(西南交通大学岩土所， 成都 610031)
摘 要: 结构剂加量、水泥加量与粘土原浆粘度对粘土固化浆液的初凝时间都有影响, 它们的影响程度各不相同, 其中结构剂加量为2%时, 初凝时间最 短, 仅几秒钟。粘土固化浆液塑性强度增长缓慢, 早期强度低, 后期强度(第18天的塑性强度) 可达数兆帕,调整水泥加量、结构剂加量与原浆粘度可调节浆液塑性强度值。
关键字: 粘土固化浆液 初凝时间 塑性强度
（Geotechnical Engineering Institute, Southwest Jiaotong Univers ity, Chengdu 610031）
Abstract:Gelling time of the Clay Hardening Grouts (CHG ) can be adjusted from some dozens minutes to seconds by adding cement and constructure agent and adjusting the viscosity of the mud. Constructional agent being 2%, gel time is the shortest, about seconds. Content of cement and viscosity of clay mud will, also, affect the gelling time, but their effects are not the same . The increasing rate of plastic strength (Ps) of the grouts is slow, the early Ps is lower, the later Ps may be 1～2MPa. After 18th day, Ps of the grouts may be some MPa by adjusting the content of cement, structural agent and viscosity of clay mud.
Key words: clay hardening grouts gelling time plastic strength
