再生砂对砂浆的施工和易性及抗压强度的影响.pdf

粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION2011No.3 再生砂对砂浆的施工和易性及抗压强度的影响 The Influence of Recycled Sand on Construction Workability and Compressive Strength of Mortar段邦政,鄢朝勇,朱攀,肖枭,孙少君 (襄樊学院建筑工程学院,湖北襄樊441003) 摘要:将湖北襄阳地区的建筑垃圾粉碎筛分得到再生砂,以再生砂部分或全部取代建筑砂浆中的天然砂,用粉煤 灰作为掺加料,制作再生砂浆,研究再生砂对砂浆和易性及抗压强度的影响。在砂浆流动性基本相同的情况下,随再生 砂掺量增加,砂浆的用水量明显增大、保水性趋于提高。再生砂浆在再生砂取代量为40%时获得良好的骨料级配,强度 提高。 关键词:建筑垃圾;再生砂浆;和易性抗压强度 中图分类号:TU57*8.1 文献标识码:A 文章编号:1005-8249(2011)03-0017-03 Duan Bang-zheng ;Yan Chao-yong ;Zhu Pan ;Xiao xiao ;Sun ShaojunSchool of Civil Engineering and Architecture ,Xiangfan University ,Xiangfan 441003 ,Hubei ,PRC ) Abstract :Construction waste in HuBei Xiangyang region can be by screening the crushed sand ,part or all of the recycled sand toreplace natural sand mortar ,with ash extract as admixture to reeycled aggregate mortar .It researched on the inlluenceof recycled sand on mortar workability and pressive strength .Under the same cireumstances of mortar liquidity ,with the recycled sand contentincreased ,mortar's retention tends to increase and water's dosage tends to increase too .When the recycled sand replace 40% of the recycledaggregate mortar ,the mortar gets the good aggregat...