KR101176895B1 - Urethane strata consolidation - Google Patents
Urethane strata consolidation Download PDFInfo
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/14—Soil-conditioning materials or soil-stabilising materials containing organic compounds only
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- C09K17/30—Polyisocyanates; Polyurethanes
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
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Abstract
Description
본 발명은 차수 및 연약지반 보강용 우레탄계 약액 주입제에 관한 것으로서, 더욱 상세하게는 지반의 이완 또는 붕괴를 억제하기 위하여 터널 굴착면 주변 등에 토사층 및 암반층 보강을 위해 시공되는 우레탄계 약액 주입제에 관한 것이다.TECHNICAL FIELD The present invention relates to a urethane-based chemical solution injecting agent for reinforcing order and soft ground, and more particularly, to a urethane-based chemical solution injecting agent applied for reinforcement of soil layer and rock layer around a tunnel excavation surface in order to suppress relaxation or collapse of the ground .
산업사회의 발달로 지하공간의 이용이 점차 확대되어 가는 현 상황에서 지하철, 전력구, 통신구 등 기타 지하공간의 가시설 공법 중 최근에는 나틈공법(NATM;New Austrian Tunneling Method)으로 터널을 건설하는 사례가 점차 증가하고 있다.In the current situation where the use of the underground space is gradually expanding due to the development of the industrial society, among the construction methods of other underground spaces such as the subway, electric power, and communication, recently, a tunnel construction method using the New Austrian Tunneling Method (NATM) Is gradually increasing.
터널을 근본적으로 지지하는 것은 주변 원지반이며, 이러한 주변 원지반이 보유하고 있는 지지기능을 활용하기 위해서는 굴착에 의하여 발생되는 원지반 응력과 강도와의 관계에 항상 주의하여야 한다. 발생 응력은 원지반의 초기응력, 측압계수 등의 원지반 고유의 성질과 터널의 단면형상, 굴착공법, 굴착 방식 등에 의하여 정해지며 원지반 응력집중의 정도로 파악할 수 있다. 주변 원지반의 강도가 발생응력보다 크다고 판단되면 지보부재는 시공 중의 안전성을 확보할 수 있는 정도로 설계함으로써 정체성에 노력하여야 하며, 원지반 강도가 발생응력보다 작은 경우에는 지보부재, 단면형상 및 시공법 등을 충분히 검토하여 원지반의 강도 저하 및 응력집중을 가능한 방지하는 설계와 시공을 하여야 한다.In order to utilize the supporting function possessed by the surrounding grounds, it is necessary to always pay attention to the relationship between the ground level stress and the strength generated by the excavation. The generated stress is determined by the intrinsic properties of the ground such as the initial stress and lateral pressure of the paper, the cross-sectional shape of the tunnel, the excavation method, and the excavation method. If it is judged that the strength of the surrounding area is larger than the generated stress, the support member should be designed to secure the safety during construction, and if the strength of the ground is smaller than the generated stress, the support member, Design and construction should be carried out to prevent the strength of the paperboard and stress concentration.
일반적으로 나틈공법의 지반보강 보조 공법으로서는 물유리계, 시멘트계 현탁액형이 많이 적용되어 왔다. 특히 지반강도 증진의 목적으로 시멘트 현탁액법이 보편적으로 이용되고 있다. 시멘트 현탁액법은 비용이 적게 들고 일정한 강도를 보장하지만, 경화기간이 길고 차수효과가 떨어지며 하중이 크므로 침투시 문제가 발생되어 연약 지반에서는 그 효과를 거의 기대하기 어렵다.In general, water-glass system and cementitious suspension system have been widely applied as the subsurface reinforcement method of the slip method. Especially, cement suspension method is widely used for the purpose of improving the soil strength. The cement suspension method is less costly and guarantees a certain strength. However, since the curing period is long, the effect of the order is low, and the load is large, the problem of penetration is difficult to be expected in the soft ground.
