新混凝土与碳化混凝土粘结的力学性能试验研究  

Experimental study on mechanical properties of bonding of new concrete and carbonated concrete

作　　者：袁群 马峰 曹宏亮 史长城 冯侠 冯凌云 

机构地区：[1]河南省水利科学研究院,河南郑州450003 [2]河南省水利工程安全技术重点实验室,河南郑州450003 [3]国网新源控股有限公司回龙分公司,河南南阳473000

出　　处：《新型建筑材料》2014年第2期38-42,共5页New Building Materials

基　　金：河南省重点科技攻关项目(092102310193)

摘　　要：设计了8种混凝土配合比方案,通过测试其力学与耐久性能,从中选出强度满足要求、抗渗性能与防碳化性能较好的混凝土作为修补用的新混凝土;设计了36种界面剂配合比方案,将界面剂涂刷于混凝土表面进行碳化试验,选出防碳化效果好的5种界面剂应用于新混凝土与碳化混凝土的粘结;设计了5种新混凝土与碳化混凝土的粘结方案,测试了新混凝土与碳化混凝土粘结的劈拉强度、抗折强度与斜剪强度;对比分析了界面剂种类及碳化对新混凝土与碳化混凝土粘结性能的影响,并从机理上进行了阐述。In the study 8 concrete mixing proportion designs are described and the concrete design with better anti-perme- ability and anti-carbonation performance that satisfies strength requirement is selected for concrete repairing. In 36 surfaetant mix- ing proportion designs,5 surfactant designs are selected for bonding new concrete to old concrete after carbonation test of brushing surfactant over concrete surface. 5 designs of bonding new concrete to carbonated concrete are used for test of splitting tensile strength, rupture strength and oblique shear strength. The effect of different suffactants and carbonation on mechanical properties of bonding new concrete to carbonated concrete are compared and analyzed and the mechanism are described.

关 键 词：新老混凝土粘结 碳化混凝土 界面剂 劈拉强度 抗折强度 斜剪强度 

分 类 号：TU528[建筑科学—建筑技术科学]