岩土工程学报2017，Vol.39Issue(2)：201-209,9.DOI:10.11779/CJGE201702002
SJP注浆浆液水化进程与流变特性研究
Hydration process and rheological properties of SJP cement paste
摘要
Abstract
Qwing to that the common cement paste used in the complex soil strata with wide steep seams and loose space cannot fill firmly and run along the gaps, a new type of SJP cement paste is developed, which has great initial fluidity and good groutability. Its apparent viscosity can suddenly increase and its fluidity of the rheological properties can suddenly drop during pumping. The SJP cement paste is made from modified fiber, CaSi early strength agent and cement, with the amount of additive agent of 2%~2.5%. The additives first form the solvent membrane in the surface of cement particles, which can adjust the ion concentration of cement hydration and CaSi cationic. The role of controlling the speed of nucleation at the acceleration stage is achieved. The retardation stage of SJP paste is controlled by the nucleation and diffusion process, and the stable stage is mainly controlled by the effect of diffusion. Because of the high speed of hydration, controllable flowing time and are closely cemented hydration products, the later strength of solidified paste is improved by 15%~25% higher than that of the common cement paste. The SJP paste can solve the problem of higher early strength and lower later strength. So it has got a larger range of popularization and application.关键词
SJP注浆材料/黏时变性/水化历程/水化动力学Key words
SJP cement paste/time-varying property/hydration process/hydration kinetics分类
建筑与水利引用本文复制引用
裴向军,张佳兴,王文臣,杨福田..SJP注浆浆液水化进程与流变特性研究[J].岩土工程学报,2017,39(2):201-209,9.基金项目
国家自然科学基金项目(40402025) （40402025）
成都理工大学地质灾害 防 治 与 地 质 环 境 保 护 国 家 重 点 实 验 室 团 队 重 点 项 目(SKLGP2014Z001) （SKLGP2014Z001）
