EXPERIMENTAL STUDY ON MIX DESIGN AND EARLY STRENGTH OF RECYCLED AGGREGATE CONCRETE
-
摘要: 对四川地区再生骨料的基本性质进行检测,采用自由水灰比方法进行再生混凝土配合比设计,讨论不同水灰比对抗压强度的影响,建议净水灰比取0.4。通过对90组再生混凝土不同龄期的抗压强度分析,回归不同取代率再生混凝土的强度换算公式,公式计算结果与试验结果符合良好,为该地区再生混凝土工程应用和结构早龄期强度推算提供强度指标。Abstract: Based on the test results of the basic performance of the recycled aggregate in Sichuan Province,the free water cement ratio method for mix design was adopted,and the value of W /C was suggested to be 0. 4. The experimental formula of conversion strength for different recycled aggregate replacement ratio was proved according to 90 sets of experimental data. The results by formula agreed well with those of the tests,which provided strength index for the use of recycled aggregate concrete and estimate of early strength of structure in this region.
-
Sagoe-Crentsil K K,Brown T,Taylor A H. Performance of Concrete Made with Commercially Produced Coarse RecycledConcrete Aggregate [J]. Cement and Concrete Research,2001,31(5): 707-712. [2] Lin Yonghuang,Tyan Yawyauan,Chang Tapeng,et al. An Assessment of Optimal Mixture for Concrete Made with Recycled Concrete Aggregates[J]. Cement and Concrete Research,2004,34(8):1373-1380. [3] 张亚梅,秦鸿根,孙伟,等. 再生混凝土配合比设计初探索[J].混凝土与水泥制品,2002,123(1): 7-9. [4] 史巍,侯景鹏. 再生混凝土技术及其配合比设计方法[J]. 建筑技术开发,2001(8):18-20. [5] 白文辉,张金龙. 基于自由水灰比的再生混凝土配合比设计研究[J]. 绍兴文理学院学报,2007(3):52-55. [6] 何世钦,王海超. 高性能混凝土配合比设计的正交试验研究[J]. 工业建筑,2003,33(8):8-10. [7] 李俊,尹健,周士琼,等. 基于正交试验的再生骨料混凝土强度研究[J]. 土木工程学报,2006,39(9):43-46. [8] 邢振贤,周曰农. 再生混凝土的基本性能研究[J]. 华北水利水电学院学报,1998,19(2):30-32. [9] 陈萌,刘立新,彭少民. 预拌混凝土各龄期抗拉和抗压强度换算关系试验研究[J]. 建筑结构,2010,40(2):109-111.
点击查看大图
计量
- 文章访问数: 150
- HTML全文浏览量: 13
- PDF下载量: 138
- 被引次数: 0