KR20200031234A - Silica Grout Composition - Google Patents
Silica Grout Composition Download PDFInfo
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- KR20200031234A KR20200031234A KR1020180109973A KR20180109973A KR20200031234A KR 20200031234 A KR20200031234 A KR 20200031234A KR 1020180109973 A KR1020180109973 A KR 1020180109973A KR 20180109973 A KR20180109973 A KR 20180109973A KR 20200031234 A KR20200031234 A KR 20200031234A
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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
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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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
- 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
- C04B22/141—Acids
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/04—Carboxylic acids; Salts, anhydrides or esters thereof
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
- C04B24/42—Organo-silicon compounds
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- 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
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
- C09K17/42—Inorganic compounds mixed with organic active ingredients, e.g. accelerators
- C09K17/46—Inorganic compounds mixed with organic active ingredients, e.g. accelerators the inorganic compound being a water-soluble silicate
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/10—Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
- C04B2111/1037—Cement free compositions, e.g. hydraulically hardening mixtures based on waste materials, not containing cement as such
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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
- 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
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- 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)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
Description
본 발명은 실리카계 그라우트 조성물에 관한 것이다. 보다 구체적으로 본 발명은 압축강도, 저온 겔타임이 우수하면서 겔타임의 조정이 가능하고, 오염 물질의 배출이 거의 없어 친환경적으로 시공할 수 있는 실리카계 그라우트 조성물에 관한 것이다.The present invention relates to a silica-based grout composition. More specifically, the present invention relates to a silica-based grout composition capable of environmentally-friendly construction because of excellent compressive strength and low-temperature gel time, control of gel time, and little discharge of contaminants.
일반적으로 그라우트(grout) 또는 그라우팅(grouting)이란 지반에 터파기 공사나 터널 공사 등에서 누수의 방지나 토질의 안정을 위해서 지반의 갈라진 틈에 충전재를 주입하는 공법을 말한다. 이러한 그라우트를 위해 주입되는 액체를 그라우트재 또는 그라우트 약액이라고 한다.In general, grouting (groout) or grouting (grouting) refers to a method of injecting fillers into cracks in the ground to prevent water leakage or to stabilize soil quality in trenching or tunnel construction. The liquid injected for such grout is called a grout material or grout chemical.
이러한 그라우트 약액은 일반적으로 규산염을 포함한 실리카 졸로 이루어지는 제1 액과 시멘트와 혼화제를 포함하는 제2 액을 혼합하여 지반 강화가 필요한 틈에 주입하면 혼합된 제1 액 및 제2 액이 겔화하여 강도가 높은 고체로 변화함으로써 지반을 강화시키는 역할을 하게 된다.In general, the grout chemical solution is mixed with a first solution made of silica sol containing silicate and a second solution containing cement and admixture, and injected into a gap where ground reinforcement is required. By changing to a high solid, it serves to strengthen the ground.
대한민국 등록특허 제10-0913572호에서는 제1 액을 제조하기 위하여 황산알루미늄을 규산염과 함께 반응기에 넣고, 제2 액을 제조하기 위해서 시멘트에 각종 첨가제를 사용함으로써 그라우트 약액을 제조하는 기술에 대하여 개시하고 있다. 대한민국 등록특허 제10-1078044호에서는 규산소다를 포함하는 제1 액 및 시멘트를 포함하는 제2 액에 더하여 추가적인 완결용 시멘트를 포함하는 제3 액 및 각종 첨가제를 포함하는 제4 액으로 제조되는 그라우트 약액에 대하여 개시하고 있다.Republic of Korea Patent Registration No. 10-0913572 discloses a technique for preparing grout chemicals by adding aluminum sulfate to a reactor together with silicate to prepare the first liquid and using various additives in cement to produce the second liquid. have. In the Republic of Korea Patent No. 10-1078044, in addition to the first liquid containing soda silicate and the second liquid containing cement, a grout made from a third liquid containing additional cement for completion and a fourth liquid containing various additives It discloses about chemicals.
