水泥-生石灰双掺处理淤泥含水率变化规律  

Change rule of water content of dredged clays by adding cement and quick lime

作　　者：朱红伟[1] 江帅[1] 张晴波[1] 常防震[1] 王健[1] 刘功勋[1] 

机构地区：[1]中交疏浚技术装备国家工程研究中心有限公司航道疏浚技术交通行业重点实验室,上海201208

出　　处：《中国港湾建设》2015年第4期33-38,共6页China Harbour Engineering

基　　金：航道疏浚技术交通行业重点实验室开放课题(No.2014.05.SD.20)

摘　　要：通过固化剂配比试验,研究水泥和生石灰处理淤泥的含水率变化规律。结果表明随着固化剂掺灰比的增加,淤泥处理土的含水率呈现逐渐降低的趋势。在同一含水率和掺灰比条件下,水泥对淤泥含水率的降低效果要好于生石灰。初始含水率对生石灰处理效果的影响要比水泥大,初始含水率越高,生石灰的处理效果越接近于水泥。水泥处理土的含水率均随着龄期的增加而减小,3 d龄期后含水率降低率的增速逐渐变缓。在掺灰比等于或大于7%时,龄期对固化处理效果影响较大。水泥-生石灰双掺处理淤泥时,随着水泥掺量的减少和生石灰掺量的增加,淤泥处理土的含水率降低率呈现先增加后减小的变化规律。同时,在水泥或生石灰掺量最大以及比值为1时均达到最佳处理效果。The variation of sludge water content treated with cement and quick lime was studied by experimental ratio tests. Results show that water content appears a gradual decrease with the increase of lime ratio. On the conditions of same water con-tent and lime ratio, the effect of cement reduced the sludge water content is better than quick lime. The effect of initial water content on the quick lime is more than that of cement, the higher the initial water content, the closer the treatment effect of quick lime got to cement. Water content of cement treated soil decreased with curving time, and the decrease rate of the water content is gradually slow after three days. When lime ratio was equal to or greater than 7%, the curving time makes greater im-pact on curing effect. When the cement and quick lime were mixed to dredge clays, with the decrease of cement and increase of quick lime, the water content decrease ratio of the treated soils decreased after the first increase. Meanwhile, on the condition of maximum ratio of cement or quick lime, as well as 1 were the best ratios that got better treatment effect.

关 键 词：配比试验 水泥 生石灰 掺灰比 含水率 

分 类 号：U654[交通运输工程—港口、海岸及近海工程] TU447[交通运输工程—船舶与海洋工程]