이러한 연약지반 여건에서는 강관다단주입 공법이나, 우레탄계 약액주입공법이 많이 활용되고 있다.In such soft ground conditions, steel pipe multi-stage injection technique and urethane chemical solution injection technique are widely used.
강관다단주입 공법은 강도증진이나 하중경감의 효과는 양호하나, 차수 효과가 떨어지며 보강공에 필요한 공정이 굴착공정에 지대한 영향을 미치므로 공기를 맞추는데 매우 불리하며, 또한 지하수 유출이 많을 경우 차수 효과는 거의 기대할 수 없으므로 적용범위가 매우 제한된다. In the steel pipe multi-stage injection method, although the effect of strength enhancement and load reduction is good, the effect of order is poor, and the process necessary for the reinforcement hole has a great influence on the excavation process, so it is very disadvantageous to match the air. The application range is very limited because it can hardly be expected.
또한, 최근 많이 사용되는 LW(Lables Wasser Glass)계 약액주입공법 및 SGR(Space Grouting Rocket System)계 약액주입공법은 물유리 약액과 시멘트 현탁액을 혼합하면 겔(GEL)화 된다는 현상에 착안하여 개발된 공법으로, 재료의 낭비가 발생하지 않아 재료비, 공사비가 저렴한 장점이 있지만, 대규모 설비가 필요하고 천공에 보링 머신 등 막장에 여타 복잡한 기계설비가 설치되어야 하며, 세사층이나 점토층과 같은 변동지반에 대한 고결특성에 있어 지하수에 의한 영향이 지대하므로 계획적 시공이 곤란한 단점이 있다.In addition, recently developed LW (Lables Wasser Glass) chemical solution injection method and SGR (Space Grouting Rocket System) chemical solution injection method have been developed by focusing on the phenomenon of gel (GEL) by mixing water glass solution and cement suspension , It is advantageous that material cost and construction cost are cheap because material waste does not occur. However, large-scale equipment is required and other complex mechanical equipment such as boring machine must be installed in the perforation. In the characteristic, the effect due to the groundwater is large, so there is a disadvantage that it is difficult to carry out the planned construction.
그리고, 현재 새롭게 알려지고 있는 폴리우레탄 주입공법(이하 우레탄 공법이라 함)은 암반고결공법(PUIF)으로 1990년대부터 시공되기 시작하였다.The polyurethane injection method (hereinafter referred to as the urethane method), which is now known, has begun to be constructed since the 1990s by the rock hardening method (PUIF).
이러한 우레탄 공법은 연약한 지층, 파쇄대 및 단층대 등에 일정한 간격으로 천공한 후 주입볼트를 삽입하고, 이 삽입된 주입볼트내에 2액형의 발포성 우레탄계 약액을 혼합하여 20kg/cm2 정도의 압력을 가하여 절리가 발달된 암반의 암핀 사이를 완전히 충진함으로 하나의 암반체가 아치형태를 이루어 터널 상부의 암반 상재 하중을 지지하여 변형을 방지하게 하는 공법이다.The polyurethane formulations are soft resin layer, and a fracture fault zone insert injection bolt after perforation at regular intervals, or the like, and a mixture of expandable polyurethane drug solution of two-component injection in the inserted bolt 20kg / cm 2 And the rocks are fully filled with amphibole of the rock with developed joints so that one rock body forms an arch shape to support the rock mass load at the top of the tunnel to prevent deformation.
또한, 측벽부의 측암에 의한 변형도 방지할 수 있으며, 특히 암편사이의 공극이 완전히 우레탄 약액으로 충진되므로 완벽한 차수 효과를 얻을 수 있다.In addition, deformation of the side wall portion due to side cancer can be prevented. In particular, since the void between the arcuate portions is completely filled with the urethane chemical liquid, a perfect order effect can be obtained.