이와 같이 다양한 조성을 갖는 그라우트 약액은 압축강도나 팽창율 등 기본적인 물성을 만족해야 한다. 그러나, 그라우트 시공은 보통 실외에서 이루어지며 따라서 그라우트 약액의 겔화는 보통 섭씨 5 내지 35 도 사이에서 일어날 수 있도록 하고 있다. 그런데, 우리나라와 같이 동절기의 기간이 길고 일일 최고 기온이 섭씨 5도가 안되는 날이 많은 경우, 즉 기온이 섭씨 5 도 이하에서 겔화가 이루어지지 않거나 겔타임이 너무 지체되면 그라우트 시공이 어렵게 되고, 이로 인해 지반이 붕괴되는 등의 안전 사고의 우려가 높아지게 된다.Grout chemicals having various compositions as described above must satisfy basic properties such as compressive strength and expansion rate. However, grout construction is usually done outdoors, so the gelation of grout chemicals is usually allowed to occur between 5 and 35 degrees Celsius. However, if there are many days when the winter season is long and the maximum daily temperature is less than 5 degrees Celsius, that is, if the gelation is not performed below 5 degrees Celsius or the gel time is too long, the grout construction becomes difficult. There is an increased risk of safety accidents, such as the collapse of the ground.
또한, 그라우트재는 화학 반응에 의해 제조되고 금속 첨가물을 부가하는 경우가 많아 오염물질 배출로 인해 환경오염의 우려가 발생할 수 있다.In addition, the grout material is manufactured by a chemical reaction and often adds a metal additive, which may cause environmental pollution due to pollutant discharge.
따라서, 본 발명자들은 이러한 문제점을 해결하기 위하여 그라우트재의 기본적인 물성을 만족하면서도 저온에서 겔타임이 우수하며, 오염물질을 배출하지 않아 친환경적으로 사용할 수 있는 실리카계 그라우트 조성물을 제안하고자 한다.Accordingly, the present inventors have proposed a silica-based grout composition that satisfies the basic properties of the grout material, has excellent gel time at low temperatures, and does not emit contaminants, so as to solve these problems.
본 발명은 압축강도가 우수하면서도 저온 겔타임이 매우 우수한 그라우트 조성물을 제공하는 것이다.The present invention provides a grout composition having excellent compressive strength and excellent low-temperature gel time.
본 발명의 다른 목적은 겔타임을 임의로 조정하는 것이 가능한 실리카계 그라우트 조성물을 제공하는 것이다.Another object of the present invention is to provide a silica-based grout composition capable of arbitrarily adjusting gel time.
본 발명의 또 다른 목적은 오염물질을 배출하지 않으므로 친환경적인 시공이 가능한 실리카계 그라우트 조성물을 제공하는 것이다.Another object of the present invention is to provide a silica-based grout composition capable of eco-friendly construction since it does not emit contaminants.
본 발명의 상기 목적 및 기타 내재되어 있는 목적은 아래 설명하는 본 발명에 의하여 모두 용이하게 달성될 수 있다.The above and other intrinsic objects of the present invention can be easily achieved by the present invention described below.
본 발명에 따른 실리카계 그라우트 조성물은 (A) 규산소다, (B) 묽은황산, (C) 강도증가재, (D) 올레산 및 (E) 유기 실란계 화합물을 포함하는 것을 특징으로 한다.The silica-based grout composition according to the present invention is characterized by comprising (A) soda silicate, (B) dilute sulfuric acid, (C) strength increasing agent, (D) oleic acid, and (E) an organosilane-based compound.
본 발명에서, 물 100 중량부에 대하여,In the present invention, with respect to 100 parts by weight of water,
상기 (A) 규산소다 7 내지 25 중량부;(A) 7 to 25 parts by weight of sodium silicate;
상기 (B) 묽은황산 10 내지 15 중량부;(B) 10 to 15 parts by weight of dilute sulfuric acid;
상기 (C) 강도증가재 5 내지 10 중량부;The (C) strength increasing material 5 to 10 parts by weight;
상기 (D) 올레산 1 내지 5 중량부; 및(D) 1 to 5 parts by weight of oleic acid; And
상기 (E) 유기 실란계 화합물 2 내지 8 중량부;(E) 2 to 8 parts by weight of the organosilane compound;
로 포함하는 것을 특징으로 한다.Characterized in that it includes.
