掺复合减水剂生土改性材料流变与力学性能研究  

Research on the Rheological and Mechanical Properties of Modified Raw Soil Material adding Compound reducing Water Agent

作　　者：曲烈[1] 李剑[1] 张娜[1] 孙树栋[1] 杨久俊[1] 何文龙[1] 

机构地区：[1]天津城市建设学院材料科学与工程学院,天津300384

出　　处：《粉煤灰综合利用》2013年第2期8-11,15,共5页Fly Ash Comprehensive Utilization

基　　金：国家自然科学基金(50772071;50972099);天津市高等教育科技发展基金计划项目(20110910);天津城市建设学院2011年学生科研立项项目部分资助

摘　　要：研究了掺木质素和萘系减水剂与激发剂的改性生土材料流变和力学性能。当水灰比为0.6时,萘系减水剂:木质素减水剂为4:6,掺量为1%时,改性生土泥浆的分散效果最好;当水灰比为0.5时,萘系:木质素减水剂为6:4,掺量为1%时,改性生土泥浆的分散效果最好。掺木质素和萘系复合减水剂与激发剂的改性生土材料,其生土强度提高最大;复合减水剂的比例为萘系:木质素=1:1和复合减水剂掺量为1%,生土改性材料抗压强度达到40MPa。The rheological and mechanical properties of raw--soil material modified by blending lignin and naphthalene series reduc ing water agent and activating agent were investigated. The testing results are as follows： when water -- cement ratio is 0.6, adding 1 mass compound reducing water agent which naphthalene to lignin ratio is 4：6, the dispersion effect of modified raw soil slurry is best~ meanwhile the water --cement ratio is 0.5, adding 1 ~ mass compound reducing water agent which naphthalene to lignin ratio is 6：4, the modified raw soil slurry also has the best dispersion effect. The strength of raw soil modified by lignin and naphthalene compound reduc- ing water agent and activator is imperoved the most ; and the compressive strength of modified raw soil materials, with 1 ~ compound re- ducing water agent which naphthalene to lignin ratio is 1：1, has archived to 40 MPa.

关 键 词：生土改性材料 减水剂 激发剂 泥浆流变性 力学性能 

分 类 号：TU502[建筑科学—建筑技术科学]