종래의 우레탄 공법에 사용되는 우레탄계 약액 주입제는 주제인 A액 및 경화제인 B액으로 구성된 2액형 우레탄 약액을 사용한다.The urethane liquid chemical injecting agent used in the conventional urethane method uses a two-component urethane chemical liquid composed of a liquid A as a main component and a liquid B as a curing agent.
상기 주제로 사용되는 A액의 경우, 폴리올계 혼합물에 가교제, 정포제, 발포제, 점도저하제를 혼합하여 사용 하였으며, 경화제인 B액의 경우는 디페닐메탄 디이소시아네이트(MDI)계 폴리머를 사용하였다.In the case of the liquid A used in the above-mentioned subject, a crosslinking agent, a foaming agent, a foaming agent and a viscosity reducing agent were mixed with the polyol-based mixture, and diphenylmethane diisocyanate (MDI) polymer was used for the liquid B as the curing agent.
반응상태는 경화제의 이소시아네이트기(B액)와 주제의 폴리올수산기(A액)가 주입기 내에 장착된 고정 믹서기를 통하여 혼합 교반되어 목적한 부위에 혼합 주입하여 사용한다In the reaction state, the isocyanate group (liquid B) of the curing agent and the polyol hydroxyl group (liquid A) of the main component are mixed and stirred through a fixed blender equipped in the injector,
그러나, 종래 차수 및 연약지반 보강용 우레탄계 약액 주입제는 압축강도 및 휨강도가 각각 400N/cm2 이하의 수치를 나타냄으로 안정적인 암반 보강이 어려우며, 이에 따른 지반 구조물의 내구성에 있어서도 보다 보강된 조성물을 필요로 하는 문제점이 있었다.
However, since the urethane-based chemical solution injecting agent for the conventional anchorage and soft ground reinforcement has a compressive strength and a flexural strength of less than 400 N / cm 2 respectively, it is difficult to stably reinforce the rock foundation. Accordingly, a reinforced composition is required for the durability of the ground structure .
본 발명은 상기한 종래 우레탄계 약액 주입제의 강도 저하에 따른 문제를 개선하기 위해 제안된 것으로서, 압축강도 및 휨강도를 각각 400 이상의 강도로 유지할 수 있는 주입제 조성물을 제공함으로서 보다 완벽한 지반 및 암반 보강이 이루어질 수 있도록 하는데 목적이 있다.The present invention has been proposed in order to solve the problems caused by the lowering of the strength of the conventional urethane liquid chemical injector, and it is possible to provide the injector composition capable of maintaining the compressive strength and the flexural strength at 400 or more, respectively, To be made possible.
상기 목적을 이루기 위한 본 발명의 차수 및 연약지반 보강용 우레탄계 약액 주입제는, 수산기(OH-)를 가지는 폴리올을 포함하는 폴리올과, 촉매, 정포재가 혼합된 A액과; 이소시아네이트기(NCO-)를 가진 화합물을 포함하는 B액이 혼합되어지는 것을 특징으로 한다.To achieve the above object, the present invention provides a urethane liquid chemical injector for reinforcing a soft ground, comprising: an A liquid mixed with a polyol including a polyol having a hydroxyl group (OH-), a catalyst and a foaming material; And a B liquid containing a compound having an isocyanate group (NCO-) is mixed.
또한, 상기 A액에 포함되는 수산기를 가지는 폴리올은 폴리옥시아킬렌글리콜, 폴리에텔폴리올 또는 2가 알콜중합체와의 화합물인 것을 특징으로 한다.Further, the polyol having a hydroxyl group contained in the liquid A is a compound with polyoxyalkylene glycol, polyether polyol or dihydric alcohol polymer.
또한, 상기 폴리올은 점도가 50~60 CPS, 수산기가 500~600 의 범위를 만족하도록 하는 것을 특징으로 한다.The polyol has a viscosity of 50 to 60 CPS and a hydroxyl value of 500 to 600.