본 발명에서, 상기 강도증가재는 포졸란, 슬래그, 플라이애쉬, 벤토나이트 중 어느 하나 또는 두 개 이상을 혼합하여 사용하는 것이 바람직하다.In the present invention, the strength increasing material is preferably used by mixing any one or two or more of pozzolan, slag, fly ash, bentonite.
본 발명에서, 상기 슬래그 및 상기 플라이애쉬는 SiO2의 함량이 각각 40중량% 이상과 50중량% 이상의 것을 사용하는 것이 바람직하다.In the present invention, it is preferable that the slag and the fly ash have a content of SiO 2 of 40% by weight or more and 50% by weight or more, respectively.
본 발명에서, 상기 유기 실란계 화합물은 3-아미노트리에톡시실란(3-aminotriethoxysilane), 3-아미노프로필트리-에톡시실란(3-aminopropyltri-ethoxysilane), 옥타데실트리클로로실란(octadecyltrichlorosilane), 3-메타크릴록시프로필트리메톡시실란(3-methacryloxypropyltrimethoxylane), 헥사메틸다이실라젠(hexamethyldisilazane), 트리데카플루로오-1,1,2,2-테트라하이드로옥틸-1-트리클로로실란(tridecafluoro-1,1,2,2-tetrahydrooctyl-1-trichlorosilane) 및 이들 중 최소한 2 이상의 혼합물인 것이 바람직하다.In the present invention, the organic silane compound is 3-aminotriethoxysilane (3-aminotriethoxysilane), 3-aminopropyl tri-ethoxysilane (3-aminopropyltri-ethoxysilane), octadecyl trichlorosilane (octadecyltrichlorosilane), 3 -Methacryloxypropyltrimethoxysilane, hexamethyldisilazane, tridecafluoro-1,1,2,2-tetrahydrooctyl-1-trichlorosilane It is preferably 1,1,2,2-tetrahydrooctyl-1-trichlorosilane and a mixture of at least two of them.
본 발명은 압축강도가 우수하면서도 저온 겔타임이 매우 우수하고, 겔타임을 조정할 수 있으며 오염물질을 배출하지 않아 친환경적인 시공이 가능한 그라우트 조성물을 제공하는 발명의 효과를 갖는다.The present invention has the effect of the invention to provide a grout composition that is excellent in compressive strength, has excellent low-temperature gel time, can adjust gel time, and does not emit contaminants, thereby enabling eco-friendly construction.
본 발명에 따른 그라우트 조성물은 물 100 중량부에 대하여, (A) 규산소다 7 내지 25 중량부, (B) 묽은황산 10 내지 15 중량부, (C) 강도증가재 5 내지 10 중량부, (D) 고형분의 시트로넬릭산 1 내지 5 중량부, (E) 유기 실란계 화합물 2 내지 8 중량부를 포함하는 것을 특징으로 한다. 이하에서 본 발명의 조성물을 구성하는 각 성분에 대하여 상세히 설명한다.The grout composition according to the present invention, based on 100 parts by weight of water, (A) 7 to 25 parts by weight of sodium silicate, (B) 10 to 15 parts by weight of dilute sulfuric acid, (C) 5 to 10 parts by weight of strength increasing agent, (D ) 1 to 5 parts by weight of citronellinic acid in solid content, and (E) 2 to 8 parts by weight of an organosilane-based compound. Hereinafter, each component constituting the composition of the present invention will be described in detail.
(A) 규산소다(A) Soda silicate
본 발명에 따른 실리카계 그라우트 조성물의 규산소다(A)는 규산나트륨(Sodium Silicate)이라고도 불리우며, 고체상의 분말 또는 액체로 존재한다. 규산소다는 물에 대한 용해성이 있기 때문에 물유리(water glass)라고도 한다. 규산소다는 겔화 성질을 가지고 있는데, 이러한 성질은 토양이나 구조물의 안정화 기술에 응용되고 있다. 기공이 많은 토양을 규산소다로 안정화시키면, 규산소다의 겔화에 의해 토양 구조를 개량하여 강도를 향상시키고 투수성을 줄일 수 있다.Sodium silicate (A) of the silica-based grout composition according to the present invention is also called sodium silicate, and is present as a solid powder or liquid. Soda silicate is also called water glass because it is soluble in water. Soda silicate has gelling properties, which have been applied to soil or structure stabilization techniques. When the soil with many pores is stabilized with sodium silicate, the structure of the soil can be improved by gelation of sodium silicate to improve strength and reduce water permeability.
