粉煤灰综合利用 2013 NO.2FLYASHCOMPREHENSIVEUTILIZATION 专题研究
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
曲烈，李剑，张娜，孙树栋，杨久俊，何文龙
（天津城市建设学院材料科学与工程学院，天津300384） 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，蒸系减水 剂：木质素减水剂为46，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，蔡系：木质素减水剂为64， 掺量为1%时，改性生土泥浆的分散效果最好。
掺木质素和黎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=11和复合减水剂掺量为1%，生土改性材料抗压强度达到40MPa。
关键词：生土改性材料；减水剂；激发剂；泥浆流变性；力学性能 中图分类号：TU502文献标识码：A文章编号：1005-8249(2013)02-0008-05 Qu Lie,Li Jian,Zhang Na,Sun Shudong, Yang Jiujun,He Wenlong (School of Materials Science and Engineering at Tianjin Institute of Urban Construction,Tianjin China, 300384) Abstract;The rheological and mechanical properties of rawsoil material modified by blending lignin and naphthalene series redue ing water agent and activating agent were investigated. The testing results are as follows: when water cement ratio is 0, 6, adding 1% mass pound reducing water agent which naphthalene to lignin ratiois 46, the dispersion effet of modified raw soil slurry is best; meanwhile the water cement ratiois 0.5, ading 1% masspound reducing water agent which naphthaliene to ignin ratio is 6 4, the modified raw soil slurry also has the best dispersion effeet. The strength of raw soil modified by lignin and naphthalene pound reduc- ing water agent and activatoris imperoved the most : and the pressive strength of modified raw soil materials, with 1% pound re ducing water agent which naphthalene to lignin ratio is 1 1, has archived to 40 MPa. Keywords:modiied raw soil material; reducing water agent; activator; rheological property of slurry : mechanical property 随着人们对土壤固化问题越来越重视，越来越多表面活性剂，它已从木质素磺酸盐类、萘系减水剂发展 的土壤固化剂被开发出来，如离子交换类ISS土壤固到聚羧酸减水剂3。
在实际应用中，为克服混凝土的 化剂，它是一类表面活性剂的土壤固化剂，具有高电荷经时性损失问题，人们采用缓凝剂木质素和萘系减水 强度，其解离出来的阳离子可以将土粒上的阳离子置剂复合的办法。
事实上，混凝土减水剂作为表面活性 换出来，减薄了扩散层的厚度，电势降低，使土粒之间剂，它也可改变土体的电荷电势，并改变泥浆中双电层 的排斥力得到了降低，这样就可以得到更加密实的压厚度，如果将混凝土减水剂应用于土壤...
