[1]邱继生,潘 杜,关 虓,等.冻融环境下煤矸石混凝土损伤演化规律研究[J].西安建筑科技大学学报(自然科学版),2017,49(05):654-0658.[doi:10.15986/j.1006-7930.2017.05.006]
　QIU Jisheng,PAN Du,GUAN Xia o,et al.Study on damage evolution law of coal gangue concrete under freezing-thawing environment[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2017,49(05):654-0658.[doi:10.15986/j.1006-7930.2017.05.006]
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冻融环境下煤矸石混凝土损伤演化规律研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
49
期数:
2017年05期
页码:
654-0658
栏目:
出版日期:
2017-10-28

文章信息/Info

Title:
Study on damage evolution law of coal gangue concrete under freezing-thawing environment
文章编号:
1006-7930(2017)05-0654-06
作者:
邱继生;  潘 杜 ;  关 虓 ;  谷拴成 ;  郑娟娟 ;  张程华
(西安科技大学 建筑与土木工程学院,陕西 西安,710054)
Author(s):
QIU Jisheng;  PAN Du;  GUAN Xia o;  GU Shuancheng;  ZHENG Juanjuan;  ZHANG Chenghua
(School of Architecture and Civil Engineering, Xian University of Science and Technology,Xian 710054, China)
关键词:
煤矸石混凝土; 抗冻性能; 相对动弹性模量; 损伤演化方程
Keywords:
coal gangue concrete;  frost resistance;  relative dynamic elastic modulus;  d amage evolution equation
分类号:
TU444
DOI:
10.15986/j.1006-7930.2017.05.006
文献标志码:
A
摘要:
为研究煤矸石混凝土的抗冻性能，试验按照0%、20%、40%、60%的煤矸石取代率制备混凝土，探索研究不同取代率的煤矸石混凝土在冻融环境下的表观形貌、质量、相对动弹性模量和抗压强度的变化规律；并根据煤矸石混凝土在不同冻融循环作用下的动弹性模量的变化，建立煤矸石混凝土的损伤演化方程。研究结果表明：煤矸石取代率为0%、20%、40%和60%的混凝土，分别在冻融循环300次、65次、55次和25次破坏。随着煤矸石取代率的增加，混凝土的抗冻性能明显降低；煤矸石混凝土的损伤演化方程与试验数据符合较好，可以为冻融环境下煤矸石混凝土的耐久性设计提供理论依据。
Abstract:
To study the frost resistance of coal gangue concrete, the concrete was prepared according to 0%, 20%, 40% and 60% substitution rate of coal gangue. The rule of different coal gangue substitution rate on the surface appearance, the mass , the dynamic elastic modulus and compressive strength by the action of freeze-thaw cycles was researched. And a ccording to the change of the dynamic elastic modulus of coal gangue concrete under different freeze-thaw cycles, the damage evolution equation of coal gangue concrete was established. The results show that the coal gangue substitution rate of 0%, 20%, 40% and 60% of the concrete, freeze-thaw damage at 300 times, 65 times, 55 times and 25 times respectively. With the increase of the replacement rate of coal gangue, the frost resistance of concrete obviously decreased. It is also shown that the damage evolution equation of coal gangue concrete coincide well with the test data, which can provide theoretical basis for the durability design of coal gangue concrete in freeze-thaw environment.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-11-07
修改稿日期:2017-08-21
基金项目:陕西省教育厅自然科学基金专项（2013JK0969）
第一作者:邱继生（1977-），男，博士，副教授，主要从事绿色生态建筑材料力学性能及耐久性研究.E-mail: 358896111@qq.com
更新日期/Last Update: 2017-11-09