본 발명에서 규산소다(A)는 바람직하게 분말형태로 사용하되 물 100 중량부에 대하여 7 내지 25 중량부를 사용한다. 7 중량부 미만으로 사용할 경우 겔화가 잘 일어나지 않아 필요한 겔타임을 얻을 수 없고, 25 중량부를 초과하여 사용할 경우 용액의 점도가 너무 높아 시공에 부적절하게 될 수 있다.In the present invention, sodium silicate (A) is preferably used in powder form, but 7 to 25 parts by weight based on 100 parts by weight of water. When used in less than 7 parts by weight, gelation does not occur well, so that the required gel time cannot be obtained, and when used in excess of 25 parts by weight, the viscosity of the solution is too high and may be inappropriate for construction.
(B) 묽은황산(B) Dilute sulfuric acid
본 발명에 따른 실리카계 그라우트 조성물에 사용되는 묽은황산(B)은 강산인 황산을 질량 퍼센트를 기준으로 하여 60 내지 70 %의 농도로 희석한 것을 사용한다. 본 발명에서 사용되는 묽은황산(B)은 물 100 중량부에 대하여, 10 내지 15 중량부를 사용한다.The dilute sulfuric acid (B) used in the silica-based grout composition according to the present invention is a strong acid, sulfuric acid, based on a mass percentage, and diluted to a concentration of 60 to 70%. The dilute sulfuric acid (B) used in the present invention is used in an amount of 10 to 15 parts by weight based on 100 parts by weight of water.
(C) 강도증가재(C) Strength increasing material
본 발명에 따른 실리카계 그라우트 조성물에 사용되는 강도증가재(C)는 화학반응에 의해 겔화되어 급결된 그라우트재에 장기적인 강도를 부여한다. 즉, 강도증가재(C)는 시공 후 보강효과를 발현하는 기능을 수행하며 물과 수화반응(Hydration)을 통해 겔화가 진행되어 그라우트재가 경화되도록 한다. 본 발명에 사용되는 강도증가재(C)로는 포졸란, 슬래그, 플라이애쉬, 벤토나이트 중 어느 하나 또는 두 개 이상을 혼합하여 사용될 수 있다.The strength-increasing material (C) used in the silica-based grout composition according to the present invention is gelled by a chemical reaction to impart long-term strength to the rapid grout material. That is, the strength-increasing material (C) performs a function of expressing a reinforcing effect after construction, and gelation proceeds through hydration reaction with water to harden the grout material. The strength increasing material (C) used in the present invention may be used by mixing any one or two or more of pozzolan, slag, fly ash, and bentonite.
포졸란은 가용성 실리카가 주성분인 분말형태의 물질로, 시멘트의 수화반응 시에 생성되는 Ca(OH)2 성분과 반응하여 높은 강도를 갖도록 겔화를 촉진한다. 슬래그는 물을 흡착하는 성질이 적어 반응물의 초기 흐름성을 증가시키는 성질이 있으나 강도증가에 기여한다. 플라이애쉬는 그라우트의 흐름성을 강화시키면서도 강도보강에 도움이 된다. 벤토나이트는 박편상의 결정형태를 가지는 몬모릴로나이트의 입자를 갖는 현탁액의 형태로 적용할 수 있으며, 이 현탁액의 입자들이 공극을 충진하고 토양의 느슨한 입자들을 점결하는 역할을 한다. 이 중, 슬래그와 플라이애쉬는 SiO2의 함량이 각각 40중량% 이상과 50중량% 이상의 것을 사용하면, Ca(OH)2와 결합하여 겔화를 촉진하여 그라우트의 겔타임을 단축시킬 수 있다. 이를 통해 필요한 겔타임의 조정이 가능하다.Pozzolan is a powdered material whose main component is soluble silica, and reacts with Ca (OH) 2 component produced during hydration of cement to promote gelation to have high strength. Slag has the property of increasing the initial flowability of the reactant due to its low adsorption properties, but contributes to the increase in strength. Fly ash enhances the flowability of grout and helps strengthen strength. Bentonite can be applied in the form of a suspension with particles of montmorillonite with flaky crystals, and the particles of the suspension fill voids and loosen loose particles in the soil. Among them, slag and fly ash, when the content of SiO 2 is 40% by weight or more and 50% by weight or more, can be combined with Ca (OH) 2 to promote gelation, thereby shortening the gel time of grout. Through this, necessary gel time can be adjusted.
