A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
POLYMERIZED FAST CURING ADDITIVE FOR CEMENTIOUS GROUTING
The present invention relates to a method for manufacturing a polymeric quick-setting material for cement grouting, which is provided to enhance stability against initial ground variations by increasing initial solidity and to obtain a perfect waterproof effect. To achieve this, the present invention comprises: a first step for forming a polyol mixture by mixing 50-70 wt% of polyethylene glycol which contains more than 50% of ethylene oxide and has a molecular weight of 700-3000, and 30-50 wt% of polyoxyalkylene glycol which has a molecular weight of 400-2000 and 2-3 functional groups, and heating the mixture at 60°C; a second step for manufacturing a pre-polymer to have a remaining NCO% of 2-15 by mixing 40-60 wt% of the polyol mixture and 30-60 wt% of isocyanate and heating the same at 80-85°C for three hours; a third step for mixing 0.001-1.0 wt% of a reaction controlling agent (a reaction accelerating agent or a reaction retardant) with respect to 100 wt% of the pre-polymer; and a fourth step for mixing 5-40 wt% of an organic solvent as a viscosity controlling agent with respect to 100 wt% of the mixture.
본 발명은 시멘트 그라우팅용 고분자계 급결재 제조방법에 관한 것으로서, 초기 강도를 증가시킴으로서 초기 지반 변이에 대한 안정성을 향상시킴과 함께 완벽한 차수 효과를 얻을 수 있도록 하기 위한 것이다. 이를 실현하기 위한 본 발명은, 에틸렌옥사이드(Ethylene oxide) 함량이 50% 이상이고 분자량이 700~3,000인 폴리에틸렌글리콜 50~70중량%와, 분자량이 400~2,000이고 관능기가 2~3인 폴리옥시알킬렌글리콜(Polyoxyalkylene Glycol)을 30~50중량%를 60°C로 가열 혼합하여 폴리올(polyol) 혼합물을 형성하는 제1단계와; 상기 혼합된 폴리올(polyol) 혼합물 40~60중량%와, 이소시아네이트(Isocyanate) 30~60중량%를 혼합 80~85°C에서 3시간 가열하여 잔존 NCO%가 2~15 되게 프리폴리머(Pre-polymer)를 제조하는 제2단계와; 상기 프리폴리머(Pre-polymer) 100중량%를 기준으로 반응조절재(반응촉진재 또는 반응지연재) 0.001~1.0중량%를 혼합하는 제3단계와; 상기 혼합물 100중량%를 기준으로 점도 조절재로 유기용재를 5~40중량%로 혼합하는 제4단계를 포함하는 것을 특징으로 한다.
POLYMERIZED FAST CURING ADDITIVE FOR CEMENTIOUS GROUTING
The present invention relates to a method for manufacturing a polymeric quick-setting material for cement grouting, which is provided to enhance stability against initial ground variations by increasing initial solidity and to obtain a perfect waterproof effect. To achieve this, the present invention comprises: a first step for forming a polyol mixture by mixing 50-70 wt% of polyethylene glycol which contains more than 50% of ethylene oxide and has a molecular weight of 700-3000, and 30-50 wt% of polyoxyalkylene glycol which has a molecular weight of 400-2000 and 2-3 functional groups, and heating the mixture at 60°C; a second step for manufacturing a pre-polymer to have a remaining NCO% of 2-15 by mixing 40-60 wt% of the polyol mixture and 30-60 wt% of isocyanate and heating the same at 80-85°C for three hours; a third step for mixing 0.001-1.0 wt% of a reaction controlling agent (a reaction accelerating agent or a reaction retardant) with respect to 100 wt% of the pre-polymer; and a fourth step for mixing 5-40 wt% of an organic solvent as a viscosity controlling agent with respect to 100 wt% of the mixture.
본 발명은 시멘트 그라우팅용 고분자계 급결재 제조방법에 관한 것으로서, 초기 강도를 증가시킴으로서 초기 지반 변이에 대한 안정성을 향상시킴과 함께 완벽한 차수 효과를 얻을 수 있도록 하기 위한 것이다. 이를 실현하기 위한 본 발명은, 에틸렌옥사이드(Ethylene oxide) 함량이 50% 이상이고 분자량이 700~3,000인 폴리에틸렌글리콜 50~70중량%와, 분자량이 400~2,000이고 관능기가 2~3인 폴리옥시알킬렌글리콜(Polyoxyalkylene Glycol)을 30~50중량%를 60°C로 가열 혼합하여 폴리올(polyol) 혼합물을 형성하는 제1단계와; 상기 혼합된 폴리올(polyol) 혼합물 40~60중량%와, 이소시아네이트(Isocyanate) 30~60중량%를 혼합 80~85°C에서 3시간 가열하여 잔존 NCO%가 2~15 되게 프리폴리머(Pre-polymer)를 제조하는 제2단계와; 상기 프리폴리머(Pre-polymer) 100중량%를 기준으로 반응조절재(반응촉진재 또는 반응지연재) 0.001~1.0중량%를 혼합하는 제3단계와; 상기 혼합물 100중량%를 기준으로 점도 조절재로 유기용재를 5~40중량%로 혼합하는 제4단계를 포함하는 것을 특징으로 한다.
POLYMERIZED FAST CURING ADDITIVE FOR CEMENTIOUS GROUTING
시멘트 그라우팅용 고분자계 급결재 제조방법
KIM CHANG JOON (author) / KIM TAE HOON (author)
2015-08-07
Patent
Electronic Resource
Korean
IPC:
C04B
Kalk
,
LIME
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