论文部分内容阅读
经国内外研究证明,将再生骨料用于制备混凝土被证明是完全可行的。由于再生骨料在处理过程中表面难免会附有水泥砂浆,表面比较粗糙,且在生产过程中受到机械切割破碎和震荡作用,骨料表面微裂纹增多,致使再生骨料的品质指标低于天然骨料;并且由于原材料及生产工艺的原因,再生骨料经常会混有杂质,这些都会影响再生骨料的质量,因此也限制了再生骨料的应用,再生骨料在混凝土中应如何应用?虽然目前再生骨料已经有相关标准,但人们在观念上不太能接受将再生骨料应用于工程,尤其是结构工程中。本期特别策划邀请大家谈谈再生骨料在混凝土中应用的技术和观念上的问题。
The domestic and foreign studies have proved that the use of recycled aggregate for the preparation of concrete proved to be completely feasible. As the recycled aggregate will inevitably be accompanied by cement mortar on the surface, rough surface, and in the production process by mechanical cutting fragmentation and concussion, the aggregate surface microcracks increased, resulting in recycled aggregate quality indicators below natural Aggregate; and because of the raw materials and production processes, recycled aggregate often mixed with impurities, which will affect the quality of recycled aggregate, which also limits the application of recycled aggregate, recycled aggregate in concrete should be how to use? Although the recycled aggregate has been the relevant standards, but people are not conceptually acceptable to recycled aggregate used in engineering, especially structural engineering. This special planning invited everyone to talk about the recycled aggregate in concrete technology and the concept of the problem.