制备工艺对再生混凝土耐久性影响研究  

Effects of manufacture technology on durability of recycled concrete

作　　者：王玲玲[1] 陈彦文[1] 潘文浩[1] 孙小巍[1] 

机构地区：[1]沈阳建筑大学材料科学与工程学院,辽宁沈阳110168

出　　处：《混凝土》2012年第11期142-144,共3页Concrete

基　　金：沈阳建筑大学科研基金(2011108)

摘　　要：通过①单独采用再生粗骨料强化处理工艺;②单独采用再生混凝土二次搅拌工艺;③同时采用再生粗骨料强化处理工艺和再生混凝土二次搅拌工艺等三种方式制备不同再生骨料掺量的再生混凝土,分析其性能的变化规律。试验结果表明:三种工艺均可不同程度地提高再生混凝土的28 d抗压强度、抗冻性和抗硫酸盐侵蚀性。相比之下,工艺③是综合提高再生混凝土耐久性的最佳制备工艺。Adopted three kinds of manufacture technologies to analyze the modification laws about the properties of recycled concrete （RC） with different adding quantity of recycled coarse aggregates.Technology ① ： Only recycled coarse aggregates were strengthened; Technology ② ： Only Secondary Mixing of RC was used;Technology ③ ：Both recycled coarse aggregates strengthening and secondary mixing of RC were applied.Results showed that all the above three kinds of technologies could improve 28 d strength, frost resistance and sulfate corrosion resistance of RC in different degrees, however Technology ③ was the best method to manufacture RC and obtain better durability.

关 键 词：再生混凝土 二次搅拌工艺 强化处理 抗冻性 抗硫酸盐侵蚀性 

分 类 号：TU528.06[建筑科学—建筑技术科学]