不同减水剂及其复掺对碱矿渣水泥性能的影响  

Effect of Super Plasticizer on Properties of Alkali-Activated Slag

作　　者：陈科[1] 杨长辉[1] 于泽东[1] 赵爽[1] 潘群[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045

出　　处：《土木建筑与环境工程》2012年第1期124-129,共6页Journal of Civil,Architectural & Environment Engineering

基　　金：国际科技合作计划项目(科技部)(国科发技2009-612)

摘　　要：选用萘系高效减水剂(萘系)、木质素磺酸钙(木钙)、葡萄糖酸钠、砂浆塑化剂、C18H29SO3Na、C15H34ClN,测试其对碱矿渣水泥砂浆性能的影响。结果表明:木钙和萘系均对碱矿渣水泥砂浆有一定的塑化作用,且前者比后者的效果明显;萘系与引气剂复掺较单掺萘系对碱矿渣水泥砂浆的塑化作用明显;木钙与萘系复掺,较单掺一种减水剂对碱矿渣水泥砂浆的塑化作用效果明显;在相同用水量情况下,木钙可提高碱矿渣水泥砂浆的强度,而萘系会降低碱矿渣砂浆的强度。木钙对碱矿渣水泥的凝结时间影响较大,掺木钙的碱矿渣水泥流动度经时损失较小。With polynaphthalene sulphona,lingosulphonate based plasticizer,Sodium gluconate,Mortar plasticizer,C18H29SO3Na,C15H34ClN,the performance of alkali-activated slag mortar was teseed.The results show that lingosulphonate based plasticizer and polynaphthalene sulphona have some plasticizing effect for alkali-activated slag mortar,and the effect of the former than the latter obviously.Plasticizing effect of polynaphthalene sulphona compound mixed with air-entraining agent than single-doped polynaphthalene sulphona obviously.Plasticizing effect of polynaphthalene sulphona compound mixed with lingosulphonate based plasticizer than single-doped super plasticizer obviously.When the same amount of water,lingosulphonate based plasticizer can increase the early strength of alkali activated slag mortar,polynaphthalene sulphona can reduce the early strength.The incorporation of slag in the mix of alkali and super plasticizer can increase the strength of alkali activated slag mortar.Lingosulphonate based plasticizer on the setting time of alkali-activated slag have a greater impact,alkali-activated slag mixed lingosulphonate based plasticizer fluidity smaller through time.

关 键 词：碱矿渣 减水剂 塑化作用 强度 

分 类 号：TU528[建筑科学—建筑技术科学]