또한, 상기 A액에 혼합되는 촉매는 유기아민촉매인 것을 특징으로 한다.The catalyst to be mixed with the liquid A is an organic amine catalyst.
또한, 상기 유기아민촉매는 테트라메틸헥산디아민을 사용하는 것을 특징으로 한다.Further, the organic amine catalyst is characterized by using tetramethylhexanediamine.
또한, 상기 A액에 혼합되는 정포제는 실리콘 정포제인 것을 특징으로 한다.Further, the foaming agent to be mixed with the liquid A is a silicone foaming agent.
또한, 상기 A액에는 가교제로서 하이드록시 푸로필에이티드 에틸렌 디아민이 추가로 첨가되는 것을 특징으로 한다.Further, the solution A is further characterized in that hydroxypropylated ethylenediamine is further added as a crosslinking agent.
또한, 상기 B액에 포함되는 이소시아네이트기를 가진 화합물은 디페닐메탄 디이소시아네이트(MDI) 또는 폴리올과 반응시킨 프리폴리머인 것을 특징으로 한다.The isocyanate group-containing compound contained in the liquid B is a prepolymer obtained by reacting with diphenylmethane diisocyanate (MDI) or a polyol.
또한, 상기 B액에는 점도 저하제로써 디부틸푸탈레이트(DBP) 또는 디옥틸푸탈레이트(DOP)가 혼합된 것을 특징으로 한다.Further, the liquid B is characterized in that dibutyl phthalate (DBP) or dioctyl phthalate (DOP) is mixed as a viscosity reducing agent.
또한, 상기 B액에는 가소제로서 식물성 오일이 첨가되는 것을 특징으로 한다.Further, the liquid B is characterized in that a vegetable oil is added as a plasticizer.
이러한 본 발명의 차수 및 연약지반 보강용 우레탄계 약액 주입제는, 압축강도 및 휨강도가 각각 400, 500 이상으로 유지됨으로 보다 효과적인 지반 및 암반 보강이 이루어지게 됨은 물론 강력한 차수효과를 나타내게 되고, 주변 환경 오염을 발생시키지 않게 되어 보다 친환경적인 시공이 이루어질 수 있게 된다.
Since the compressive strength and the flexural strength of the urethane based chemical solution injector for soft ground reinforcement according to the present invention are maintained at 400, 500 or more respectively, more effective ground and rock reinforcement can be achieved, So that a more environmentally friendly construction can be achieved.
이하, 본 발명의 구체적인 실시 예를 첨부 도면을 참조하여 상세히 살펴보기로 한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
먼저, 본 발명의 일 실시 예에 따른 차수 및 연약지반 보강용 우레탄계 약액 주입제의 조성을 살펴보기로 한다.First, the composition of the urethane-based chemical solution injecting agent for reinforcing an order and soft ground according to an embodiment of the present invention will be described.
본 실시 예에서의 A액은, 폴리옥시알킬렌 글리콜 40~55중량%와, 에틸렌 글리콜 30~44중량%와, 에틸렌 디아민 1~8중량%와, 실리콘정포제 1~5중량%와, 테트라메틸헥산디아민 1~3중량%와, 발포제(141B) 3~7중량%, 가교제로서 하이드록시 푸로필에이티드 에틸렌 디아민 0.5~1 중량%의 범위로 혼합되어지게 된다.The liquid A in the present example was prepared by mixing 40 to 55% by weight of a polyoxyalkylene glycol, 30 to 44% by weight of ethylene glycol, 1 to 8% by weight of ethylenediamine, 1 to 5% 1 to 3% by weight of methylhexanediamine, 3 to 7% by weight of foaming agent 141B and 0.5 to 1% by weight of hydroxypropylated ethylenediamine as a crosslinking agent.
