KR102506554B1 - Quick-setting grout material with excellent injectability and durability - Google Patents
Quick-setting grout material with excellent injectability and durability Download PDFInfo
- Publication number
- KR102506554B1 KR102506554B1 KR1020220051139A KR20220051139A KR102506554B1 KR 102506554 B1 KR102506554 B1 KR 102506554B1 KR 1020220051139 A KR1020220051139 A KR 1020220051139A KR 20220051139 A KR20220051139 A KR 20220051139A KR 102506554 B1 KR102506554 B1 KR 102506554B1
- Authority
- KR
- South Korea
- Prior art keywords
- weight
- quick
- grout material
- setting
- durability
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims abstract description 146
- 239000011440 grout Substances 0.000 title claims abstract description 85
- 239000000843 powder Substances 0.000 claims abstract description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000013329 compounding Methods 0.000 claims abstract description 33
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 12
- 239000002562 thickening agent Substances 0.000 claims abstract description 12
- 229910052602 gypsum Inorganic materials 0.000 claims description 25
- 239000010440 gypsum Substances 0.000 claims description 25
- 238000002156 mixing Methods 0.000 claims description 24
- 239000000945 filler Substances 0.000 claims description 17
- 239000002893 slag Substances 0.000 claims description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 229910021487 silica fume Inorganic materials 0.000 claims description 3
- 230000008602 contraction Effects 0.000 abstract description 3
- 239000008030 superplasticizer Substances 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 description 22
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 19
- 230000000694 effects Effects 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 15
- 230000007774 longterm Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 15
- 238000011049 filling Methods 0.000 description 13
- 238000002347 injection Methods 0.000 description 13
- 239000007924 injection Substances 0.000 description 13
- 230000002787 reinforcement Effects 0.000 description 12
- 238000010276 construction Methods 0.000 description 11
- 239000004568 cement Substances 0.000 description 9
- 230000008439 repair process Effects 0.000 description 6
- 238000010998 test method Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 238000006703 hydration reaction Methods 0.000 description 5
- 230000001603 reducing effect Effects 0.000 description 5
- 230000002411 adverse Effects 0.000 description 4
- 230000036571 hydration Effects 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 235000019353 potassium silicate Nutrition 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 229910001653 ettringite Inorganic materials 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000011396 hydraulic cement Substances 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000011433 polymer cement mortar Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/10—Cements, e.g. Portland cement
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/14—Acids or salts thereof containing sulfur in the anion, e.g. sulfides
- C04B22/142—Sulfates
- C04B22/143—Calcium-sulfate
-
- 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
-
- 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
- C04B2103/0045—Polymers chosen for their physico-chemical characteristics
- C04B2103/0057—Polymers chosen for their physico-chemical characteristics added as redispersable powders
-
- 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
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0088—Compounds chosen for their latent hydraulic characteristics, e.g. pozzuolanes
-
- 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
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/34—Flow improvers
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/50—Defoamers, air detrainers
-
- 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
- C04B2103/56—Opacifiers
- C04B2103/58—Shrinkage reducing 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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
본 발명은, 비탈면보강, 지반보강, 터널그라우팅, 차수공사, 토목구조물 및 건축구조물의 시공, 보수에 사용되는 그라우트재에 관한 것이다. 더욱 상세하게는 마이크로시멘트와 급결재 미분말을 사용하여 그라우트재의 급결성을 향상시키되, 급결재 미분말로 CA계 급결재와 석고 미분말을 사용하여, 시공 초기의 강도가 높을 뿐만 아니라 유동성, 주입성, 충전성, 장기 강도, 부착강도 및 내구성이 우수한 급결 그라우트재에 관한 것이다. The present invention relates to a grout material used for slope reinforcement, ground reinforcement, tunnel grouting, water barrier work, construction and repair of civil structures and building structures. More specifically, the rapid setting of the grout material is improved by using microcement and the fine powder of the quick-setting material, but by using the CA-type quick-setting material and the fine gypsum powder as the quick-setting material, not only the strength at the beginning of construction is high, but also the fluidity, injectability, and filling It relates to a quick-setting grout material with excellent properties, long-term strength, adhesion strength, and durability.
그라우팅이란 주입재(그라우트재)를 지반 내부, 암반의 틈, 구조물의 공간 등에 주입하거나 충전하여, 지반의 공학적 성질을 향상시키거나 구조물의 강도, 내구성 등을 증진시키는 것을 말한다. Grouting refers to improving the engineering properties of the ground or enhancing the strength, durability, etc. of a structure by injecting or filling an injection material (grout material) into the ground, cracks in the rock mass, or space of the structure.
그라우팅의 활용도가 갈수록 다양화되어, 각종 구조물의 보수보강에 사용할 뿐만 아니라, 댐, 도로, 제방 등 지반구조물의 노후화에 따른 문제를 해결하는데에도 그라우팅이 사용되고 있으며, 지반 내부의 차수공사, 비탈면보강 공사, 터널 공사, 대심도 굴착공사 등 시공 난이도가 높은 공사에서 구조물의 강도저하, 지반 붕괴, 누수 등에 대처하기 위해 그라우팅이 사용되고 있다. The use of grouting is increasingly diversified, and it is used not only for repair and reinforcement of various structures, but also to solve problems caused by aging of geotechnical structures such as dams, roads, and embankments. Grouting is used to cope with structural strength deterioration, ground collapse, water leakage, etc.
종래의 그라우팅 공법으로, 물유리계 그라우팅 공법을 사용하였다. As a conventional grouting method, a water glass grouting method was used.
물유리계 그라우팅 공법은, 점도가 낮아 주입성이 매우 우수하고, 겔타임(그라우팅 후 유동성을 상실하고 고화(겔화)할 때까지의 소요시간)이 수초 내지 수분 이내로 겔타임을 조절하기가 쉬워 차수성이 우수하다는 장점이 있어 침투주입 그라우팅으로 자주 적용되었다. The water glass grouting method has excellent injectability due to its low viscosity, and the gel time (the time required for fluidity to be lost after grouting and solidification (gelation)) is within a few seconds or minutes, and it is easy to control the gel time. It has the advantage of being excellent, so it has been frequently applied as penetration injection grouting.
그러나 물유리계 그라우팅 공법은, 그라우팅 시공 후 시간이 경과함에 따라 수축되고 용탈현상이 발생하여 내구성이 저하되는 문제, 강한 알칼리성과 지속적인 용탈현상으로 주변 환경에 부정적 영향을 초래하는 문제가 있었다. However, the water glass grouting method has problems in that durability deteriorates due to shrinkage and leaching over time after grouting, and negative effects on the surrounding environment due to strong alkalinity and continuous leaching.
다른 그라우팅 공법으로 시멘트계를 주성분으로 하는 공법이 있는데, 물유리계 그라우팅 공법에 비해 장기적인 내구성 저하가 적고, 환경에의 악영향이 적으며, 시공 난이도가 낮다는 장점이 있으나, 입도와 입경의 한계로 적용범위에 제한이 있고, 급결성이 떨어져 차수효과가 미흡하다는 문제가 있었다. As another grouting method, there is a method that uses cement-based grouting as its main component. Compared to the water-glass grouting method, it has the advantages of less long-term durability degradation, less adverse impact on the environment, and lower construction difficulty. There was a problem in that there was a limit to, and the ordering effect was insufficient due to poor rapid crystallization.
따라서 시멘트계 그라우트재를 적용함으로써 친환경적이고, 장기적인 내구성 저하가 적은 재료를 개발하되, 시멘트계 그라우트재의 단점을 극복할 수 있는 그라우트재의 개발이 필요하였다. Therefore, it was necessary to develop a grout material capable of overcoming the disadvantages of the cement-based grout material while developing an eco-friendly material with low long-term durability degradation by applying the cement-based grout material.
