再生微粉对混凝土的工作性及力学性能的影响研究.pdf
文档页数：4文档大小：2MB文档格式：pdf粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2016N0.3 试验与应用 再生微粉对混凝土的工作性及力学性能的影响研究* Influence of Recycled Powders on Workability and Mechanical Properties of Concrete 张修勤，李秋义，谢汝朋，王忠星，曹瑜斌 (蓝色经济区工程建设与安全协同创新中心，青岛理工大学，山东青岛266033) 摘要：再生微粉是废弃混凝土颗粒整形过程中产生的细小粉状颗粒，其对环境以及人的身体健康造成威胁.本 文研究其基本性能，并将其作为矿物掺合料制备混凝土，研究再生微粉不同掺量时对混凝土的工作性和抗压强度的影 响，研究表明：再生微粉掺量的增加使得混凝土的需水量增大，因此其对混凝土的工作性产生不利影响；对于混凝土的力 学性能，在再生微粉的掺量为1%以内，混凝土的抗压强度减小幅度较小，当掺量较大时，混凝土的抗压强度大幅减小. 关键词：再生微粉；混凝土；工作性；抗压强度 中图分类号：TU521.2*5 文献标识码：A 文章编号：1005-8249(2016)03-0003-04 Zhang Xiuqin Li Qiuyi Xie Rupeng Wang Zhongxing Cao Yubin (Collaborative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic ZoneSchool of Civil Engineering Qingdao Technological University Qingdao 266033) Abstract:Regeneration powder is fine powder particles genetated in the process of waste courete partick shaping which pose a threat to the environment and human health.In this paper the basic properties and as a mineral admixture in concrete preparation the impact on the work of different content and the pressive strength of concrete is studieded.The study showed that:Increasing powder content of regeneration makes concrete water demand increases so it has adverse impact on the work of the concrete;for the mechanical properties of concrete in the regeneration of fine powder content is less than 10% the pressive strength of concrete to reduce the amplitude is small when the content is large concrete the pressive strength greatly reduc...
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