高强轻集料混凝土工作性能优化的试验研究  

Experimental optimization of lightweight aggregate concrete on workability

作　　者：丁庆军[1] 时建刚[1] 姜从盛[1] 王发洲[1] 

机构地区：[1]武汉理工大学材料学院,湖北武汉430070

出　　处：《混凝土》2007年第1期34-36,共3页Concrete

基　　金：湖北省重点科技攻关项目(2001AA103B01)

摘　　要：以分层度、坍落度、扩展度为新拌混凝土工作性能的评价指标,研究了矿物掺合料、砂率、增粘剂和减水剂对高强轻集料混凝土(LWAC)工作性能的影响。结果表明:增粘剂、减水剂是影响LWAC工作性能的主要因素,矿物掺合料、砂率对LWAC工作性能的影响则较小;在相同条件下,复掺减水剂和增粘剂比单掺减水剂更能改善轻集料混凝土的匀质性,同时对抗压强度也有所提高。最后提出了高强轻集料混凝土工作性能优化的试验配合比。Influence of mineral admixtures, sand ratio, tackifier and water reducer on the workability of the high strength lightweight aggregate concrete（LWAC ） are studied by taking advantage of segregation degree, slump and dispersion as evaluating indicators. The results show that tackifier and water reducer are more evident than mineral admixtures and sand ratio to the workability of LWAC ;Under the same conditions, tackifier and water-reducer complex than single water reducer even better improve the quality of lightweight aggregate concrete,while compressive strength has been upgraded. Finally, the high strength lightweight aggregate concrete test mix proportion to optimize workability is put forward.

关 键 词：轻集料混凝土 工作性能 分层度 坍落度 扩展度 

分 类 号：TU528.2[建筑科学—建筑技术科学]