즉, 시멘트계 그라우트재를 채택하면서 급결성이 좋아 차수성능이 우수하고, 장기적인 내구성 저하가 적으며, 주입성, 유동성, 충전성, 휨강도, 지반 및 구조물과의 부착강도가 우수한 그라우트재의 개발이 요구되었다.In other words, while adopting a cement-based grout material, it is required to develop a grout material with excellent water-blocking performance due to good quick-setting, low long-term durability degradation, excellent injectability, fluidity, fillability, flexural strength, and adhesion strength to the ground and structures. .
본 발명은, 위와 같은 종래의 문제점을 개선하기 위해, 친환경적이고, 장기적인 내구성 저하가 적은 급결 그라우트재를 제공하는 것을 목적으로 한다. An object of the present invention is to provide a quick-setting grout material that is environmentally friendly and has little degradation in long-term durability in order to improve the above conventional problems.
본 발명은, 급결성, 차수성, 주입성, 유동성, 자기충전성, 휨강도, 지반 및 구조물과의 부착강도가 우수한 급결 그라우트재를 제공하는 것을 목적으로 한다. An object of the present invention is to provide a quick-setting grout material excellent in quick-setting property, water-repellent property, injectability, fluidity, self-filling property, flexural strength, and adhesion strength to the ground and structures.
본 발명은, 급결재를 사용하면서 타설 초기뿐만 아니라 장기적으로 발생하는 수축에 대해 효율적으로 보상할 수 있는 급결 그라우트재를 제공하는 것을 목적으로 한다. An object of the present invention is to provide a quick-setting grout material that can efficiently compensate for shrinkage that occurs not only in the initial stage of casting but also in the long term while using the quick-settling material.
본 발명은, 비탈면보강, 지반보강, 터널그라우팅, 차수공사, 토목구조물 및 건축구조물의 시공, 보수에 효과적으로 사용될 수 있는 급결 그라우트재를 제공하는 것을 목적으로 한다. An object of the present invention is to provide a quick-setting grout material that can be effectively used for slope reinforcement, ground reinforcement, tunnel grouting, water barrier work, construction and repair of civil structures and building structures.
본 발명에서는, 그라우팅에 사용하는 급결 그라우트재에 있어서, 상기 급결 그라우트재는 배합재료와 배합수를 포함하되, 상기 배합재료는, 마이크로시멘트; 포졸란 미분말; 급결재 미분말; 고성능감수제; 소포제; 증점제를 포함하는 주입성 및 내구성이 우수한 급결 그라우트재를 제공한다.In the present invention, in the quick-setting grout material used for grouting, the quick-setting grout material includes a compounding material and a compounding water, wherein the compounding material includes: microcement; pozzolan fine powder; Fine powder of quick-setting material; superplasticizer; antifoam; A quick-setting grout material containing a thickener and having excellent injectability and durability is provided.
상기 배합재료는, 수축저감제; 재유화형 분말수지; 고성능유동화제를 더 포함한다. The blending material may include a shrinkage reducing agent; re-emulsifying powder resin; It further contains a high-performance plasticizing agent.
상기 배합재료는, 마이크로시멘트 48~59 중량%; 포졸란 미분말 14~24 중량%; 급결재 미분말 5~14 중량%; 수축저감제 2.6~4.2 중량%; 재유화형 분말수지 11~18 중량%; 고성능감수제 0.4~1.8 중량%; 소포제 0.1~0.2 중량%; 증점제 0.1~0.5 중량%; 고성능유동화제 0.5~2 중량%를 포함한다. The blending material is 48 to 59% by weight of microcement; 14 to 24% by weight of pozzolan fine powder; 5 to 14% by weight of a fine powder of a quick-settling agent; Shrinkage reducing agent 2.6 ~ 4.2% by weight; 11-18% by weight of re-emulsifying powdered resin; 0.4 to 1.8% by weight of a high-performance water reducing agent; 0.1 to 0.2% by weight of an antifoaming agent; 0.1 to 0.5% by weight of a thickener; It contains 0.5 to 2% by weight of a high-performance plasticizing agent.
상기 급결재 미분말은 CA계 급결재 66~90중량%, 석고 미분말 10~34중량%를 포함한다. The fine powder of the quick filler includes 66 to 90% by weight of the CA-based quick filler and 10 to 34% by weight of the fine gypsum powder.
상기 CA계 급결재는, CaO 38~49중량%, Al2O3 23~40중량%, SO3 16~29 중량%, SiO2 3~6중량%, MgO 1.6~3중량%, Fe2O3 1.2~2 중량%를 포함한다. The CA-based quick-setting material is CaO 38-49% by weight, Al 2 O 3 23-40% by weight, SO 3 16-29% by weight, SiO 2 3-6% by weight, MgO 1.6-3% by weight, Fe 2 O 3 1.2 to 2% by weight.
상기 마이크로시멘트의 분말도는 6,500~8,000cm2/g인 것을 특징으로 한다. The fineness of the microcement is 6,500 to 8,000 cm 2 /g.
상기 급결재 미분말의 분말도는 6,500~9,000cm2/g 인 것을 특징으로 한다. It is characterized in that the fineness of the fine powder of the quick filler is 6,500 to 9,000 cm 2 /g.
상기 포졸란 미분말은 천연 포졸란, 고로슬래그 미분말, 플라이애시, 실리카 퓸 중 적어도 어느 하나이고, 상기 포졸란 미분말의 분말도는 6,000~8,000cm2/g인 것을 특징으로 한다. The fine pozzolan powder is at least one of natural pozzolan, blast furnace slag powder, fly ash, and silica fume, and the fineness of the pozzolan fine powder is 6,000 to 8,000 cm 2 /g.
상기 급결 그라우트재는, 상기 배합재료 100중량부를 기준으로 배합수 32~52중량부를 포함한다. The quick-setting grout material includes 32 to 52 parts by weight of mixing water based on 100 parts by weight of the mixing material.
본 발명에 따른 주입성 및 내구성이 우수한 급결 그라우트재는 아래와 같은 효과를 가진다. The quick-setting grout material having excellent injectability and durability according to the present invention has the following effects.
첫째, 본 발명의 급결 그라우트재는, 친환경적인 그라우팅 공사를 가능하게 하고, 그라우팅 후 시간 경과에 따른 내구성 저하가 적다. First, the quick-setting grout material of the present invention enables environmentally friendly grouting work, and there is little durability degradation over time after grouting.
둘째, 본 발명의 급결 그라우트재는, 급결성이 우수하여, 차수공사에 적용할 경우 높은 차수성능을 발휘할 수 있고, 지하수에 의한 그라우트재의 유실 발생을 최소화할 수 있다. Second, the quick-setting grout material of the present invention has excellent quick-setting properties, so when applied to water-blocking construction, it can exhibit high water-blocking performance and can minimize loss of grout material due to groundwater.
셋째, 본 발명의 급결 그라우트재는, 주입성, 유동성, 자기충전성이 우수하여, 높은 주입압력을 필요로 하지 않고, 하향 경사로 공사하는 경우 주입압력 없이 자연적인 흐름에 의해 밀실한 충전이 가능하다. Third, the quick-setting grout material of the present invention has excellent injectability, fluidity, and self-filling, so that it does not require high injection pressure and can be tightly filled by natural flow without injection pressure when constructing on a downward slope.
넷째, 본 발명의 급결 그라우트재는, 휨강도, 지반 및 구조물과의 부착강도가 우수하여, 비탈면보강, 지반보강, 차수벽 시공, 터널공사 등에 그라우팅하면, 공사 후 안정성과 내구성이 높은 구조물을 얻을 수 있다. Fourth, the quick-setting grout material of the present invention has excellent flexural strength and adhesion strength with the ground and structures, so that when grouting is performed for slope reinforcement, ground reinforcement, water barrier construction, tunnel construction, etc., a structure with high stability and durability after construction can be obtained.