본 실시 예에서의 B액은, 디페닐메탄 4-4' 디이소시아네이트(MDI) 90~95중량%와, 점도 저하제(디부틸푸탈레이트) 5~10중량%의 범위로 혼합되어지게 된다.The liquid B in the present embodiment is mixed in the range of 90 to 95% by weight of diphenylmethane 4-4 'diisocyanate (MDI) and 5 to 10% by weight of a viscosity reducing agent (dibutyl phthalate).
그리고, 이러한 조성을 이루는 A액과 B액은 중량비 기준으로 1:2.5~3.0의 비율로 혼합하여 사용되어짐이 바람직하다.The liquid A and the liquid B constituting such a composition are preferably mixed in a ratio of 1: 2.5 to 3.0 based on the weight ratio.
즉, 본 발명의 차수 및 연약지반 보강용 우레탄계 약액 주입제는 주입기를 통해 A액과 B액이 Y자형 파이프의 주입기 선단에 있는 고정 믹서를 통과하면서 혼합이 이루어져 압입 설치한 파이프(패커) 선단의 구멍을 통하여 토출됨으로써 주입수지가 연약지반에 침투하여 수분 이내에 빠른 경화가 이루어지게 된다.That is, according to the present invention, the urethane liquid chemical injecting agent for reinforcement of the soft ground is mixed with the liquid A and the liquid B through the fixed mixer at the tip of the injector of the Y-shaped pipe through the injector, By injecting through the holes, the injected resin penetrates into the soft ground and quick curing is achieved within a few minutes.
특히, 본 발명에 따른 차수 및 연약지반 보강용 우레탄계 약액 주입제는 주로 터널 천단부의 지반보강, 암반 탈락에 의한 여굴 및 복공배면의 충진시공, 터널 하부 보강 및 측벽 보강 및 지반 이완방지, 지하수 유출에 대응하기 위한 차수제로 사용되어짐이 바람직하다.Particularly, the urethane-based chemical solution injecting agent according to the present invention is mainly used for reinforcing the ground at the tunnel top, for filling the backside of the concrete, for reinforcing the bottom of the tunnel, reinforcing the side walls and preventing the ground loosening, It is preferable to use it as an ordering agent for responding.
하기의 [표 1]은 상기 일 실시 예에 의해 제조된 약액 주입제의 특성을 측정한 비교표이다.[Table 1] below is a comparison chart measuring the characteristics of the chemical liquid injecting agent prepared according to one embodiment.
Viscosity (25 ± 1 ℃)
본 실험에서 점도는 KS M 3705(접착재의 일반 시험방법)에 따라 실험하였고, 비중시험은 KS M 5000(도료 및 관련원료 시험방법)에 따라 실험하였다.The viscosity was tested according to KS M 3705 (general test method for adhesive), and the specific gravity was tested according to KS M 5000 (paint and related material test method).
또한, 휨 강도 시험은 철금형 속에 가로 5㎝, 길이 25㎝, 두께 2.5㎝로 우레탄 4배 발포하고, 압축강도는 철금형 속에 가로 5㎝, 세로 5㎝, 높이 5㎝로 우레탄 4배 발포한 고결물을 각각 만능재료 시험기를 통해 휨강도 및 압축강도를 구하였다. 인장 접착강도는 철시편(폭 2.5㎝, 높이 5㎝, 길이 15㎝)에 접착된 상태로 만능재료 시험기를 통해 2mm/분의 속도로 인장하여 접착강도를 구하였다.The bending strength test was carried out in the same manner as in Example 1 except that the bending test was carried out by foaming a urethane 4 times in width in a steel mold with a width of 5 cm, a length of 25 cm and a thickness of 2.5 cm. The compressive strength was 5 cm in width, 5 cm in length, The bending strength and the compressive strength were determined by using a universal material testing machine. The tensile bond strength was determined by applying tensile strength at a rate of 2 mm / min through an universal testing machine in the state of being adhered to an iron specimen (width 2.5 cm, height 5 cm, length 15 cm).