본 발명에서 사용되는 강도증가재(C)는 물 100 중량부에 대하여 5 내지 10 중량부로 사용한다. 5 중량부 미만으로 사용하면 강도증가효과가 미미하며, 10 중량부를 초과하여 사용하면 강도증가재가 물을 흡착하여 점도가 불필요하게 증가하기 때문이다. 8 중량부 이상 사용할 경우에는 팽창율이 증가하는 효과를 얻을 수 있다.The strength increasing material (C) used in the present invention is used in 5 to 10 parts by weight based on 100 parts by weight of water. This is because the effect of increasing the strength is insignificant when used in less than 5 parts by weight, and when used in excess of 10 parts by weight, the viscosity increases unnecessarily by the strength increasing material adsorbing water. When using 8 parts by weight or more, the effect of increasing the expansion rate can be obtained.
(D) 올레산(D) Oleic acid
본 발명에 따른 실리카계 그라우트 조성물에 사용되는 올레산(D)는 나트륨염의 형태로 비누의 원료나 천의 방수제로 주로 사용되는 성분이지만 본 발명에서는 올레산(D)을 첨가함으로써 그라우트재에서 발생될 수 있는 유해물질이 배출되는 것을 방지하여 토양 오염을 줄이는 역할을 한다. 본 발명의 올레산(D)은 올리브유, 카놀라유 또는 소, 돼지와 같은 동물의 유지로부터 분리하거나, 시판되는 것, 또는 공지된 화학적 합성법으로 제조된 것 어느 것을 이용하여도 좋다. 또한 올레산(D)은 천연물 유래 물질이므로 독성을 나타내지 않고 환경에 무해하다.Oleic acid (D) used in the silica-based grout composition according to the present invention is a component mainly used as a raw material for soap or as a waterproofing agent for cloth in the form of a sodium salt, but in the present invention, oleic acid (D) may be added to produce grout material. It serves to reduce soil pollution by preventing the release of harmful substances. The oleic acid (D) of the present invention may be either olive oil, canola oil, or a product obtained by separating from oils and fats of animals such as cattle, pigs, commercially available ones, or those prepared by known chemical synthesis methods. In addition, since oleic acid (D) is a natural product, it does not show toxicity and is harmless to the environment.
본 발명에 사용되는 올레산(D)의 함량은 물 100 중량부에 대하여 1 내지 5 중량부이다. 1 중량부 미만으로 사용되면 구리나 납과 같은 중금속이 토양으로 배출되는 것을 방지하기 어려우며, 5 중량부를 초과하여 사용될 경우 점도에 영향을 주게 되어 그라우트재로 사용하기 부적절할 수 있다.The content of oleic acid (D) used in the present invention is 1 to 5 parts by weight based on 100 parts by weight of water. When used in less than 1 part by weight, it is difficult to prevent heavy metals such as copper and lead from being discharged to the soil, and when used in excess of 5 parts by weight, the viscosity may be affected, which may be inappropriate for use as a grout material.
(E) 유기 실란계 화합물 2 내지 8 중량부;(E) 2 to 8 parts by weight of an organosilane compound;
본 발명에 따른 실리카계 그라우트 조성물에 사용되는 유기 실란계 화합물(E)은 분자구조에 자기조립 박막층을 형성하여 그라우트재의 표면을 개질함으로써 특히 자기조립에 의해 형성되는 다공성 구조를 형성한다. 이러한 구조를 통해 저온에서의 겔화를 촉진시키고 중금속 흡착성을 향상시키는 것으로 추정된다. The organosilane compound (E) used in the silica-based grout composition according to the present invention forms a self-assembled thin film layer on the molecular structure to modify the surface of the grout material, thereby forming a porous structure formed by self-assembly. It is estimated that this structure promotes gelation at low temperature and improves heavy metal adsorption.
