建筑垃圾再生微粉基本材性及对水泥胶砂性能的影响
Basic Performance of Construction Waste Recycled Powder and Its Influence on Properties of Cement Mortar
关键词:
再生微粉;水泥胶砂;胶砂流动度;抗折强度;抗压强度
Key words:
Recycled powder; Cement mortar; Mortar fluidity; Flexural strength; Compressive strength
刊期:
2019年第3期
DOI:
10.19761/j.1000-4637.2019.03.093.04
文章编号:
基金项目:
国家“十三五”国家重点研发计划项目(2017YFC 0703305)。
作者:
周文娟1,季志远1,赵 磊1,何更新2
单位:
1.北京建筑大学 北京未来城市设计高精尖创新中心,100044; 2.中国建筑科学研究院有限公司,北京100013
摘要
摘 要:为探索建筑垃圾再生微粉用作掺合料的可行性,制备了三种细度的废砖、废混凝土再生微粉,测试其物化性质,并研究不同组成、细度、掺量的再生微粉对水泥胶砂性能的影响。结果表明,组成对水泥胶砂性能影响不大,细度和掺量有较大影响;Ⅱ级再生微粉工作性较好、强度较高;掺量在20%以内对胶砂流动性的降低并不明显,且抗压、抗折强度比分别在85%、75%以上。
Abstract: In order to explore the feasibility of using recycled powder as admixture,waste bricks and waste concrete recycled powder were prepared in three kinds of fineness. The physicochemical properties were tested and the effects of different compositions, fineness and dosage of recycled powder on the performance of cement mortar were studied. The results show that the composition has little effect on the performance of cement mortar, and the fineness and dosage has great influence. The grade II recycled powder has better working performance and higher strength; the reduction of the fluidity of the mortar within 20% is not obvious, and the compressive and flexural strength ratios are above 85% and 75% respectively.
结论
参考文献
引用本文
周文娟,季志远,赵磊,等.建筑垃圾再生微粉基本材性及对水泥胶砂性能的影响[J].混凝土与水泥制品,2019(3):93-96.
ZHOU W J,JI Z Y,ZHAO L,et al.Basic Performance of Construction Waste Recycled Powder and Its Influence on Properties of Cement Mortar[J].China Concrete and Cement Products,2019(3):93-96.
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