温度-复合盐耦合条件下纤维混凝土井壁冲击倾向性试验研究
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摘要
本工作从混凝土的冲击倾向性出发,通过试验比较不同等级和种类纤维混凝土的脆性系数、冲击能量指数及动态破坏时间等相关冲击倾向性指标,并提出混凝土的冲击倾向性评价标准。根据滨海金属矿地下水主要离子浓度及井下温度的现实情况,设计混凝土服役环境。结果表明:纤维能够阻滞裂纹的发展,改善混凝土的冲击倾向性;在复合盐溶液中,混凝土抗压强度不断增加,各种混凝土均朝着强冲击倾向性方向发展,且高温可以加快腐蚀速率。非蒸养型超高性能混凝土(NSC-UHPC)各方面性能皆较优异,复合盐溶液对其影响很小,腐蚀前后皆无冲击倾向性,是一种能应用于深地井壁及应力集中部位的混凝土材料。
This study focus on the bursting liability of concrete. The brittleness coefficient, impact energy index and dynamic failure time of various types and grades of fiber concrete were compared in this paper. Meanwhile, the evaluation criteria on bursting liability of concrete was put forward. According to the actual situation about ion concentration and temperature in the coastal metal mine, four types of environments were designed. The results show that fibers can arrest the growth of cracks, and improve the bursting liability of concrete. In the environment of composite salt corrosion, the compressive strength of concrete increase, all kinds of concrete develop towards strong bursting liability, and high temperature can shorten the process of corrosion. Non-stream cured ultra-high performance concrete(NSC-UHPC) is a kind of ductile concrete with excellent performance in all aspects. NSC-UHPC also has no bursting liability after corrosion, since the composite salt solution has little influence on it. NSC-UHPC is a kind of concrete material which can be applied to deep shaft lining.
This study focus on the bursting liability of concrete. The brittleness coefficient, impact energy index and dynamic failure time of various types and grades of fiber concrete were compared in this paper. Meanwhile, the evaluation criteria on bursting liability of concrete was put forward. According to the actual situation about ion concentration and temperature in the coastal metal mine, four types of environments were designed. The results show that fibers can arrest the growth of cracks, and improve the bursting liability of concrete. In the environment of composite salt corrosion, the compressive strength of concrete increase, all kinds of concrete develop towards strong bursting liability, and high temperature can shorten the process of corrosion. Non-stream cured ultra-high performance concrete(NSC-UHPC) is a kind of ductile concrete with excellent performance in all aspects. NSC-UHPC also has no bursting liability after corrosion, since the composite salt solution has little influence on it. NSC-UHPC is a kind of concrete material which can be applied to deep shaft lining.
引文
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28 Zhao Z H,Xie H P.Advanced Engineering Sciences,2008(2),26(in Chinese).赵忠虎,谢和平.四川大学学报(工程科学版),2008(2),26.
2 He M C.Journal of China Coal Society,2014,39 (8),1409(in Chinese).何满潮.煤炭学报,2014,39 (8),1409.
3 Dennis J B.International Journal of Mining Science and Technology,2017,27,749.
4 Qi Q X,Peng Y W,Li H Y,et al.Chinese Journal of Rock Mechanics and Engineering,2011,30 (S1),2736(in Chinese).齐庆新,彭永伟,李宏艳,等.岩石力学与工程学报,2011,30 (S1),2736.
5 Yao J M,Yan Y Y,Li S Z,et al.Journal of China Coal Society,2011,36(S2),353(in Chinese).姚精明,闫永业,李生舟,等.煤炭学报,2011,36(S2),353.
6 Su C D,Gao B B,Yuan R F,et al.Journal of China Coal Society,2014,39(S1),8(in Chinese).苏承东,高保彬,袁瑞甫,等.煤炭学报,2014,39(S1),8.
7 Li H Y,Kang L J,Xu Z J,et al.Journal of China Coal Society,2014,39(2),384(in Chinese).李宏艳,康立军,徐子杰,等.煤炭学报,2014,39(2),384.