다섯째, 본 발명의 급결재 미분말은, CA계 급결재와 석고 미분말을 혼합하여 사용한다. CA계 급결재에 의해 그라우트재의 초기 급결성을 확실하게 확보하면서, 이와 유기적으로 결합된 석고 분말에 의해 장기적인 강도와 내구성을 확보할 수 있다. 이때 CA계 급결재와 석고 미분말의 양을 조절함으로써 필요로 하는 겔타임을 조절할 수 있다.Fifth, the fine powder of the quick-filling material of the present invention is used by mixing the CA-based quick-filling material and the fine gypsum powder. It is possible to secure long-term strength and durability by the gypsum powder organically combined with the grout material while reliably securing the initial quick-setting property of the grout material by the CA-based quick-setting material. At this time, the required gel time can be adjusted by adjusting the amount of the CA-based filler and the fine gypsum powder.
여섯째, 본 발명의 급결 그라우트재는, 급결재를 사용하면서도 수축에 대해 충분한 보상이 이루어져 균열 및 차수성능 저하가 최소화된다. Sixth, in the quick-setting grout material of the present invention, sufficient compensation is made for shrinkage while using the quick-setting material, so that cracking and deterioration in water barrier performance are minimized.
아래에서는 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 쉽게 실시할 수 있도록 본 발명의 실시예를 상세히 설명한다. 그러나 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며 여기에서 설명하는 실시예에 한정되지 않는다. 명세서 전체에서, 어떤 부분이 어떤 구성요소를 "포함"한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 포함할 수 있는 것을 의미한다. Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice them. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Throughout the specification, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated.
본 발명은, 비탈면보강, 지반보강, 차수공사, 토목구조물 및 건축구조물의 시공, 보수에 사용되는 그라우트재에 관한 것으로, 구체적으로는 초기 급결성 뿐만 아니라 장기적인 강도와 내구성이 우수한 급결 그라우트재에 관한 것이다. The present invention relates to a grout material used for slope reinforcement, ground reinforcement, water barrier construction, construction and repair of civil engineering structures and building structures, and specifically, to a quick-setting grout material with excellent long-term strength and durability as well as initial quick-setting property. will be.
본 발명의 급결 그라우트재는 배합재료에 배합수를 혼합하여 제조하되, 배합재료 100중량부를 기준으로 배합수 32~52중량부를 혼합하여 제조한다. The quick-setting grout material of the present invention is prepared by mixing the compounding water with the compounding material, but is prepared by mixing 32 to 52 parts by weight of the compounding water based on 100 parts by weight of the compounding material.
상기 배합재료는 마이크로시멘트; 포졸란 미분말; 급결재 미분말; 수축저감제; 재유화형 분말수지; 고성능감수제; 소포제; 증점제; 고성능유동화제를 포함한다. The blending material is microcement; pozzolan fine powder; Fine powder of quick-setting material; contraction reducing agents; re-emulsifying powder resin; superplasticizer; antifoam; thickening agent; Contains a high-performance glidant.
구체적으로, 본 발명의 배합재료는, 마이크로시멘트 48~59 중량%; 포졸란 미분말 14~24 중량%; 급결재 미분말 5~14 중량%; 수축저감제 2.6~4.2 중량%; 재유화형 분말수지 11~18 중량%; 고성능감수제 0.4~1.8 중량%; 소포제 0.1~0.2 중량%; 증점제 0.1~0.5 중량%; 고성능유동화제 0.5~2 중량%를 포함한다. 배합재료에 포함되는 상기 구성들은 배합재료에 포함되는 전체 구성들과 서로 유기적으로 맞물려 작용하게 되고, 각 구성의 조성비는 다른 구성들과의 결합관계를 고려하여 결정된 것이다. 아래에서 상기 구성들에 대해 자세히 설명한다.Specifically, the compounding material of the present invention, 48 to 59% by weight of microcement; 14 to 24% by weight of pozzolan fine powder; 5 to 14% by weight of a fine powder of a quick-settling agent; Shrinkage reducing agent 2.6 ~ 4.2% by weight; 11-18% by weight of re-emulsifying powdered resin; 0.4 to 1.8% by weight of a high-performance water reducing agent; 0.1 to 0.2% by weight of an antifoaming agent; 0.1 to 0.5% by weight of a thickener; It contains 0.5 to 2% by weight of a high-performance plasticizing agent. The components included in the compounding material work organically with all the components included in the compounding material, and the composition ratio of each component is determined in consideration of the coupling relationship with other components. The configurations are described in detail below.
시멘트는, 시멘트계 그라우트재를 형성하는 기본적인 재료로서, 본 발명에서는 높은 물시멘트비에서 속경성을 확보하기 위해 마이크로시멘트를 사용하고, 그 분말도(비표면적)는 6,500~8,000cm2/g이 바람직하다. 본 발명의 전체 배합재료 결합관계 내에서 위와 같은 수치범위의 분말도에서 그라우트재의 주입성, 급결성을 확보할 수 있다.Cement is a basic material for forming a cement-based grout material, and in the present invention, microcement is used to secure fast hardening at a high water-cement ratio, and its fineness (specific surface area) is preferably 6,500 to 8,000 cm 2 /g. . It is possible to secure the injectability and rapid setting of the grout material at the powder degree within the above numerical range within the entire blending material bonding relationship of the present invention.
본 발명의 마이크로시멘트 조성비는, 배합재료에 포함되는 전체 구성들과 유기적으로 작용하게 되고, 마이크로시멘트의 조성비는 다른 구성들과의 결합관계를 고려하여 결정한다. The composition ratio of microcement of the present invention works organically with all constituents included in the compounding material, and the composition ratio of microcement is determined in consideration of the bonding relationship with other constituents.
본 발명의 급결 그라우트재의 배합재료의 전체 조성비에서, 마이크로시멘트의 양을 48중량% 미만으로 사용할 경우 그라우트 내부 조직 간의 결합력이 약해 강도 및 내구성이 저하될 수 있고, 59중량%를 초과해서 사용할 경우 수화열에 의한 균열이 발생할 수 있고, 수축저감제에 의한 수축보상 효과가 부족할 수 있다. In the total composition ratio of the compounding materials of the quick-setting grout material of the present invention, when the amount of microcement is used at less than 48% by weight, the strength and durability may be lowered due to the weakening bonding force between the internal structures of the grout, and when it is used in excess of 59% by weight, heat of hydration Cracks may occur due to, and the shrinkage compensation effect by the shrinkage reducing agent may be insufficient.
본 발명에서 사용하는 포졸란 미분말은 천연 포졸란, 고로슬래그 미분말, 플라이애시, 실리카 퓸 중 적어도 어느 하나를 사용할 수 있다. As the fine powder of pozzolan used in the present invention, at least one of natural pozzolan, fine powder of blast furnace slag, fly ash, and silica fume may be used.
포졸란 물질은 수화열을 감소시키고, 장기적으로 발현되는 잠재수경성에 의해 그라우트재 내부의 조직을 치밀하게 형성시켜, 장기강도, 내구성, 수밀성, 내부식성 및 내화학성 등을 향상시키며, 마이크로시멘트를 대체하는 만큼 이산화탄소 배출을 저감시키는 등의 효과를 발휘한다. The pozzolanic material reduces heat of hydration, forms a dense structure inside the grout material by long-term latent hydraulic properties, improves long-term strength, durability, watertightness, corrosion resistance and chemical resistance, and replaces microcement as much as possible. It has the effect of reducing carbon dioxide emissions.
본 발명의 포졸란 미분말 조성비는, 배합재료에 포함되는 전체 구성들과 유기적으로 작용하게 되고, 포졸란 미분말의 조성비는 다른 구성들과의 결합관계를 고려하여 결정한다. The composition ratio of the fine pozzolan powder of the present invention works organically with all components included in the compounding material, and the composition ratio of the fine pozzolan powder is determined in consideration of the bonding relationship with other components.
