活性粉末处理工艺对再生混凝土强度的影响

Effect of Reactive Powder Processing Technology on the Strength of Recycled Concrete

用活性粉末浆液处理再生粗骨料,设计了两种再生骨料强化预处理工艺和三种再生骨料裹浆即时处理工艺。分别测试了由其配制的再生混凝土7d、14d、28d立方体抗压强度和28d劈裂抗拉强度。试验结果表明,工艺2优于工艺1,工艺3的抗压强度和劈裂抗拉强度均为最低,工艺4优于工艺3,5种工艺中工艺5为最优工艺。

Recycled coarse aggregate was processed with reactive powder slurry. Two types of reinforced pretreatment technology of recycled aggregate and three types of instant treatment technology of recycled aggregates wrapped slurry were designed. 7 d, 14 d and 28 d cube compressive strength and 28d splitting tensile strength of recycled concrete were tested. Test results show that the process II is better than that of I, the compressive strength and splitting tensile strength of process III are the lowest, process IV is better than that of III, and process V is the best among the five kinds of process.