이와 같은 자기 조립 유기화합물의 예로는 3-아미노트리에톡시실란(3-aminotriethoxysilane), 3-아미노프로필트리-에톡시실란(3-aminopropyltri-ethoxysilane), 옥타데실트리클로로실란(octadecyltrichlorosilane), 3-메타크릴록시프로필트리메톡시실란(3-methacryloxypropyltrimethoxylane), 헥사메틸다이실라젠(hexamethyldisilazane), 트리데카플루로오-1,1,2,2-테트라하이드로옥틸-1-트리클로로실란(tridecafluoro-1,1,2,2-tetrahydrooctyl-1-trichlorosilane) 및 이들 중 최소한 2 이상의 혼합물을 들 수 있으나, 반드시 이에 한정되는 것은 아니며 상술한 특성을 제공할 수 있는 자기조립 특성을 갖는 유기물이면 모두 적용이 가능할 것으로 판단된다. 본 발명에서 유기 실란계 화합물(E)은 물 100 중량부에 대하여 2 내지 8 중량부로 사용한다. 2 중량부 미만으로 사용하면 저온에서의 겔화 반응을 기대하기 어려우며, 8 중량부를 초과하여 사용하는 경우에는 중금속 흡착성이 저하될 수 있다.Examples of such self-assembled organic compounds include 3-aminotriethoxysilane, 3-aminopropyltri-ethoxysilane, octadecyltrichlorosilane, 3- 3-methacryloxypropyltrimethoxylane, hexamethyldisilazane, tridecafluoro-1,1,2,2-tetrahydrooctyl-1-trichlorosilane , 1,2,2-tetrahydrooctyl-1-trichlorosilane) and a mixture of at least two of them, but is not limited thereto, and any organic material having self-assembly characteristics capable of providing the above-described properties may be applied. It is judged. In the present invention, the organosilane compound (E) is used in an amount of 2 to 8 parts by weight based on 100 parts by weight of water. When used in less than 2 parts by weight, it is difficult to expect a gelation reaction at a low temperature, and when used in excess of 8 parts by weight, heavy metal adsorption may be deteriorated.
실시예Example
일반 공업용수로 물 1 kg에 대하여 표 1에 기재된 함량에 따라 실시예 1 내지 5 및 비교실시예 1 내지 3에 따른 그라우트재 제1 액을 각각 제조하였다. 또한, 일반 공업용수 1kg, 시멘트((주)고려시멘트, 1종 보통 포틀랜드시멘트) 0.4 kg, 혼화제로 중조(유니케미칼, 제품명:탄산수소나트륨) 20 g 을 혼합하여 제조한 그라우트재 제2 액을 준비하였다. 본 실시예에서 규산소다(A)는 (주)대명케미칼의 규산나트륨 백색분말을 사용하였고, 묽은황산(B)은 유니케미칼의 묽은황산을 구매하여 사용하였다. 강도증가제(C)는 슬래그((주)효석)와 플라이애쉬((주)고려시멘트)를 중량비 1:1로 혼합하여 사용하였다. 올레산(D)은 덕산종합과학(주)의 올레인산(oleic acid)을 구입하여 사용하였다. 유기 실란계 화합물(E)은 자기 조립성 유기 고분자 화합물인 옥타데실트리클로로실란(Sigma-Aldrich사, 제품번호 104817)과 3-아미노프로필트리-에톡시실란(3-aminopropyltri-ethoxysilane)(EVONIK사, 제품명 Dynasylan® AMEO)을 중량비 1:1로 혼합하여 사용하였다.The first liquids of grout materials according to Examples 1 to 5 and Comparative Examples 1 to 3 were prepared according to the contents shown in Table 1 with respect to 1 kg of water as general industrial water. In addition, 2 kg of grout material prepared by mixing 1 kg of general industrial water, 0.4 kg of cement (Koryo Cement Co., Ltd., 1 type ordinary Portland Cement) and 20 g of sodium bicarbonate (Uni Chemical, product name: sodium bicarbonate) as a admixture. I prepared. In this example, sodium silicate (A) was used as a white powder of sodium silicate of Daemyung Chemical Co., Ltd., and dilute sulfuric acid (B) was used by purchasing dilute sulfuric acid of Unichemical. The strength increasing agent (C) was used by mixing slag (Hyo-Seok Co., Ltd.) and fly ash (Koryo Cement Co., Ltd.) in a weight ratio of 1: 1. Oleic acid (D) was purchased and used as oleic acid from Deoksan General Science Co., Ltd. Organic silane compounds (E) are self-assembling organic polymer compounds octadecyl trichlorosilane (Sigma-Aldrich, product number 104817) and 3-aminopropyl tri-ethoxysilane (EVONIK) , Product name Dynasylan® AMEO) was used by mixing in a weight ratio of 1: 1.