상기 실험 결과를 통해 확인할 수 있듯이, 본 발명에 따른 우레탄 약액은 압축강도는 약 400N/㎠ 이상, 휨강도 500N/㎠ 이상의 강도를 유지함으로써 완벽한 지반 및 암반 보강이 이루어질 수 있음을 알 수 있었다.As can be seen from the above experimental results, it was found that the urethane chemical solution according to the present invention maintains a compressive strength of at least about 400 N / cm 2 and a flexural strength of at least 500 N / cm 2, thereby achieving perfect ground and rock reinforcement.
특히, 약액 주입시 약액이 지하수에 흡수되더라도 반응생성물의 발포에 의해 강력한 차수 효과를 발휘하며, 반응생성물의 용출실험결과 pb,Cd,Cr,Ag,Hg,CN 패놀 등의 중금속이 검출되지 않았고, 어독(물고기) 실험결과 무독성이 증명되어 친환경적이며 솔벤트 또는 염기성 물질(바닷물) 등에 영향을 받지 않아 일정한 강도를 계속 유지할 수 있는 효과를 나타내게 된다.
Particularly, even when the chemical solution is absorbed into the groundwater during the injection of the chemical solution, the chemical reaction of the reaction product is strongly affected by the foaming, and heavy metals such as pb, Cd, Cr, Ag, Hg and CN phenol are not detected, As a result of the fish test, it is proved that it is non-toxic and is environment-friendly. It is not affected by the solvent or basic substance (seawater), so that it can maintain constant intensity.
한편, 본 발명의 다른 실시 예에 따른 차수 및 연약지반 보강용 우레탄계 약액 주입제의 조성은 다음과 같다.Meanwhile, the composition of the urethane-based chemical solution injecting agent for reinforcing hard and soft ground according to another embodiment of the present invention is as follows.
먼저, A액은 폴리에테르폴리올 40~50중량%, 폴리옥시알킬렌글리콜 40~45중량%, 폴리에스텔폴리올(분자량 1000) 1~7중량%, 실리콘정포제 1~3중량%, 트리에틸디아민+디메틸에틸아민 1~3중량%, 발포제 1~5중량% 범위로 혼합되어지게 된다.First, the liquid A is prepared by mixing 40 to 50 wt% of a polyether polyol, 40 to 45 wt% of a polyoxyalkylene glycol, 1 to 7 wt% of a polyester polyol (molecular weight 1000), 1 to 3 wt% 1 to 3% by weight of dimethylethylamine, and 1 to 5% by weight of a foaming agent.
그리고 B액은 디페닐메탄 4-4' 디이소시아네이트(MDI) 80~90중량%, 에틸렌글리콜 1~10중량%, 점도저하제(디옥틸푸탈레이트) 1~10중량%의 범위로 혼합되어지게 된다.The liquid B is mixed in the range of 80 to 90% by weight of diphenylmethane 4-4 'diisocyanate (MDI), 1 to 10% by weight of ethylene glycol and 1 to 10% by weight of a viscosity reducing agent (dioctyl phthalate) .
본 실시 예에서는 A액과 B액은 중량비 기준으로 1:1의 비율로 혼합하여 사용하였으며, 이러한 약액 주입제의 특성을 하기 [표 2]에 나타내었다.In this embodiment, the liquid A and the liquid B are mixed at a ratio of 1: 1 on a weight basis. The properties of the liquid injector are shown in Table 2 below.
Viscosity (25 ± 1 ℃)
이러한 다른 실시 예의 약액 주입제 역시, 상기 일 실시 예의 약액 주입제와 같이 압축강도 및 휨강도가 우수하게 나타나며, 기타 다른 특성에 있어서도 동일한 효과를 나타냄을 확인할 수 있었다.It is also confirmed that the chemical solution injector of this embodiment exhibits excellent compressive strength and bending strength as in the case of the chemical liquid injector of the above embodiment, and exhibits the same effect in other characteristics as well.
