coating thickness is 0.5 mm or more. Repair and reinforcement method of reinforced concrete structure using characteristic salt prevention penetration type waterproofing agent.
According to claim 1, After the application of the salt-proof penetration-proof waterproofing agent after the salt-proof penetration-proof waterproofing agent is applied, the salt-proofing penetration-proof waterproofing surface treatment step of removing the air bubble with a trowel and performing a surface treatment 2-3 times Reinforced concrete structure repair reinforcement method using a salt-proof penetration-proof waterproofing agent characterized in that it further comprises.
The method of claim 1, wherein the rust preventive primer in the anti-rust primer coating step is 35 to 49% by weight of polymer, 0.05 to 0.5% by weight of dispersant, 0.01 to 0.05% by weight of antifoaming agent, 0.05 to 1% by weight of preservative, 0.05 to 4% by weight of penetrant Reinforced concrete structure repair and reinforcement method using a penetration-proof waterproofing agent for preventing salt, characterized by consisting of 50 to 60% by weight of water.
According to claim 1, wherein the surface protector in the surface protective agent coating step 40 to 60% by weight of polymer, 0.05 to 0.3% by weight of dispersant, 2 to 10% by weight of plasticizer, 35 to 45% by weight of binder, 0.05 to 5% by weight of solvent , 0.01 to 1 wt% thickener, 0.02 to 0.09 wt% caustic soda, 0.001 to 0.5 wt% defoamer, 0.05 to 5 wt% preservative, 0.01 to 3 wt% color pigment, 0.07 to 5 wt% methylene chloride Repair reinforcement method of reinforced concrete structure using penetration type waterproofing agent to prevent salt damage.
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