CAJ | 학술논문

抗疏力土壤固化剂是一种化学加固材料，在国际上得到了广泛的运用，改良效果明显，但在我国黄土地区运用较少。利用抗疏力土壤固化剂对甘肃庆阳地区以及甘肃兰州地区的黄土进行化学改性试验，探讨抗疏力固化剂在我国黄土地区运用的可行性。对不同配比的抗疏力固化黄土进行界限含水率试验、击实试验、单轴抗压试验、膨胀试验以及干缩试验。试验结果表明，添加抗疏力固化剂之后改性黄土的液限、塑限及塑性指数增大；最大干密度减小，最优含水率增大，抗压强度增大，线性干缩率先减小后增大，线性膨胀率减小。通过和黄土5%水泥改性土、5%石灰改性土比较可知，抗疏力固化剂的最佳配比在2.0%～2.5%范围。掺量为2.5%的抗疏力固化黄土的改良效果介于水泥改性土和石灰改性土之间，在甘肃黄土地区具有一定的使用价值。
항소력토양고화제시일충화학가고재료，재국제상득도료엄범적운용，개량효과명현，단재아국황토지구운용교소。이용항소력토양고화제대감숙경양지구이급감숙란주지구적황토진행화학개성시험，탐토항소력고화제재아국황토지구운용적가행성。대불동배비적항소력고화황토진행계한함수솔시험、격실시험、단축항압시험、팽창시험이급간축시험。시험결과표명，첨가항소력고화제지후개성황토적액한、소한급소성지수증대；최대간밀도감소，최우함수솔증대，항압강도증대，선성간축솔선감소후증대，선성팽창솔감소。통과화황토5%수니개성토、5%석회개성토비교가지，항소력고화제적최가배비재2.0%～2.5%범위。참량위2.5%적항소력고화황토적개량효과개우수니개성토화석회개성토지간，재감숙황토지구구유일정적사용개치。
Theconsolid system is a chemical reinforcement reagent that has been succesfully used worldwide to improve the engineering properties of soils. However,few studies address the application of the consolid system in the Huangtu Plateau(China). Here we tested the the consolid reagent for the improvement of loess soils form Qingyang and Lanzhou,thus to evaluate the feasibility of Consolid system applied in loess region of China. Laboratory tests conducted include Atterberg limits tests,compaction tests,unconfined compression tests,swelling tests and the drying shrinkage tests in diverse mixed ratio of the consolid system to bulk solid. The results implied that,with the increasing proportion of Consolid system in the mixture,the liquid limit,plastic limit,plasticity index,optimum moisture content,compressive strength and anti-disintegration property increased. While the maximum dry density and the swelling percentage decreased. The liner drying shrinkage percentage decreased followed by increased. The optimum proportion of Consolid system added into loess soils is suggested to be 2%~2.5%,which made the comparable effect to the 5% modified cement or 5% modified lime,with respect to requirement of engineering construction in loess area of China.