再生混凝土动态直接拉伸的试验研究

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摘要利用大直径(75 mm)分离式霍普金森拉杆(SHTB)，对再生粗骨料取代率分别为0%、25%、50%、75%和100%的5组圆柱体再生混凝土试样进行应变率范围为100~102s-1的动态直接拉伸实验，研究再生混凝土的动态直接拉伸力学性能及其破坏形态。试验结果表明，再生混凝土的抗拉强度随平均应变率的增加而增大，而再生混凝土的破坏形态与平均应变率有关，这表明再生混凝土具有明显的率敏感性。在相同水灰比下，再生混凝土准静态拉伸强度比普通混凝土低1.3%~15.9%，动态拉伸强度比普通混凝土低1.7%~29%，此研究为再生混凝土的工程应用提供一定的理论依据。

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关键词 ：再生混凝土, 再生粗骨料, 取代率, 动态直接拉伸, SHTB

Abstract：

To study the direct tensile properties and fracture patterns of recycled aggregate concrete (RAC) with various replacement percentage (i.e. 0%, 25%, 50%, 75% and 100%) of recycled coarse aggregates, the dynamic direct tensile tests of RAC in the strain-rate range of 100-102 s-1 were carried out using large diameter (75 mm) split Hopkinson tensile bar (SHTB). Test results show that the tensile strength of RAC increases with the increase of the average strain-rate, and the average strain-rate affects the damage form of RAC, which indicate that the RAC has obvious rate sensitivity. Under the same water cement ratio, the quasi-static and dynamic tensile strength of RAC is 1.3%~15.9% and 1.7%~29% lower than that of ordinary concrete, respectively. This study offers theoretical basis for the engineering application of RAC.

Key words： recycled aggregate concrete recycled coarse aggregates replacement percentage dynamic derect tensile SHTB

收稿日期: 2015-01-07 出版日期: 2016-04-25

引用本文:

滕骁1，卢玉斌1，陈兴1，于水生2，姜锡权3. 再生混凝土动态直接拉伸的试验研究[J]. 振动与冲击, 2016, 35(9): 43-51.
TENG Xiao1 LU Yu-bin1 CHEN Xing1 YU Shui-sheng2 JIANG Xi-quan3. Experimental study on dynamic direct tensile of recycled aggregate concrete. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(9): 43-51.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2016/V35/I9/43

[1] 肖建庄，李佳彬，兰阳. 再生混凝土技术最新研究进展与评述[J]. 混凝土，2003, 25(10): 17-20.
XIAO Jian-zhuang, LI Jia-bin, LAN Yang. Research on recycled aggregate concrete-a review [J]. Concrete, 2003, 25(10): 17-20.
[2] 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.
XING Zhen-xian, ZHOU Yue-nong. Study on the main performance of regenerated concrete [J]. Journal of North China Institute of Water Conservancy and Hydroelectric Power, 1998, 19(2): 30-32.
[3] Mehta P K. 混凝土的结构性能与材料[M]. 祝永年等译. 上海：同济大学出版社，1991.
Mehta P K. Structure, property and materal in concrete [M]. Translated by ZHU Yong-nian, et al. Shanghai: Tongji University Press, 1991.
[4] Bischoff P H, Perry S H. Compressive behaviour of concrete at high strain rates [J]. Materials and Structures, 1991, 24(144):425-450.
[5] Joseph W, Tedsco C, Allen Ross, Steven T, Kuennen. Experimental and numerical analysis of high strain rate splitting tensile tests [J]. ACI Materials Journal, 1993, 90(2): 162-169.
[6] Klepaczko J R, Brara A. An experimental method for dynamic tensile testing of concrete by spalling [J]. International Journal of Impact Engineering, 2001, 25: 387-409.
[7] Choi S J, Yang K H, Sim J I, et al. Direct tensile strength of lightweight concrete with different specimen depths and aggregate sizes [J]. Construction and Building Materials, 2014, 63: 132-141.
[8] Yan D, Lin G. Dynamic properties of concrete in direct tension [J]. Cement and concrete research, 2006, 36(7): 1371-1378.
[9] 卢玉斌，陈兴，滕骁等. 再生混凝土准静态压缩力学性能试验[J]. 西南科技大学学报，2013, 28(1): 43-48.
LU Yu-bin, CHENG Xing, TENG Xiao. Experimental study on quasi-static compressive mechanical performance of recycling concrete [J]. Journal of Southwest University of Science and Technology, 2013, 28(1): 43-48.
[10] 张凯，陈荣刚，张威等. 混凝土动态直接拉伸实验技术研究[J]. 实验力学，2014, 29(1): 89-96.
ZHANG Kai, CHENG Rong-gang, ZHANG Wei, et al. Study of experimental technique for concrete dynamic direct tension [J]. Journal of Experimental Mechanics, 2014, 29(1): 89-96.
[11] 宋力，胡适胜. SHPB数据处理中的二波法与三波法[J]. 爆炸与冲击，2005, 25(4): 368-373.
SONG Li, HU Shi-sheng, Two-wave and three-wave method in SHPB data processing [J]. Explosin and Shock Waves, 2005, 25(4): 368-373.
[12] 周风华，王礼立，胡时胜. 高聚物SHPB实验中试件早期应力不均匀性的影响 [J]. 实验力学，1992, 7: 23-29.
Zhou Feng-hua, WANG Li-li, HU Shi-sheng. On the effect of stress nonuniformness in polymer specimen of SHPB test [J]. Journal of Experimental Mechanics, 1992, 7: 23-29.
[13] LU Yu-bin, LI Qing-ming. Appraisal of pulse-shaping technique in split Hopkinson pressure bar tests for brittle materials [J]. International Journal of Protective Structures, 2010, 1(3): 363-390.
[14] Jau W C, Fu C W, Yang C T. Study of feasibility and mechanical properties for producing high-flowing concrete with recycled coarse aggregate [C]. International workshop on sustainable development and concrete and concrete technology. Beijing. 2004:89-102.
[15] Kou S C, Poon C S, Chan D, Properties of steam cured recycled aggregate fly ash concrete [C]. International RILEM conference on the use of recycled materials in buildings and structures, Barcelona. 2004:590-599.
[16] 肖建庄，兰阳. 再生混凝土单轴受拉性能试验研究 [J]. 建筑材料学报，2006, 9（2）: 154-158.
XIAO Jian-zhuang1, LAN Yang. Investigation on the tensile behavior of recycled aggregate concrete [J]. Journal of Building Materials, 2006, 9(2): 154-158.
[17] 张波志，王社良等. 再生混凝土基本力学性能试验研究 [J]. 混凝土，2011, 7: 4-6.
ZHANG Zhi-bo, WANG She-liang, et al. Experimental analysis of the basic mechanical properties of recycled concrete [J]. Concrete, 2011, 7: 4-6.
[18] 肖诗云，林皋，王哲等. 应变率对混凝土抗拉特性影响 [J].大连理工大学学报，2001, 41(6): 721-725.
XIAO Shi-yun, LIN Gao, WANG Zhe, et al. Effects of strain rate on dynamic behavior of concrete in tension [J]. Journal of Dalian University of Technology, 2001, 41(6): 721-725.
[19] 卢玉斌，武海军，赵隆茂. 混凝土类材料动态拉伸强度的微观力学模型 [J]. 爆炸与冲击，2013, 33(3): 275-281.
LU Yu-bin, WU Hai-jun, ZHAO Long-mao. A micro- mechanical model for dynamic tensile strength of concrete-like materials [J]. Explosin and Shock Waves, 2013, 33(3): 275-281.