본 발명의 급결 그라우트재 배합재료의 전체 조성비에서 포졸란 미분말의 양을 14~24중량%를 포함한다. 포졸란 미분말의 양을 14중량% 미만으로 사용할 경우, 위와 같은 포졸란 물질에 의한 효과를 충분하게 얻기 어렵다. The amount of pozzolan fine powder in the total composition ratio of the quick-setting grout material compounding material of the present invention includes 14 to 24% by weight. When the amount of the pozzolan fine powder is used at less than 14% by weight, it is difficult to sufficiently obtain the effect of the pozzolan material as described above.
따라서 본 발명의 배합재료 전체 조성비에서 포졸란 미분말의 양을 14중량% 이상으로 하는 것이 바람직한데, 다만, 포졸란 물질이 과다하게 포함될 경우, 포졸란 물질에 의해 초기 강도가 부족할 수 있고, 단위수량이 증가하며, 건조수축이 발생하는 문제가 발생할 수 있으므로, 본 발명에서는 수축저감제를 2.6~4.2중량% 포함하면서, 포졸란 미분말의 양을 24중량% 이내로 함으로써 포졸란에 의한 효과를 극대화하면서, 포졸란에 의해 발생할 수 있는 건조수축을 방지하도록 한다. Therefore, it is preferable to set the amount of fine pozzolan powder to 14% by weight or more in the total composition ratio of the compounding material of the present invention. However, if the pozzolanic material is excessively included, the initial strength may be insufficient due to the pozzolanic material, and the unit quantity increases , Since the problem of drying shrinkage may occur, in the present invention, while maximizing the effect of pozzolan by including 2.6 to 4.2% by weight of the shrinkage reducing agent and setting the amount of the pozzolan fine powder within 24% by weight, it may occur due to pozzolan. to prevent drying shrinkage.
포졸란 미분말의 분말도가 클수록 주입성, 충전성이 향상되고, 블리딩률, 수화열이 감소하는데, 본 발명에서는 이러한 성질을 고려하여 포졸란 미분말의 분말도는 6,000 ~ 8,000 cm2/g로 하는 것이 바람직하다.As the fineness of the fine pozzolan powder increases, the injectability and filling properties improve, and the bleeding rate and heat of hydration decrease. .
포졸란 미분말의 분말도가 6,000cm2/g 미만일 경우, 포졸란에 의한 효과가 부족할 수 있고, 포졸란 미분말의 분말도가 8,000cm2/g 초과할 경우, 효과 대비 비용이 지나치게 상승하게 되므로 8,000cm2/g 이하가 바람직하다. If the fineness of the pozzolan fine powder is less than 6,000 cm 2 /g, the effect of pozzolan may be insufficient, and if the fineness of the pozzolan fine powder exceeds 8,000 cm 2 /g, the cost compared to the effect is excessively increased. g or less is preferred.
본 발명에서는 그라우트재의 급결성을 향상시키기 위해, 급결재 미분말을 사용한다. 본 발명의 급결재 미분말 조성비는, 배합재료에 포함되는 전체 구성들과 유기적으로 작용하게 되고, 급결재 미분말의 조성비는 다른 구성들과의 결합관계를 고려하여 결정한다. In the present invention, in order to improve the rapid setting of the grout material, fine powder of the quick setting material is used. The composition ratio of the fine powder of the quick filler of the present invention works organically with all the components included in the compounding material, and the composition ratio of the fine powder of the quick filler is determined in consideration of the bonding relationship with the other components.
본 발명의 급결 그라우트재 배합재료의 전체 조성비에서 급결재 미분말의 양을 5~14중량%를 포함한다. 급결재 미분말의 양을 5중량% 미만으로 사용할 경우, 본 발명에서 의도하는 급결성능을 확보하기 어렵고, 14중량%를 초과하게 되면, 과도한 응결 및 균열 발생의 문제가 발생할 수 있다. The amount of the fine powder of the quick-setting grout material in the total composition ratio of the quick-setting grout material of the present invention includes 5 to 14% by weight. When the amount of the fine powder of the quick-setting agent is used at less than 5% by weight, it is difficult to secure the quick-setting performance intended in the present invention, and when it exceeds 14% by weight, problems of excessive condensation and cracking may occur.
다만 본 발명의 급결재 미분말은 각각의 특성을 지니는 두 가지를 혼합하여 사용하는데, CA(calcium aluminate)계 급결재와 석고 미분말을 혼합하여 사용하면서 그 혼합비율은 CA계 급결재 66~90중량%, 석고 미분말 10~34중량%로 혼합하여, 초기 급결성, 장기 강도, 내구성 등을 충분히 확보할 수 있도록 한다. However, the fine powder of the quick filler of the present invention is used by mixing two types having respective characteristics. CA (calcium aluminate)-based filler and fine gypsum powder are mixed and used, and the mixing ratio is 66 to 90% by weight of the CA-based filler , 10 to 34% by weight of fine gypsum powder is mixed to ensure sufficient initial rapid setting, long-term strength, and durability.
CA계 급결재에 의해 초기 급결성을 확실하게 확보하면서, 이와 유기적으로 결합된 석고 미분말에 의해 초기 급결성에 더하여 장기적인 강도를 보장할 수 있다. While reliably securing the initial quick-setting by the CA-based quick-setting material, long-term strength can be guaranteed in addition to the initial quick-setting by the fine gypsum powder organically combined therewith.
CA계 급결재 66~90중량%, 석고 미분말 10~34중량%를 혼합하는 것이 바람직하고, 상기 조성비의 범위 내에서 CA계 급결재의 양과 석고 미분말의 양을 조절함으로써 필요로 하는 겔타임을 조절할 수 있다.It is preferable to mix 66 to 90% by weight of CA-based filler and 10 to 34% by weight of fine gypsum powder, and adjust the required gel time by adjusting the amount of CA-based filler and fine gypsum powder within the range of the composition ratio. can
전체 배합재료에서 석고 미분말의 사용량이 상기 비율보다 적으면 장기 강도 발현성이 부족할 수 있고, 석고 미분말의 사용량이 34중량%를 초과하면, CA계 급결재의 양이 부족하여 본 발명에서 목표로 하는 초기 응결이 부족할 수 있다. If the amount of fine gypsum powder used in the total mixture is less than the above ratio, long-term strength development may be insufficient, and if the amount of fine gypsum powder exceeds 34% by weight, the amount of CA-based filler is insufficient, which is the target of the present invention Initial condensation may be insufficient.
본 발명은 포졸란 미분말을 사용하면서 급결재로 석고 미분말을 포함하여 사용하는데, 포졸란 미분말과 석고가 함께 작용함으로써 강도 개선, 수화열 감소 등의 효과를 얻을 수 있다.In the present invention, the fine pozzolan powder is used and the fine gypsum powder is used as an accelerator, and the fine pozzolan powder and the gypsum work together to obtain effects such as strength improvement and heat of hydration reduction.
아울러, 석고는 그라우트재 내에서 물과 반응하여 수산화칼슘을 생성하면서 일정부분 팽창반응을 일으킨다. 석고의 팽창반응은 물과 만나서 무기물질을 생성하는 과정에서 나타나는데, 그라우트재 내에서 무기물질이 주입 초기에 생성됨으로써 건조수축 및 경화수축에 의한 체적의 감소를 보상하게 된다. In addition, gypsum reacts with water in the grout material to generate calcium hydroxide, causing a partial expansion reaction. The expansion reaction of gypsum occurs in the process of generating inorganic substances in contact with water. In the grout material, inorganic substances are formed at the initial stage of injection, thereby compensating for volume reduction due to drying shrinkage and curing shrinkage.