[표 1] 그라우트 조성물 함량 (단위: g)Table 1 Grout composition content (unit: g)
온도가 -3 ℃ 이하로 유지되는 냉동실에서, 가로×세로×높이가 50×50×50 cm3 부피의 용기 8 개를 준비하여 흙을 가득 채운 다음, 가운데 부분에 지름 5 cm, 깊이 20 cm로 파내어 구덩이를 만들었다. 이 구덩이에 제1 액과 제 2액을 동일한 부피비로 혼합한 용액을 투입하여 겔화가 되는 것을 관찰하였다. 겔화가 완료되면 그라우트재를 꺼내어 압축강도와 팽창율을 측정하였다. 압축강도 측정은 KS F 4919에 따라, 팽창율은 KS F 2433-'11에 의거하여 수행하였다. 저온 겔타임은 제1 액과 제2 액을 비이커로 구덩이에 부어 혼합되는 순간을 시작으로 하여, 그라우트재가 급결되기 까지의 시간을 측정하였다. 측정된 결과는 표 2에 도시하였다.In the freezer where the temperature is kept below -3 ℃, width × length × height by 50 × 50 × filled with the soil prepared by the eight vessels of 50 cm 3 volume and then, the diameter in the middle of 5 cm, depth 20 cm Digging made a pit. It was observed that the solution obtained by mixing the first solution and the second solution in the same volume ratio into the pit was gelated. When the gelation was completed, the grout material was taken out and the compressive strength and expansion rate were measured. The compressive strength was measured according to KS F 4919, and the expansion rate was performed according to KS F 2433-'11. The low-temperature gel time was started by the moment that the first liquid and the second liquid were poured into a pit with a beaker and mixed, and the time until the grout material was rapidly measured was measured. The measured results are shown in Table 2.
또한, 급결이 완료된 후에 각 그라우트 시료를 구덩이에서 제거하여 그 주변의 흙과 함께 채취하고 상온에서 물에 세척한 다음, 세척된 물을 오염 시료로 하여 폐기물공정시험기준에 따라 유해물질 함유량을 측정하였다. 시험기준은 국립환경과학원고시(제2017-54호, 2017.12.12)에 의거 측정하였다. 그 결과는 표 3에 도시하였다.In addition, after completion of rapid quenching, each grout sample was removed from the pit, collected with the surrounding soil, washed with water at room temperature, and then the washed water was used as a contaminant sample to measure the content of hazardous substances according to the waste process test standard . The test standards were measured according to the National Institute of Environmental Science (No. 2017-54, Dec. 12, 2017). The results are shown in Table 3.
[표 2][Table 2]
[표 3][Table 3]
상기 결과로부터 본 발명에 따른 실리카계 그라우트 조성물에 의해 제조된 그라우트재의 경우 우수한 압축강도를 가지며, 시공 후 수축이 일어나지 않으며 필요에 따라 일정 팽창율을 얻을 수 있고, 저온에서도 만족스러운 겔타임을 가지며, 유해물질의 배출이 없는 것을 확인할 수 있다.From the above results, the grout material produced by the silica-based grout composition according to the present invention has excellent compressive strength, does not shrink after construction, can obtain a constant expansion rate as needed, has satisfactory gel time even at low temperatures, and is harmful It can be confirmed that there is no discharge of substances.
이상에서 설명한 발명의 설명은 본 발명의 이해를 위하여 예를 들어 설명한 것에 불과할 뿐, 본 발명의 범위를 정하고자 하는 것이 아님을 이해하여야 한다. 본 발명의 범위는 아래 첨부된 청구범위에 의하여 정하여지며, 이 범위 내에서 본 발명의 단순한 변형이나 변경은 모두 본 발명의 보호범위에 속하는 것으로 이해되어야 한다.It should be understood that the description of the invention described above is merely an example for the purpose of understanding the invention, and is not intended to determine the scope of the invention. The scope of the present invention is defined by the appended claims, and it should be understood that within this range, simple modifications or changes of the present invention all belong to the protection scope of the present invention.
