摘要
注浆的主要作用为防水堵漏和充填加固,其效果很大程度上由浆液性能决定。通过试验总结了浆液在不同水灰比、膨润土和外加剂掺量等因素作用下性能的变化规律。结果表明,影响浆液性能的最主要因素为水灰比;膨润土降低了浆液的流动度,掺量大于8%时显著降低结石体强度;减水剂对浆液流动性影响明显,掺量大于0.8%时显著增大析水率、降低结石率、增加凝结时间;水玻璃的添加使浆液的流动性能变差,增加水玻璃掺量,浆液析水率降低,结石率增加。
The main role of grouting for waterproof plugging and filling reinforcement and the results are largely determined by the performance of the grouting slurry.The performance of the slurry under different water-cement ratios,bentonite and admixture content were summarized by conducting comparative tests.The results indicate that the main factor affecting the performance of the slurry is water-cement ratio.The bentonite reduces the fluidity of the slurry,and the strength of the stone is significantly reduced when the cement content is more than 8%.The effect of the water reducing additives on the fluidity is obvious.The increase of the water content of the slurry will lead the increase of the water content of the slurry and the decrease of the cementation rate.
作者
葛延明
隆威
宋会娟
GE Yanming;LONG Wei;SONG Huijuan(Key Laboratory of Metalogical Prediction of Nonferrous Metals and Geological;Environment Monitoring Ministry of Education,Central South University,Changsha 41008;2.School of Geosciences and Info-Physics,Central South University,Changsha 410083;3.Hunan Provincial Communication Planning Survey and Design Institute.Changsha Hunan410005)
出处
《土工基础》
2018年第4期437-439,448,共4页
Soil Engineering and Foundation
关键词
注浆材料
浆液性能
结石率
强度
Grouting Material
Slurry Performances
Cementation Rate
Strength