다만 석고 미분말은 CA계 급결재에 비해서는 초기 급결성이 떨어지므로 본 발명에서는 위와 같은 비율로 사용함으로써 초기 급결성 뿐만 아니라 장기 강도, 내구성도 향상시키도록 한다. However, since fine gypsum powder has poor initial quick-setting properties compared to CA-based quick-setting materials, in the present invention, it is used in the above ratio to improve not only initial quick-setting properties but also long-term strength and durability.
본 발명에서 사용하는 석고는 무수석고, 반수석고 및 이수석고 중 어느 하나를 사용할 수 있고, 이들 2종 이상을 혼합하여 사용할 수도 있다. 다만, 급결성 및 강도 측면에서 무수석고를 사용하는 것이 바람직하다.As the gypsum used in the present invention, any one of anhydrite, hemihydrate gypsum and dihydrate gypsum may be used, and two or more of these may be mixed and used. However, it is preferable to use anhydrite in terms of rapid setting and strength.
급결재의 분말도는 다른 재료들과의 혼합 정도, 반응성, 급결성, 경제성 등으로 고려하여 결정하는데, 6,500~9,000cm2/g이 바람직하다. 분말도 6,500cm2/g 이하에서는 본 발명에서 목표로 하는 급결성, 조기강도에 미치지 못할 수 있고, 9,000cm2/g을 초과하게 되면 효과 대비 경제성이 떨어지게 된다. The fineness of the quick-settling material is determined by considering the degree of mixing with other materials, reactivity, rapid setting, economic feasibility, etc., and is preferably 6,500 to 9,000 cm 2 /g. If the fineness is 6,500 cm 2 /g or less, the rapid setting and early strength targeted in the present invention may not be reached, and if the powder size exceeds 9,000 cm 2 /g, the effect and economic feasibility decrease.
본 발명에서 사용하는 CA(calcium aluminate)계 급결재는, CaO 38~49중량%, Al2O3 23~40중량%, SO3 16~29 중량%, SiO2 3~6중량%, MgO 1.6~3중량%, Fe2O3 1.2~2 중량%를 포함한다.CA (calcium aluminate)-based filler used in the present invention, CaO 38 ~ 49% by weight, Al 2 O 3 23 ~ 40% by weight, SO 3 16 ~ 29% by weight, SiO 2 3 ~ 6% by weight, MgO 1.6 ~ 3% by weight, Fe 2 O 3 1.2 ~ 2% by weight.
CaO가 38중량% 미만일 경우 에트린가이트 생성이 부족하여 경화속도가 늦어지고, Al2O3 23중량% 미만일 경우, 급결성이 저하되고, 초기 강도가 저하되며, 에트린가이트 생성이 감소하여 체적이 감소하는 문제가 발생할 수 있다. SO3 성분이 29중량%를 초과하면 팽창량이 과도해질 우려가 있다. When CaO is less than 38% by weight, ettringite production is insufficient and the curing speed is slowed down, and when Al 2 O 3 is less than 23% by weight, rapid hardening property is lowered, initial strength is lowered, and ettringite production is reduced, resulting in volume This reduction may cause problems. When the SO 3 component exceeds 29% by weight, there is a possibility that the expansion amount may be excessive.
그라우팅 후 그라우트재의 수축이 발생하게 되면, 수축에 의한 균열이 발생하게 되고, 이러한 균열에 의해 차수성, 내구성이 저하되는 문제가 발생할 수 있으므로, 본 발명에서는, 전체 배합재료와의 유기적인 작용에 의해 그라우트재의 수축을 충분히 보상할 수 있도록 하기 위해 수축저감제, 고성능감수제, 고성능유동화제를 포함하여, 수축문제를 해결한다. If shrinkage of the grout material occurs after grouting, cracks due to shrinkage may occur, and such cracks may cause a problem of deterioration in water repellency and durability. In order to sufficiently compensate for the shrinkage of the grout material, the shrinkage problem is solved by including a shrinkage reducing agent, a high performance water reducing agent, and a high performance fluidizing agent.
본 발명에서는, 그라우트재의 건조수축을 감소시키고, 본 발명의 마이크로시멘트, 포졸란 미분말에 의한 단위수량 증가를 저감시키기 위해 수축저감제를 사용한다. In the present invention, a shrinkage reducing agent is used to reduce drying shrinkage of the grout material and to reduce unit water increase due to the microcement and pozzolan fine powder of the present invention.
수축저감제의 양은 그라우트재 반죽의 주입성, 유동성 등을 고려할 뿐만 아니라 상기 석고 미분말의 팽창효과와 다른 재료를 모두 고려하여 결정한다. 본 발명의 급결 그라우트재 배합재료의 전체 조성비에서 수축저감제의 양을 2.6~4.2중량%를 포함한다. The amount of the shrinkage reducing agent is determined by considering both the expansion effect of the fine gypsum powder and other materials as well as the injectability and fluidity of the grout material dough. The amount of the shrinkage reducing agent in the total composition ratio of the quick-setting grout material compounding material of the present invention includes 2.6 to 4.2% by weight.
수축저감제의 양을 2.6중량% 미만으로 사용할 경우, 위와 같은 효과가 충분하지 못할 수 있고, 수축저감제 4.2중량%를 초과하게 되면, 불필요하게 비용이 상승할 뿐만 아니라, 굳지 않은 그라우트재의 유동성이 저하될 우려가 있다. If the amount of the shrinkage reducing agent is less than 2.6% by weight, the above effect may not be sufficient, and if the amount of the shrinkage reducing agent exceeds 4.2% by weight, not only does the cost unnecessarily increase, but also the flowability of the unhardened grout material is poor. There is a risk of deterioration.
본 발명에서는 재유화형 분말수지를 혼합하여, 그라우트재의 내부에 필름을 형성하여 조직을 치밀하게 하고, 휨강도, 부착강도를 향상시키며, 보수성이 개선되도록 하여 중성화, 염화물 침투, 동결융해 등에 대한 내구성을 향상시킬 수 있다. In the present invention, a re-emulsifying powder resin is mixed to form a film inside the grout material to make the structure dense, improve flexural strength and adhesion strength, and improve water retention to improve durability against neutralization, chloride penetration, freeze-thaw, etc. can make it
재유화형 분말수지는 마이크로시멘트와 미리 고르게 혼합하여 사용하는 것이 바람직하다. 미리 혼합함으로써, 분말수지가 균일하게 분산하여 작용하도록 하여 그라우트재 전체의 내구성, 부착강도, 압축강도 등을 고르게 향상시킬 수 있다. It is preferable to use the re-emulsifying powder resin after mixing it evenly with the microcement in advance. By mixing in advance, the powdered resin can be uniformly dispersed and acted so that the durability, adhesion strength, compressive strength, etc. of the entire grout material can be uniformly improved.
본 발명의 급결 그라우트재 배합재료의 전체 조성비에서 재유화형 분말수지 11~18중량%를 포함한다. The quick-setting grout material of the present invention contains 11 to 18% by weight of the re-emulsifying powder resin in the total composition ratio.
재유화형 분말수지의 양을 11중량% 미만으로 사용할 경우, 내구성이나 부착강도의 발현이 불충분할 수 있고, 재유화형 분말수지의 양이 18중량%를 초과하게 되면, 불필요하게 비용이 상승할 뿐만 아니라, 굳지 않은 그라우트재의 유동성, 자기충전성이 저하될 우려가 있다. When the amount of re-emulsification type powder resin is used at less than 11% by weight, expression of durability or adhesive strength may be insufficient, and when the amount of re-emulsification type powder resin exceeds 18% by weight, not only costs increase unnecessarily, but also , there is a risk that the fluidity and self-filling properties of the unhardened grout material may deteriorate.
