登录
注册
E-alert
登录
注册
E-alert
STRENGTH AND FAILURE MECHANISM ANALYSIS OF RECYCLED AGGREGATE CONCRETE IMPROVED BY DSP GROUT
-
摘要: 研究DSP浆液预处理再生骨料混凝土的强度和直接在组分中加入DSP浆液强化再生混凝土的强度,并与基准再生混凝土进行对比。试验结果表明,无论是立方体抗压强度,还是棱柱体抗压强度,DSP浆液强化再生混凝土的强度均为最高,比基准再生混凝土棱柱体强度提高25.6%(或26.7%);而对于DSP浆液预处理再生骨料混凝土,7 d立方体抗压强度高于基准再生混凝土,28 d立方体抗压强度则低于基准再生混凝土,28 d棱柱体抗压强度则各有高低。并对再生混凝土的破坏机理进行了分析。Abstract: The strength of recycled concrete was studied whose recycled coarse aggregate was preprocessed by DSP grout. At the same time,the strength of recycled concrete added DSP grout as part of the concrete directly in the mixing process was also studied,but also with a comparison of the basic recycled concrete. The results show that for the cube compressive strength and prism compressive strength,the strength of recycled concrete improved by DSP grout is the highest,respectively,increased by 25. 6% (or 26. 7% ) as compared to the prism compressive strength of the basic recycled concrete. And for DSP grout pretreatment recycled aggregate concrete,7 d cube compressive strength is higher than the basic recycled concrete,28 d cube compressive strength is lower than the basic recycled concrete, 28d prism compressive strength is high and low. In addition,the failure mechanism of the recycled concrete is analyzed.
-
Key words:
- DSP grout /
- process /
- compressive strength /
- failure surface /
- interface /
- failure mechanism
-
林皋，李建波，赵娟，等. 单轴拉压状态下混凝土破坏的细观数值演化分析[J]. 建筑科学与工程学报，2007，24(1): 1-6. [2] 肖建庄. 再生混凝土 [M]. 北京: 中国 建筑 工 业出版社，2008. [3] Xu G，Beaudoin J J. The Effect of Polyna phthalene Sulfonate Superplasticizer on the Contribution of the Interracial Transition Zone to the Electrical Resistivity of Mortars Containing Silica and Limestone Fine Aggregate[J]. Cement and Concrete Research，2000(30):683. [4] 陈云钢，孙振平，肖建庄. 再生混凝土界面结构特点及其改善措施[J]. 混凝土，2004(2):10-13. [5] 陈云钢. 界面改性剂对再生混凝土性能改善效果的初步研究[D]. 上海: 同济大学，2006. [6] 陈云钢. 再生混凝土界面强化试验的微观机理研究[J]. 混凝土，2007(11):53-57. [7] 张学兵，方志，邓寿昌，等. 制备工艺对再生骨料混凝土性能的影响[J]. 工业建筑，2012，42(2):109-114. [8] Zhang Xuebing，Kuang Chenggang，Fang Zhi，et al. ThePerformance of Concrete Made from Recycled Aggregate Soaked inCement Paste [C] ∥ Proceedings of the 2nd InternationalConference on Waste Engineering and Management，RILEMProceedings PRO73. Shanghai: 2010: 443-454. [9] 杜婷，李惠强，吴贤国. 混凝土再生骨料强化试验研究[J].建筑石膏与胶凝材料，2002(3): 6-8. [10] 王志元. 用聚合物乳液改善废弃混凝土作集料的砂浆强度[J]. 混凝土，1999(2): 44-47. [11] 杜婷，李惠强. 强化再生骨料混凝土的力学性能研究[J]. 混凝土与水泥制品，2003(2): 19-20. [12] 程海丽，王彩彦. 水玻璃对混凝土再生集料的强化试验研究[J]. 建筑石膏与胶凝材料，2004(12): 12-14. [ 13] 范小平，徐银芳. 再生骨料的强化试验[J]. 上海建材，2005(4): 22-23. [14] 杨宁，王崇革，赵美霞. 再生骨料强化技术研究[J]. 新型建筑材料，2011(3): 45-47. [15] 黄政宇，钱峰. DSP 早强高强灌浆料综合性能研究[J]. 湖南大学学报:自然科学版，2009(8): 18-22. [16] 肖建庄，刘琼，李文贵，等. 再生混凝土细微观结构和破坏机理研究[J]. 青岛理工大学学报，2009，30(4): 24-30. [17] 方志，杨钻，苏捷. 均质混凝土受压性能的细观数值模拟[J]. 水利学报，2011，42(9): 1102-1109. -
点击查看大图
计量
- 文章访问数: 112
- HTML全文浏览量: 15
- PDF下载量: 126
- 被引次数: 0
下载:
