承重墙用再生混凝土空心砌块的配合比设计
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摘要
利用废弃混凝土加工成的再生骨料制成承重墙用再生混凝土空心砌块。通过正交试验研究再生混凝土砌块配合比中水灰比、再生粗骨料取代率、再生细骨料取代率3个主要因素对其抗压强度的影响规律。试验结果表明,对于多排孔再生混凝土小型空心砌块,选取合适的配合比,强度等级可以达到MU10.0,可作为承重砌块使用。通过试验优化再生混凝土砌块的配合比,可为承重墙用再生混凝土砌块生产和推广提供依据。
This paper engaged in the investigation on the load-bearing hollow blocks derived from waste concrete.The influence rule of the three main factors(water-cement ratio,recycled coarse aggregates replacement ratio,recycled fine aggregates replacement ratio) on compressive strength was studied through the orthogonal test.The experiment results indicated that if the selection of mixed proportion is proper,the recycled concrete multi-row blocks can be used to make bearing wall and its compressive strength can reach to MU10.0.Optimum of mixture proportion of recycled concrete blocks is determined by tests and the foundation to produce and popularize the recycled concrete load-bearing hollow blocks was provided.
This paper engaged in the investigation on the load-bearing hollow blocks derived from waste concrete.The influence rule of the three main factors(water-cement ratio,recycled coarse aggregates replacement ratio,recycled fine aggregates replacement ratio) on compressive strength was studied through the orthogonal test.The experiment results indicated that if the selection of mixed proportion is proper,the recycled concrete multi-row blocks can be used to make bearing wall and its compressive strength can reach to MU10.0.Optimum of mixture proportion of recycled concrete blocks is determined by tests and the foundation to produce and popularize the recycled concrete load-bearing hollow blocks was provided.
引文
[1]肖建庄,谢贺,王长青,等.汶川地震灾区建筑废物统计分析[J].四川大学学报(工程科学版),2009,41(3):188-194.
[2]肖建庄,王幸,胡永忠,等.再生混凝土空心砌块砌体受压性能[J].结构工程师,2006,22(3):68-71.
[3]肖建庄,黄江德,李宏,等.灾后重建再生砌块砌体结构性能和设计研究[J].四川大学学报(工程科学版),2009,41(3):202-208.
[4]丁帅,孙伟民.再生混凝土小型空心砌块砌体基本力学性能研究[J].新型建筑材料,2010(4):38-40.
[5]白国良,张锋剑,安昱峄.再生混凝土砌块抗压强度和配合比试验研究[J].建筑结构,2010,40(12):128-134.
[6]许建荣,王瑜.混凝土空心砌块配合比设计中参数的优化[J].新型建筑材料,2008(7):14-17.
[7]单维升,陈素华.普通混凝土小型空心砌块配合比设计[J].砖瓦世界,2005(5):80-84.
[8]王惊隆.不同配合比对再生混凝土抗压强度的影响分析研究[J].中外建筑,2008(8):194-195.
[2]肖建庄,王幸,胡永忠,等.再生混凝土空心砌块砌体受压性能[J].结构工程师,2006,22(3):68-71.
[3]肖建庄,黄江德,李宏,等.灾后重建再生砌块砌体结构性能和设计研究[J].四川大学学报(工程科学版),2009,41(3):202-208.
[4]丁帅,孙伟民.再生混凝土小型空心砌块砌体基本力学性能研究[J].新型建筑材料,2010(4):38-40.
[5]白国良,张锋剑,安昱峄.再生混凝土砌块抗压强度和配合比试验研究[J].建筑结构,2010,40(12):128-134.
[6]许建荣,王瑜.混凝土空心砌块配合比设计中参数的优化[J].新型建筑材料,2008(7):14-17.
[7]单维升,陈素华.普通混凝土小型空心砌块配合比设计[J].砖瓦世界,2005(5):80-84.
[8]王惊隆.不同配合比对再生混凝土抗压强度的影响分析研究[J].中外建筑,2008(8):194-195.
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