摘要
固渣是混凝土生产过程中,清洗生产设备和运输设备产生废水经砂石分离机分离出骨料后经沉降形成固体废弃物。用固渣等质量替代基准配合比中的粉煤灰,通过单因素试验和综合分析法,比较不同固渣替代量对混凝土性能的影响。结果表明:随着混凝土强度等级的提高,固渣替代量对混凝土工作性的影响逐渐减小。综合考虑混凝土的工作性和抗压强度,对于C25、C30、C35、C50四个强度等级的混凝土,其固渣使用量宜控制在4kg/m^3内。
Solid waste recovered from the concrete industry is separated from wastewater produced by clean production equipment and transportation equipment by sand and stone separators. Solid waste is used to replace the reference proportion of fly ash, and the performance of concrete with different solid waste replacement rates is compared by single factor test and comprehensive analysis method. The results show that with the increase of concrete strength, the effect of the solid waste replacement rate on the workability of concrete is gradually reduced. Considering the workability and compressive strength of concrete, for concrete of C25, C30, C35 and C50, the amount of solid waste used should be controlled within 4 kg/m^3.
作者
彭孟啟
张桥
孙国彬
Peng Mengqi;Zhang Qiao;Sun Guobin;
出处
《中国建材科技》
2018年第4期54-57,共4页
China Building Materials Science & Technology
关键词
混凝土
固渣
粉煤灰
concrete
solid waste
fly ash
