废混凝土制备GRC的研究  

Study on the Preparation of Glass Fiber Reinforced Cement Using Waste Concrete

作　　者：项斌峰 张利俊 王灵秀 秦宪明 蔡素燕 邱洪华 李维 

机构地区：[1]中国建材检验认证集团北京天誉有限公司,北京100113

出　　处：《中国建材科技》2018年第3期15-18,共4页China Building Materials Science & Technology

基　　金：北京市通州区科技计划(KJ2017CX038)

摘　　要：本文对废旧混凝土制备再生高品质GRC板材进行了研究,通过物理性能、力学性能和抗冻性三方面对再生GRC板材进行性能表征,同时探讨了废混凝土的取代掺量对再生GRC板材各项性能的影响。试验结果如下:采用喷射成型工艺,再生GRC的力学性能在废混凝土取代率达到30%时达到最优,而后随着掺量的增加力学性能逐渐降低。25次冻融循环后再生GRC没有发现冻融破坏现象,且质量损失在0.25%以下。The preparation of high quality regeneration GRC plate using waste concrete is studied in this paper.Through physical performance, mechanical property and frost resistance in the face of characterization of regeneration GRC plate, the effect of dosage replacement of waste concrete on the regeneration GRC plate performance is discussed.The experimental results are as follows： with the use of the injection molding process, the regeneration GRC mechanical properties can be optimal when the waste concrete reaches 30%, and then gradually reduce with the increase of dosage replacement.After 25 freeze-thaw cycles, the phenomenon of freeze-thaw damage cannot be found in regeneration GRC, along with the quality loss less than 0.25%.

关 键 词：废旧混凝土 GRC 力学性能 抗冻性 

分 类 号：X799.1[环境科学与工程—环境工程] TU528.581[建筑科学—建筑技术科学]