본 발명에서는 단위수량을 감소하기 위해 고성능감수제를 사용하고, 본 발명의 급결 그라우트재 배합재료의 전체 조성비에서 고성능감수제의 양을 0.4~1.8 중량%를 포함한다. 고성능감수제의 양을 0.4중량% 미만으로 사용할 경우, 감수효과가 부족하고, 양호한 유동성을 얻기 어려우며, 고성능감수제 1.8중량%를 초과하게 되면, 강도 저하 문제가 발생할 수 있다. In the present invention, a high-performance water reducing agent is used to reduce the unit water quantity, and the amount of the high-performance water reducing agent is included in an amount of 0.4 to 1.8% by weight in the total composition ratio of the quick-setting grout material compounding material of the present invention. When the amount of the high-performance water reducing agent is used at less than 0.4% by weight, the water reducing effect is insufficient and it is difficult to obtain good fluidity.
소포제는 마이크로시멘트, 포졸란 미분말, 재유화형 분말수지 등을 혼합할 때 연행될 수 있는 기포를 감소시키고 그라우트재의 압축강도, 휨강도 저하를 방지하기 위해 사용한다. Antifoaming agents are used to reduce bubbles that may be entrained when mixing micro cement, fine pozzolan powder, and re-emulsifying powder resin, and to prevent deterioration in compressive strength and flexural strength of grout materials.
본 발명의 급결 그라우트재 배합재료의 전체 조성비에서 소포제의 양을 0.1~0.2중량%를 포함한다. 소포제의 양을 0.1중량% 미만으로 사용할 경우, 기포 감소 효과가 충분하지 못하고, 소포제 0.2중량%를 초과하게 되면, 강도와 내구성에 악영향을 미칠 수 있다. 0.1 to 0.2% by weight of the antifoaming agent in the total composition ratio of the quick-setting grout material compounding material of the present invention. When the amount of the antifoaming agent is less than 0.1% by weight, the foam reducing effect is not sufficient, and when the amount of the antifoaming agent exceeds 0.2% by weight, strength and durability may be adversely affected.
증점제는 그라우트재의 점성을 증가시키는 혼화제로 다른 구성들과 혼합하여 재료분리 저항성을 높이고, 그라우트재의 내구성을 향상시키기 위해 사용한다. The thickener is an admixture that increases the viscosity of the grout material and is used to increase material separation resistance and improve durability of the grout material by mixing with other components.
본 발명의 급결 그라우트재 배합재료의 전체 조성비에서 증점제의 양을 0.1~0.5중량%를 포함한다. 증점제의 양을 0.1중량% 미만으로 사용할 경우, 점성 증가 효과가 충분하지 못하고, 증점제 0.5중량%를 초과하게 되면, 점성이 과도하여 유동성, 충전성에 악영향을 줄 수 있다. 0.1 to 0.5% by weight of the thickener is included in the total composition ratio of the quick-setting grout material compounding material of the present invention. When the amount of the thickener is used at less than 0.1% by weight, the effect of increasing the viscosity is not sufficient, and when the amount of the thickener exceeds 0.5% by weight, the viscosity is excessive, which may adversely affect flowability and filling properties.
본 발명에서는, 그라우트재에 유동성과 감수 기능을 부여하기 위해 고성능유동화제를 사용한다. 고성능유동화제는 분산작용에 의해 단위수량을 감소시키고, 적은 배합수로도 유동성이 향상되도록 하여 그라우트재의 내구성과 강도를 증진시킨다. In the present invention, a high-performance fluidizer is used to impart fluidity and water-reducing function to the grout material. The high-performance fluidizer reduces the unit quantity by dispersing action and enhances the durability and strength of the grout material by improving fluidity even with a small number of blends.
본 발명의 급결 그라우트재 배합재료의 전체 조성비에서 고성능유동화제의 양을 0.5~2중량%를 포함한다. 고성능유동화제의 양을 0.5중량% 미만으로 사용할 경우, 유동성 증대 및 감수효과가 부족하고, 고성능유동화제가 2중량%를 초과하게 되면, 강도 저하가 발생할 수 있다. 0.5 to 2% by weight of the high-performance fluidizer in the total composition ratio of the quick-setting grout material compounding material of the present invention. When the amount of the high-performance fluidizing agent is used in an amount of less than 0.5% by weight, the fluidity enhancement and water reducing effect are insufficient, and when the high-performance fluidizing agent exceeds 2% by weight, a decrease in strength may occur.
위에서 설명한 비율에 따라 배합재료가 혼합, 제조될 수 있고, 본 발명의 급결 그라우트재는 상기 배합재료에 배합수를 혼합하여 제조하되, 배합재료 100중량부를 기준으로 배합수 32~52중량부를 혼합하여 제조한다. The compounding materials may be mixed and prepared according to the ratio described above, and the quick-setting grout material of the present invention is prepared by mixing the compounding material with the compounding water, but is prepared by mixing 32 to 52 parts by weight of the compounding water based on 100 parts by weight of the compounding material. do.
배합수는 그라우트재를 비비고, 주입할 때 필요로 하는 유동성을 부여하고, 마이크로시멘트와의 수화반응을 위해 사용한다. Mixing water is used to rub the grout material, provide fluidity required for injection, and for hydration reaction with microcement.
위와 같이 배합된 배합재료 100중량부를 기준으로 배합수 32중량부 미만일 경우에는 필요로 하는 주입성, 유동성, 자기충전성 등을 확보하기 어렵고, 52중량부를 초과하는 경우에는 건조수축 및 균열이 발생할 수 있으며, 내구성, 압축강도, 부착강도 등에 악영향을 초래할 수 있다. If the blending water is less than 32 parts by weight based on 100 parts by weight of the blending material blended as above, it is difficult to secure the required injectability, fluidity, self-filling, etc., and if it exceeds 52 parts by weight, drying shrinkage and cracks may occur. It can cause adverse effects on durability, compressive strength, and adhesive strength.
본 발명의 급결 그라우트재의 물리적 특성을 평가하기 위하여, 표 1, 2(단위 : 중량%)과 같은 실시예 1, 2, 3 및 비교예 1, 2, 3의 배합을 실시하였다. 배합에 따른 재료적 특성을 검증하기 위해 6가지 모두에 대해 물/결합재비(물의 중량/(시멘트+포졸란)의 중량) 50중량%로 혼합하였다. In order to evaluate the physical properties of the quick-setting grout material of the present invention, the formulations of Examples 1, 2, and 3 and Comparative Examples 1, 2, and 3 as shown in Tables 1 and 2 (unit: weight%) were carried out. In order to verify the material properties according to the formulation, all six types were mixed at 50% by weight of water / binder ratio (weight of water / weight of (cement + pozzolan)).
표 1에서, 실시예 1, 2, 3은 본 발명에 의한 배합재료를 적용한 것이고, 비교예 1은 CA계 급결재를 사용한 경우, 비교예 2는 석고 미분말을 사용한 경우, 비교예 3은 CA계 급결재와 석고 미분말을 사용하되, 둘의 합이 17중량%인 경우이다. In Table 1, Examples 1, 2, and 3 apply the compounding material according to the present invention, Comparative Example 1 uses a CA-based filler, Comparative Example 2 uses a fine gypsum powder, and Comparative Example 3 uses a CA-based filler. A quick filler and a fine gypsum powder are used, but the sum of the two is 17% by weight.