Claims (5)
상기 (A) 규산소다 7 내지 25 중량부;
상기 (B) 묽은황산 10 내지 15 중량부;
상기 (C) 강도증가재 5 내지 10 중량부;
상기 (D) 올레산 1 내지 5 중량부; 및
상기 (E) 유기 실란계 화합물 2 내지 8 중량부;
로 포함하는 것을 특징으로 하는 실리카계 그라우트 조성물.According to claim 1, with respect to 100 parts by weight of water,
(A) 7 to 25 parts by weight of sodium silicate;
(B) 10 to 15 parts by weight of dilute sulfuric acid;
The (C) strength increasing material 5 to 10 parts by weight;
(D) 1 to 5 parts by weight of oleic acid; And
(E) 2 to 8 parts by weight of the organosilane compound;
Silica-based grout composition comprising a.
3-아미노트리에톡시실란(3-aminotriethoxysilane), 3-아미노프로필트리-에톡시실란(3-aminopropyltri-ethoxysilane), 옥타데실트리클로로실란(octadecyltrichlorosilane), 3-메타크릴록시프로필트리메톡시실란(3-methacryloxypropyltrimethoxylane), 헥사메틸다이실라젠(hexamethyldisilazane), 트리데카플루로오-1,1,2,2-테트라하이드로옥틸-1-트리클로로실란(tridecafluoro-1,1,2,2-tetrahydrooctyl-1-trichlorosilane) 및 이들 중 최소한 2 이상의 혼합물인 것을 특징으로 하는 실리카계 그라우트 조성물.The method according to claim 2, wherein the organosilane compound
3-aminotriethoxysilane, 3-aminopropyltri-ethoxysilane, octadecyltrichlorosilane, 3-methacryloxypropyltrimethoxysilane ( 3-methacryloxypropyltrimethoxylane, hexamethyldisilazane, tridecafluoro-1,1,2,2-tetrahydrooctyl-1-trichlorosilane (tridecafluoro-1,1,2,2-tetrahydrooctyl- 1-trichlorosilane) and a silica-based grout composition, characterized in that a mixture of at least two of them.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102304319B1 (en) * | 2021-04-22 | 2021-09-23 | (유)나라기초건설 | Grout composition for ground reinforcement |
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| JPH1180732A (en) * | 1997-09-16 | 1999-03-26 | Mitsui Chem Inc | Grout agent for injection into ground, and improvement of ground by using the same |
| JP2005536429A (en) * | 2002-08-22 | 2005-12-02 | アクゾ ノーベル エヌ．ブイ． | Grout injection |
| JP2015503499A (en) * | 2011-12-29 | 2015-02-02 | ダウ グローバル テクノロジーズ エルエルシー | Low weathering tile grout composition |
| KR101780433B1 (en) * | 2016-03-14 | 2017-09-22 | 주식회사 삼표산업 | Ground reinforcement comprising slag wool dust, Grouting solution B, Grouting material and Grouting method using the sames |
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2018
- 2018-09-14 KR KR1020180109973A patent/KR102116182B1/en active IP Right Grant
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1180732A (en) * | 1997-09-16 | 1999-03-26 | Mitsui Chem Inc | Grout agent for injection into ground, and improvement of ground by using the same |
| JP2005536429A (en) * | 2002-08-22 | 2005-12-02 | アクゾ ノーベル エヌ．ブイ． | Grout injection |
| JP2015503499A (en) * | 2011-12-29 | 2015-02-02 | ダウ グローバル テクノロジーズ エルエルシー | Low weathering tile grout composition |
| KR101780433B1 (en) * | 2016-03-14 | 2017-09-22 | 주식회사 삼표산업 | Ground reinforcement comprising slag wool dust, Grouting solution B, Grouting material and Grouting method using the sames |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102304319B1 (en) * | 2021-04-22 | 2021-09-23 | (유)나라기초건설 | Grout composition for ground reinforcement |
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