引气混凝土的滑模施工性能研究  

Performance study on the slip-form construction feature of air-entrained cement concrete

作　　者：袁野真[1,2] 田波[2] 刘英[2] 侯子义[1] 

机构地区：[1]河北工业大学土木工程学院,天津300401 [2]交通运输部公路科学研究院,北京100088

出　　处：《混凝土》2013年第5期147-150,共4页Concrete

基　　金：中央级公益性科研所基本科研业务费专项资金项目(S282012056);广西交通科技项目(桂交综合发[2009]95号)

摘　　要：结合滑模施工机理,系统的研究了引气混凝土材料的滑模施工特性。研究发现:在低坍落度混凝土中加入引气剂,可以在轻微提高混凝土坍落度的情况下,增强混凝土的振动液化特性;同时通过引气作用,改变了振动液化混凝土结构内部的摩擦机制,从而提高了摊铺机振捣棒的有效作用范围。振捣棒在引气混凝土中的有效作用范围提高了62%;同时由于引气混凝土振动之后振动黏度系数的增加,滑模施工水泥混凝土路面的立模特性得到显著提高。Based on sliding mode construction mechanism, the construction feature of the air entrained cement concrete was researched. The results indicated that.adding air entraining agent in low slump concrete, could improve its vibration liquefaction characteristics without changing slumps too much.Through the air entraining effect, changed the friction mechanism internal the concrete materials, improve the effective range of the vibrating needle.The effective range of the vibrating needle could increased 62% in the air-entrained cement concrete. Because vibration can improve the vibrating viscosity coefficient of the air-entrained cement concrete, so through the air entraining effect, could improve the formwork performance of the cement concrete pavement.

关 键 词：引气剂 滑模施工 振动能量 立模特性 

分 类 号：TU528.755.6[建筑科学—建筑技术科学]