KS F 2432(주입 모르타르의 컨시스턴시 시험방법) 및 KS F 4044(수경성 시멘트 무수축 그라우트)에 규정되어 있는 방법에 의해, 유하시험을 실시하고, 재령 12시간과 28일 압축강도를 측정하였으며, 부착강도는 KS F 2476(폴리머 시멘트 모르타르의 시험 방법)에 규정된 방법에 의해 측정하였고, 그라우트재의 수축 정도를 확인하기 위해, KS F 2424(모르타르 및 콘크리트의 길이 변화 시험 방법)에 규정되어 있는 방법에 의해 재령 4주의 길이변화율(‘-’는 수축, ‘+’는 팽창을 나타내는 것이다)을 측정하고, 그 결과를 표 3에 나타내었다. According to the methods specified in KS F 2432 (test method for consistency of injection mortar) and KS F 4044 (hydraulic cement non-shrinkage grout), a flow test was conducted, and the compressive strength at 12 hours and 28 days was measured, and the adhesion strength was measured by the method specified in KS F 2476 (test method for polymer cement mortar), and to confirm the degree of shrinkage of the grout material, by the method specified in KS F 2424 (test method for length change of mortar and concrete) The rate of change in length at 4 weeks of age ('-' indicates contraction, '+' indicates expansion) was measured, and the results are shown in Table 3.
시험
(초)Yuha
test
(candle)
압축강도
(MPa)12 hours
compressive strength
(MPa)
압축강도
(MPa)28 days
compressive strength
(MPa)
부착강도
(MPa)12 hours
adhesion strength
(MPa)
부착강도
(MPa)28 days
adhesion strength
(MPa)
(%)length change rate
(%)
KS F 2432(주입 모르타르의 컨시스턴시 시험방법)에 규정된 깔때기(상단부 내경 70mm, 하단부 내경 10mm, 높이 420mm, 유출관의 길이 30mm) 속에 실시예 1, 2, 3 및 비교예 1, 2, 3에 의해 반죽된 그라우트재를 완전히 채우고, 그라우트재의 유출이 멈출 때까지 소요된 시간을 스톱워치로 측정(단위 : 초)하여 그라우트재의 컨시스턴시(consistency), 충전성을 확인하였다. In Examples 1, 2, and 3 and Comparative Examples 1, 2, and 3 in the funnel (upper inner diameter 70mm, lower inner diameter 10mm, height 420mm, length of outflow pipe 30mm) specified in KS F 2432 (test method for consistency of injection mortar) The kneaded grout material was completely filled, and the time taken until the outflow of the grout material stopped was measured with a stopwatch (unit: seconds) to confirm the consistency and filling properties of the grout material.
깔때기에 의한 유하 시험 결과, 그라우트재의 유출이 멈추는데, 실시예 1은 18.8초, 실시예 2는 18.3초, 실시예 3은 18.2초가 소요되어, 비교예 1, 2, 3(평균 약 24초)에 비해 약 20% 이상 충전성능이 우수한 것을 확인하였다. As a result of the flow test using the funnel, the outflow of the grout material stopped, Example 1 took 18.8 seconds, Example 2 took 18.3 seconds, Example 3 took 18.2 seconds, Comparative Examples 1, 2, and 3 (average about 24 seconds) It was confirmed that the charging performance was excellent by about 20% or more compared to
따라서 본 발명의 그라우트재를 구조물 보수, 소일네일, 지반보강, 비탈면보강 등의 그라우팅 공법에 사용하는 경우, 그라우팅 주입압을 대폭 낮출 수 있고, 주입압을 가하지 않고, 중력에 의해 흘려 넣는 방식으로 주입하는 것도 가능해진다. Therefore, when the grout material of the present invention is used in grouting methods such as structure repair, soil nail, ground reinforcement, and slope reinforcement, the grouting injection pressure can be significantly reduced, and injection by gravity without applying injection pressure is also possible. it becomes possible
그라우팅시 주입압 절감 효과 및 주입압력 없이 그라우팅이 가능하도록 하는 이러한 특별한 효과는 본 발명의 배합재료에 포함된 구성들의 유기적인 결합 및 상호작용에 의해 유동성, 자기충전성 등이 향상된 결과로 얻을 수 있는 효과이다.This special effect of reducing the injection pressure during grouting and enabling grouting without injection pressure is an effect that can be obtained as a result of improved fluidity, self-filling, etc. by the organic combination and interaction of components included in the compounding material of the present invention am.
KS F 4044(수경성 시멘트 무수축 그라우트)에 규정된 방법으로 실시예 1, 2, 3과 비교예 1, 2, 3에 대해 재령 12시간과 28일 압축강도를 측정한 결과, 실시예 1, 2, 3은 본 발명과 다르게 급결재를 적용한 비교예 1, 2, 3에 비해 초기 강도 및 장기 강도에서 월등히 우수한 것을 확인할 수 있었다. As a result of measuring the compressive strength at 12 hours and 28 days for Examples 1, 2, and 3 and Comparative Examples 1, 2, and 3 by the method specified in KS F 4044 (hydraulic cement non-shrinkage grout), Examples 1 and 2 , 3 was confirmed to be significantly superior in initial strength and long-term strength compared to Comparative Examples 1, 2, and 3 in which the quick-setting material was applied differently from the present invention.
그라우트재의 바람직한 부착강도(접착강도)는 1.5MPa 이상이고, 보다 바람직하게는 1.7MPa 이상이다. KS F 2476(폴리머 시멘트 모르타르의 시험 방법)에 규정된 방법에 의해 실시예 1, 2, 3과 비교예 1, 2, 3에 대해 부착강도(접착강도)를 측정한 결과, 실시예 1, 2, 3 모두 소요 강도를 충분히 만족하는 것을 확인할 수 있었다. The adhesive strength (bonding strength) of the grout material is preferably 1.5 MPa or more, more preferably 1.7 MPa or more. As a result of measuring the adhesive strength (adhesive strength) for Examples 1, 2, and 3 and Comparative Examples 1, 2, and 3 by the method specified in KS F 2476 (Test method for polymer cement mortar), Examples 1 and 2 , it was confirmed that all three satisfies the required strength sufficiently.
KS F 2424(모르타르 및 콘크리트의 길이 변화 시험 방법)에 규정된 방법에 의해 실시예 1, 2, 3의 길이변화율을 측정한 결과, 실시예 1, 2, 3의 수축량이 극히 미미하여 실질적으로 수축이 발생하지 않는 정도인 것을 확인할 수 있었다. As a result of measuring the length change rate of Examples 1, 2, and 3 by the method specified in KS F 2424 (Length change test method of mortar and concrete), the shrinkage of Examples 1, 2, and 3 was extremely insignificant, so that there was no substantial shrinkage. It was confirmed that this was not the case.
상기 시험결과값들로부터 본 발명의 급결 그라우트재는 초기 강도, 부착강도, 주입성, 유동성, 자기충전성 등이 우수하고, 경화 후 수축이 거의 발생하지 않는다는 것을 알 수 있어, 차수 그라우팅, 터널그라우팅, 지반보강 그라우팅을 비롯한 다양한 토목구조물 및 건축구조물의 신축 및 보수에 활용될 수 있는 것이다.From the above test results, it can be seen that the quick-setting grout material of the present invention has excellent initial strength, adhesion strength, injectability, flowability, self-filling property, etc., and almost no shrinkage after curing. It can be used for new construction and repair of various civil and architectural structures including ground reinforcement grouting.
본 발명의 실시예는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 다른 실시예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 진정한 기술적 보호 범위는 청구범위의 기술적 사상에 의하여 정해져야 할 것이다.The embodiments of the present invention are merely illustrative, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the claims.
