轻骨料预处理工艺对自密实轻骨料混凝土工作性能的影响  

Pretreatment techniques of lightweight aggregate on workability of self-compacting lightweight aggregate concrete

作　　者：王振军[1] 何廷树[2] 

机构地区：[1]长安大学材料科学与工程学院,陕西西安710061 [2]西安建筑科技大学建筑材料研究所,陕西西安710055

出　　处：《混凝土》2009年第3期64-65,89,共3页Concrete

基　　金：长安大学科技基金资助项目(2008Q2)

摘　　要：针对自密实轻骨料混凝土拌合物在大流动度条件下,易于分层而导致工作性不良的现象,采用自行设计的L-800混凝土拌合物流变性能测定仪,研究预吸水和表面裹浆法两种轻骨料预处理工艺对自密实轻骨料混凝土拌合物工作性能的影响。结果表明:骨料预吸水时间没有明显影响拌合物的工作性能,裹浆法对拌合物工作性能改善明显。Mixtures of self-compacting lightweight aggregate concrete are prone to be separated in condition of big flow, which may result in the bad workability of mixtures.L-800 rheological testing apparatus of concrete mixtures was used to study influences of pre-water absorbed time and mortar wrapped method on workability of self-compacting lightweight aggregate concrete.The results indicate that time for lightweight aggre- gate water absorbed does not have evident influence on workability of the mixtures,while method of aggregate wrapped with mortar can erthanee the workability.

关 键 词：自密实轻骨料混凝土 工作性能 预湿时间 裹浆法 流变性能测定仪 

分 类 号：TU528.041[建筑科学—建筑技术科学]