关键词: 灌浆工程, 黏土水泥浆材, 黏土水泥膏浆, 黏土水泥砂膏浆, 黏度, 松软地层

Abstract: In order to systematically study the viscosity time-varying characteristics of clay cement series slurry used in loose and soft ground, a Brookfield +R / S rheometer was used to test the viscosity of slurry. The typical experimental results were analyzed deeply, and the time-varying mathematical model of viscosity with higher fitting coefficient was obtained. The results showed that the viscosity of ordinary clay cement slurry decreased with the increase of water-solid ratio, but increased with the clay content. The sequential change of viscosity can be divided into three stages: decreasing period, rising period and curing period. The viscosity of clay cement pasty slurry or clay cement sand pasty slurry both increase with the content of curing agent. The viscosity of clay cement pasty slurry can be divided into three stages: low viscosity period, rising period and stable period. However, the viscosity of clay cement sand pasty slurry can only be divided into two stages: decreasing stage and stable stage.

Key words: grouting engineering, clay cement slurry, clay cement pasty slurry, clay cement sand pasty slurry, viscosity, loose and soft ground