含泥量对再生骨料混凝土性能的影响
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摘要
保持水泥用量不变,用一定量的泥取代粉煤灰研究泥对新拌再生骨料混凝土的工作性、硬化后再生骨料混凝土的力学性以及早期收缩性的影响。试验结果表明:不同化学成分的泥对再生骨料混凝土流动度、强度的影响各不相同,再生泥比表土泥对再生骨料混凝土的影响小;泥取代粉煤灰的量与再生骨料混凝土的抗压强度成反比;泥取代粉煤灰的量与再生骨料混凝土的早期收缩成正比。
To research the effect of mud content on workability,mechanical resistance and early shrinkage of hardened aggregate concrete regeneration of recycled aggregate concrete,the fly ash is replaced by a certain amount of mud in case of the same amount of cement.The results show that with different chemical composition of the mud on the influence of the fluidity and the intensity of recycled aggregate concrete are not identical.The regeneration mud has more impact on recycled aggregate concrete than the topsoil mud.The replace amount of mud is inversely proportional to the compressive strength of recycled aggregate concrete,and proportional to the early contraction of recycled aggregate concrete.
To research the effect of mud content on workability,mechanical resistance and early shrinkage of hardened aggregate concrete regeneration of recycled aggregate concrete,the fly ash is replaced by a certain amount of mud in case of the same amount of cement.The results show that with different chemical composition of the mud on the influence of the fluidity and the intensity of recycled aggregate concrete are not identical.The regeneration mud has more impact on recycled aggregate concrete than the topsoil mud.The replace amount of mud is inversely proportional to the compressive strength of recycled aggregate concrete,and proportional to the early contraction of recycled aggregate concrete.
引文
[1]宋少民,孙凌.土木工程材料[M].2版.武汉:武汉理工大学出版社,2010.
[2]袁杰,范永德,葛勇,等.含泥量对高性能混凝土耐久性的影响[J].混凝土,2003(8):31-33.
[3]王冠锋,马军委,张涛.泥含量对掺聚羧酸减水剂混凝土的影响及措施[J].中国建材科技,2011(3):3-5.
[4]岑国平,洪刚,王金华,等.高原机场道面混凝土含气量的影响因素及控制措施[J].施工技术,2012,41(22):33-35.
[5]周永祥,王永海,王思娅,等.石灰石粉的特性及对混凝土性能的影响[J].施工技术,2014,43(9):23-27.
[6]蒋业浩,姜艳艳,吴书安,等.建筑垃圾再生骨料清洁生产及工程应用研究[J].施工技术,2014,43(24):37-39,100.
[2]袁杰,范永德,葛勇,等.含泥量对高性能混凝土耐久性的影响[J].混凝土,2003(8):31-33.
[3]王冠锋,马军委,张涛.泥含量对掺聚羧酸减水剂混凝土的影响及措施[J].中国建材科技,2011(3):3-5.
[4]岑国平,洪刚,王金华,等.高原机场道面混凝土含气量的影响因素及控制措施[J].施工技术,2012,41(22):33-35.
[5]周永祥,王永海,王思娅,等.石灰石粉的特性及对混凝土性能的影响[J].施工技术,2014,43(9):23-27.
[6]蒋业浩,姜艳艳,吴书安,等.建筑垃圾再生骨料清洁生产及工程应用研究[J].施工技术,2014,43(24):37-39,100.