8 Song C Y,Ji H G,Sun L H.Chinese Journal of Underground Space and Engineering,2015,11 (S2),401(in Chinese).宋朝阳,纪洪广,孙利辉.地下空间与工程学报,2015,11(S2),401.
9 Han R,Zhao S B,Qu F L.China Civil Engineering Journal,2006,39(11),63(in Chinese).韩嵘,赵顺波,曲福来.土木工程学报,2006,39 (11),63.
10 Yang Y,Ren Q W.Journal of Hehai University (Natural Sciences),2006,34(1),92(in Chinese).杨勇,任青文.河海大学学报(自然科学版),2006,34(1),92.
11 Gao D Y,Zhao L P,Feng F.Journal of Building Materials,2014,17(5),783(in Chinese).高丹盈,赵亮平,冯虎.建筑材料学报,2014,17(5),783.
12 Jia J Q,Meng G,Zhu W Q.Journal of Building Structures,2014,35(9),1(in Chinese).贾金青,孟刚,朱伟庆.建筑结构学报,2014,35(9),1.
13 Jia J Q,Yao D L,Yu F.Journal of Building Structures,2013,341(2),112(in Chinese).贾金青,姚大立,余芳.建筑结构学报,2013,341(2),112.
14 Xu H B,Deng Z C,Chen C S,et al.China Civil Engineering Journal,2014,47(12),91(in Chinese).徐海宾,邓宗才,陈春生,等.土木工程学报,2014,47(12),91.
15 Hu C H,Gao Y E,Ding W C.Journal of Building Structures,2013,34(12),128(in Chinese).胡春红,高艳娥,丁万聪.建筑结构学报,2013,34(12),128.
16 Yao D L,Jia J Q,Wu F,et al.Construction and Building Materials,2014,52,194.
17 Rong Z D,Sun W,Zhang Y S.International Journal of Impact Enginee-ring,2010,37,515.
18 Qiao Y F,Sun W,Jiang J Y.Construction and Building Materials,2015,93,806.
19 Chen F,Gao J M,Qi B,et al.Construction and Building Materials,2017,151,164.
20 Gao J M,Yu Z X,Song L G,et al.Construction and Building Materials,2013,39,33.
21 Liu J H,Wu R D,Zhou Y C.Journal of China Coal Society,2018,43(1),79(in Chinese).刘娟红,吴瑞东,周昱程.煤炭学报,2018,43 (1),79.
22 Zhang X Y,Feng G R,Kang L X.Journal of China Coal Society,2009,34(9),1165(in Chinese).张绪言,冯国瑞,康力勋.煤炭学报,2009,34(9),1165.
23 Wang C.Coal Mining Technology,2017,22(5),9(in Chinese).王超.煤矿开采,2017,22(5),9.
24 Liu J H,Song S M,Mei S G.Journal of Wuhan University of Technology,2001,23(11),14(in Chinese).刘娟红,宋少明,梅世刚.武汉理工大学学报,2001,23(11),14.
25 Li K,Liu J H,Bian L B.Journal of China Coal Society,2015,40 (S2),353(in Chinese).李康,刘娟红,卞立波.煤炭学报,2015,40(S2),353.
26 Jin Z Q,Sun W,Zhang Y S,et al.Journal of the Chinese Ceramic Society,2006(5),630(in Chinese).金祖权,孙伟,张云升,等.硅酸盐学报,2006(5),630.
27 Gao M,Liu J H,Wu A X,et al.Journal of Central South University (Natural Sciences),2016,47 (8),2776(in Chinese).高萌,刘娟红,吴爱祥,等.中南大学学报(自然科学版),2016,47(8),2776.
28 Zhao Z H,Xie H P.Advanced Engineering Sciences,2008(2),26(in Chinese).赵忠虎,谢和平.四川大学学报(工程科学版),2008(2),26.