(1 广西大学土木建筑工程学院， 南宁 530004； 2  广西防灾减灾与工程安全重点实验室， 南宁 530004)

［摘要］以取代率为主要变量，设计和制作了18个钢筋再生混凝土试件（其中梁、板、柱各6个），分别进行了受弯、受压等力学性能试验，获取了各种取代率下试件的力学性能指标，并进行对比分析。结果表明：随着取代率的增加，钢筋再生混凝土梁的极限承载力呈下降趋势；钢筋再生混凝土单向板和双向板的开裂荷载均有较大程度的下降；钢筋再生混凝土偏压柱的极限承载力略为下降。综合考虑钢筋再生混凝土构件的力学性能和经济性能，认为当取代率为50%时优于100%时。

［关键词］钢筋再生混凝土; 构件; 取代率; 极限承载力

中图分类号：TU375         文献标识码：A         文章编号：1002-848X(2014)09-0060-05

Influence analysis of recycled coarse aggregate replacement ratio on mechanical behavior of reinforced recycled concrete components

Chen Zongping1,2, Chen Yuliang1, Zhan Donghui1, Xue Jianyang2

 (1 College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; 2 Guangxi Key Laboratory of Disaster Prevention and Structural Safety, Nanning 530004, China)

Abstract: Taking replacement ratio as the main parameter, 18 reinforced recycled concrete specimens were designed, including 6 beams, 6 slabs and 6 columns. Mechanical properties tests as bending test and compression test were carried on respectively. Then mechanical performance indexes under each replacement ratio were obtained and compared. The research results show that with the increment of the replacement ratio, ultimate bearing capacity of beams decreases. Cracking loads of one-way slabs and two-way slabs decrease greatly. Ultimate bearing capacity of eccentric-loading columns decreases a little. Considering comprehensively the mechanical properties and economic performance index, it is concluded that 50% replacement ratio of reinforced recycled concrete brings good performance which is better than 100% replacement ratio of reinforced concrete.

Keywords: reinforced recycled concrete; component; replacement ratio; ultimate bearing capacity

*国家自然科学基金项目（50908057），“八桂学者”建设工程专项经费，广西自然科学基金项目（2012GXNSFAA053203），广西科技攻关项目（桂科攻12118023-3），广西理工科学实验中心重点项目（LGZX201102）。

作者简介：陈宗平，博士，教授，博士生导师，Email: zpchen@gxu.edu.cn。

参考文献

［1］GONZALEZ B, MARTINEZ F Shear strength of concrete with recycled aggregates［C］//Proceedings of the Conference on the Use of Recycled Materials in Building and Structures. Barcelona, Spain, 2004: 619-628.

［2］AJDUKIEWICZ A B, KLISZCZEWICZ A T. Comparative tests of beams and columns made of recycled aggregate concrete and natural aggregate concrete［J］. Journal of Advanced Concrete Technology, 2007, 5(2): 259-273.

［3］陈宗平,范杰,叶培欢,等.钢筋再生混凝土梁受力性能试验研究［J］.建筑结构,2013,43(9):9295.

［4］程元虎, 刘超, 李晓文, 等. 再生混凝土梁受弯性能试验研究［J］. 砖瓦, 2010(2): 45-49.

［5］吴瑾, 丁东方, 杨曦. 再生混凝土梁正截面开裂弯矩分析与试验研究［J］. 建筑结构, 2010,40 (2): 112-114.

［6］吴瑾，王东东，吴方华. 腐蚀钢筋再生混凝土板弯曲性能试验研究［J］.建筑结构，2013,43(1):69-72.

［7］白文辉, 王柏生. 钢筋再生粗骨料混凝土简支梁的受弯性能试验研究［J］.工业建筑, 2009, 39(S1): 910-913,934.

［8］李平先. 钢筋再生混凝土简支梁变形性能试验研究［J］. 建筑结构, 2008, 38(10): 96-101.

［9］肖建庄. 再生混凝土［M］. 北京: 中国建筑工业出版社，2008.

［10］周静海, 杨永生, 焦霞. 再生混凝土柱轴心受压承载力研究［J］. 沈阳建筑大学学报:自然科学版,2008,24(4): 572-576.

［11］周静海, 于洪洋, 杨永生.再生混凝土大偏压长柱受力性能试验［J］.沈阳建筑大学学报:自然科学版,2010,26(2): 255-260.

［12］张亚齐.不同配箍率再生混凝土短柱抗震性能试验研究［J］.建筑结构,2011,41(S1):272-276.