따라서, 본 발명의 우레탄계 약액 주입제를 사용하게 되면, 보다 효과적인 지반 및 암반 보강이 이루어지게 됨은 물론 강력한 차수효과를 나타내게 되고, 주변 환경 오염을 발생시키지 않게 되어 보다 친환경적인 시공이 이루어지게 됨을 알 수 있다.
Therefore, when the urethane-based chemical solution injecting agent of the present invention is used, it is possible to realize more effective ground and rock reinforcement, and a strong order effect, without causing pollution of the surrounding environment, have.
Claims (11)
상기 A액에 포함되는 수산기를 가지는 폴리올은 점도가 50~60 CPS, 수산기가 500~600 의 범위를 만족하는 것으로서, 폴리옥시아킬렌글리콜, 폴리에텔폴리올 또는 2가 알콜중합체와의 화합물이고,
상기 A액에 혼합되는 촉매는 테트라메틸헥산디아민이며,
상기 A액에 혼합되는 정포제는 실리콘 정포제이고,
상기 A액에는 가교제로서 하이드록시 푸로필에이티드 에틸렌 디아민이 추가로 첨가되며,
상기 B액에 포함되는 이소시아네이트기를 가진 화합물은 디페닐메탄 디이소시아네이트(MDI) 또는 폴리올과 반응시킨 프리폴리머이고,
상기 B액에는 점도 저하제로써 디부틸푸탈레이트(DBP) 또는 디옥틸푸탈레이트(DOP)가 혼합되며,
상기 B액에는 가소제로서 식물성 오일이 첨가되는 것을 특징으로 하는 차수 및 연약지반 보강용 우레탄계 약액 주입제.
An A liquid mixed with a polyol having a hydroxyl group (OH-), a catalyst and a foaming material; A liquid B containing a compound having an isocyanate group (NCO < - >); and an urethane liquid chemical injecting agent for soft ground reinforcement,
The polyol having a hydroxyl group contained in the liquid A satisfies a viscosity of 50 to 60 CPS and a hydroxyl value of 500 to 600, and is a compound with polyoxyalkylene glycol, polyether polyol or dihydric alcohol polymer,
The catalyst to be mixed with the liquid A is tetramethylhexanediamine,
The foaming agent to be mixed with the liquid A is a silicone foaming agent,
Hydroxypropylated ethylenediamine is further added to the solution A as a crosslinking agent,
The compound having an isocyanate group contained in the liquid B is a prepolymer obtained by reacting with diphenylmethane diisocyanate (MDI) or polyol,
To the liquid B, dibutyl phthalate (DBP) or dioctyl phthalate (DOP) is mixed as a viscosity reducing agent,
Wherein the vegetable oil is added to the liquid B as a plasticizer.
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| JP2020084098A (en) * | 2018-11-29 | 2020-06-04 | 東ソー株式会社 | Infusion chemical agent composition for rock solidification or for cutoff |
| KR102139803B1 (en) | 2019-10-18 | 2020-07-31 | 대윤지오텍 주식회사 | Soft ground subsidence reinforcement composition |
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| KR100556567B1 (en) * | 2003-08-26 | 2006-03-03 | 김창준 | ultra-high-strength urethane composition for solidifying weak foundation |
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| RU2537178C2 (en) * | 2013-01-17 | 2014-12-27 | Федеральное государственное бюджетное научное учреждение "Российский научно-исследовательский институт проблем мелиорации" | Composition of structure-forming materials |
| JP2020084098A (en) * | 2018-11-29 | 2020-06-04 | 東ソー株式会社 | Infusion chemical agent composition for rock solidification or for cutoff |
| JP7200631B2 (en) | 2018-11-29 | 2023-01-10 | 東ソー株式会社 | Injection chemical composition for rock consolidation or water stoppage |
| KR102139803B1 (en) | 2019-10-18 | 2020-07-31 | 대윤지오텍 주식회사 | Soft ground subsidence reinforcement composition |
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