없음doesn't exist
Claims (9)
상기 급결 그라우트재는 배합재료와 배합수를 포함하되,
상기 배합재료는,
마이크로시멘트 48~59 중량%;
포졸란 미분말 14~24 중량%;
급결재 미분말 5~14 중량%;
수축저감제 2.6~4.2 중량%;
재유화형 분말수지 11~18 중량%;
고성능감수제 0.4~1.8 중량%;
소포제 0.1~0.2 중량%;
증점제 0.1~0.5 중량%;
고성능유동화제 0.5~2 중량%를 포함하고,
상기 급결재 미분말은 CA계 급결재 66~90중량%, 석고 미분말 10~34중량%를 포함하는
주입성 및 내구성이 우수한 급결 그라우트재. In the quick-setting grout material used for grouting,
The quick-setting grout material includes a compounding material and a compounding water,
The blending material is
48-59% by weight of microcement;
14 to 24% by weight of pozzolan fine powder;
5 to 14% by weight of a fine powder of a quick-settling agent;
Shrinkage reducing agent 2.6 ~ 4.2% by weight;
11-18% by weight of re-emulsifying powdered resin;
0.4 to 1.8% by weight of a high-performance water reducing agent;
0.1 to 0.2% by weight of an antifoaming agent;
0.1 to 0.5% by weight of a thickener;
Contains 0.5 to 2% by weight of a high-performance plasticizing agent,
The fine powder of the quick-filling agent contains 66 to 90% by weight of CA-based quick-paying material and 10 to 34% by weight of fine gypsum powder
A quick-setting grout material with excellent injectability and durability.
상기 CA계 급결재는, CaO 38~49중량%, Al2O3 23~40중량%, SO3 16~29 중량%, SiO2 3~6중량%, MgO 1.6~3중량%, Fe2O3 1.2~2 중량%를 포함하는
주입성 및 내구성이 우수한 급결 그라우트재.According to claim 1,
The CA-based quick-setting material is CaO 38-49% by weight, Al 2 O 3 23-40% by weight, SO 3 16-29% by weight, SiO 2 3-6% by weight, MgO 1.6-3% by weight, Fe 2 O 3 containing 1.2 to 2% by weight
A quick-setting grout material with excellent injectability and durability.
상기 마이크로시멘트의 분말도는 6,500~8,000cm2/g인 것을 특징으로 하는
주입성 및 내구성이 우수한 급결 그라우트재.According to claim 1 or 5,
Characterized in that the fineness of the microcement is 6,500 to 8,000 cm 2 /g
A quick-setting grout material with excellent injectability and durability.
상기 급결재 미분말의 분말도는 6,500~9,000cm2/g 인 것을 특징으로 하는
주입성 및 내구성이 우수한 급결 그라우트재.According to claim 1 or 5,
Characterized in that the fineness of the fine powder of the quick-setting material is 6,500 to 9,000 cm 2 /g
A quick-setting grout material with excellent injectability and durability.
상기 포졸란 미분말은 천연 포졸란, 고로슬래그 미분말, 플라이애시, 실리카 퓸 중 적어도 어느 하나이고,
상기 포졸란 미분말의 분말도는 6,000~8,000cm2/g인 것을 특징으로 하는
주입성 및 내구성이 우수한 급결 그라우트재.According to claim 1 or 5,
The pozzolan fine powder is at least one of natural pozzolan, blast furnace slag fine powder, fly ash, and silica fume,
Characterized in that the fineness of the pozzolan fine powder is 6,000 to 8,000 cm 2 /g
A quick-setting grout material with excellent injectability and durability.
상기 급결 그라우트재는, 상기 배합재료 100중량부를 기준으로 배합수 32~52중량부를 포함하는 것을 특징으로 하는,
주입성 및 내구성이 우수한 급결 그라우트재.
According to claim 1 or 5,
Characterized in that the quick-setting grout material contains 32 to 52 parts by weight of mixing water based on 100 parts by weight of the mixing material,
A quick-setting grout material with excellent injectability and durability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020220051139A KR102506554B1 (en) | 2022-04-26 | 2022-04-26 | Quick-setting grout material with excellent injectability and durability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020220051139A KR102506554B1 (en) | 2022-04-26 | 2022-04-26 | Quick-setting grout material with excellent injectability and durability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR102506554B1 true KR102506554B1 (en) | 2023-03-06 |
Family
ID=85510056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020220051139A KR102506554B1 (en) | 2022-04-26 | 2022-04-26 | Quick-setting grout material with excellent injectability and durability |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR102506554B1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101322806B1 (en) | 2013-04-01 | 2013-11-04 | 아세아시멘트주식회사 | Binder of ultra-high-strength grout material and ultra-high-strength grout material for safe using the same, manufacturing method thereof |
| KR101709240B1 (en) * | 2016-06-20 | 2017-02-23 | (주)대우건설 | Mortar composition for recovering cross section of eco-friendly cement with sulphate resistance |
| JP2017178657A (en) * | 2016-03-29 | 2017-10-05 | 太平洋マテリアル株式会社 | Cement-based low-viscosity rapid hardening grout material |
| KR102054434B1 (en) * | 2019-08-07 | 2019-12-11 | 권승구 | Eco-Friendly Mortar Composite for Repair Section Comprising Function of Preventing Neutralization and Saltdamage and Constructing Methods Using Thereof |
-
2022
- 2022-04-26 KR KR1020220051139A patent/KR102506554B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101322806B1 (en) | 2013-04-01 | 2013-11-04 | 아세아시멘트주식회사 | Binder of ultra-high-strength grout material and ultra-high-strength grout material for safe using the same, manufacturing method thereof |
| JP2017178657A (en) * | 2016-03-29 | 2017-10-05 | 太平洋マテリアル株式会社 | Cement-based low-viscosity rapid hardening grout material |
| KR101709240B1 (en) * | 2016-06-20 | 2017-02-23 | (주)대우건설 | Mortar composition for recovering cross section of eco-friendly cement with sulphate resistance |
| KR102054434B1 (en) * | 2019-08-07 | 2019-12-11 | 권승구 | Eco-Friendly Mortar Composite for Repair Section Comprising Function of Preventing Neutralization and Saltdamage and Constructing Methods Using Thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI652246B (en) | Concrete material composition with modified rheology, methods of making, and uses thereof | |
| CN106220126B (en) | A kind of grouting material of foundation stabilization | |
| KR101654568B1 (en) | Early strength type shotcrete composite | |
| JP2015530353A (en) | Hydraulic composition | |
| KR101530830B1 (en) | Grout filler and grouting method using the grout filler | |
| CN112759347A (en) | High-toughness epoxy composite grouting material capable of being constructed at low temperature and preparation method thereof | |
| KR102457167B1 (en) | Eco friendly injection for ground reinforcement grout composition and construction method using the same | |
| KR101380171B1 (en) | High durable cement for semi-rigid pavement having chloride resistant cement and Semi-rigid pavement method using filling the same in asphalt with vibrating | |
| JP2020175600A (en) | Method for producing superdense cement composition | |
| KR101963579B1 (en) | High Early Strength Concrete Composition and Constructing Methods using Thereof | |
| KR102531968B1 (en) | Steel pipe simultaneous injection grouting method for tunnel construction | |
| KR20190108323A (en) | Geopolymer Concrete Composition And Method for Manufacturing Geopolymer Concrete Using the Same | |
| KR102506554B1 (en) | Quick-setting grout material with excellent injectability and durability | |
| JP2730234B2 (en) | High flow and high durability fiber reinforced filling mortar with excellent salt barrier properties | |
| JP4125009B2 (en) | Cement-based PC grout composition | |
| KR101503841B1 (en) | Environment-friendly geopolymer composition for stabilization of soft ground and strength enhancement and the method using thereof | |
| KR100979180B1 (en) | Composition of rapid setting micro cement | |
| KR101861326B1 (en) | Lightweight grouting composition with durability and self-healing property and grouting method therewith | |
| JP2017124950A (en) | Concrete and production method of concrete | |
| KR100899048B1 (en) | Inorganic thixotropical grout | |
| KR102531971B1 (en) | Soil strengthening and water blocking grouting method | |
| JP7219924B2 (en) | Cement composition for cavity filling, cavity filling material, and filling construction method | |
| JP3913717B2 (en) | Cement mortar composition for repairing asphalt and concrete pavement surface | |
| KR100859776B1 (en) | Compositions of accelerating agent for making shotcrete | |
| KR102506548B1 (en) | Expansion mortar with excellent initial and long-term expansion effect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GRNT | Written decision to grant |