干旱区生态环境知识资源中心(Arid): 沙漠地区混凝土强度与抗裂性能规律研究

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	沙漠地区混凝土强度与抗裂性能规律研究
其他题名	Strength and Crack Resistance of Concrete in Desert Area Law Study
	康健 1; 刘建勋 2; 张戎令 3; 赵文斌 1; 赵永鹏 4
来源期刊	硅酸盐通报
ISSN	1001-1625
出版年	2017
卷号	36 期号:7 页码:2178-2185
中文摘要	为研究沙漠地区不同养护方式下混凝土强度发展规律和不同强度等级混凝土抗裂性能,采用C35和C50混凝土在施工现场进行试验研究。通过圆环法试验探究混凝土强度增长与抗裂性能之间的关系,研究结果表明: (1)通过两种强度等级混凝土不同养护方式下强度增长与裂缝观测对比分析,不同养护方式对混凝土早期强度增长影响存在差异,保温保湿养护下混凝土早期强度增长最快。(2)在控制外界影响因素和混凝土外部养护条件的同时,高强度等级混凝土裂缝开裂时间和裂缝宽度均早于或大于低强度等级混凝土,混凝土强度等级越高越容易开裂。合理的养护方式对抑制和延缓混凝土裂缝的开展有重要影响,其中保温保湿养护下混凝土裂缝开裂较晚且发展缓慢。(3)裂缝的发展与混凝土早期强度增长密切相关,通过不同养护方式下混凝土强度增长与裂缝发展曲线分析,抗裂圆环裂缝的产生集中于混凝土强度增长最快的阶段,因此要重视实际工程中混凝土早期强度增长过程中的裂缝防控。
英文摘要	In order to study the development law of concrete strength and crack resistance of concrete of different strength grades under different curing methods in desert area,C35 and C50 concrete were used in the construction site. Through the circle method test to explore the relationship between the concrete strength and crack resistance of the growth,the results show that: (1) Through the analysis of two kinds of strength grade of concrete under different curing method,the strength and crack growth are observed, different curing methods have different effects on the growth of early strength of concrete,the early strength of concrete under heat and wet curing has the fastest growth. (2) In control and external factors and concrete curing conditions of the external influence,concrete cracking time and crack width of high strength are earlier than or greater than the low strength concrete,concrete strength is more prone to cracking. The reasonable curing method has an important influence on restraining and delaying the development of concrete cracks. The cracks of concrete under heat preservation and moisture conservation are late and develop slowly. (3) The development of the cracks and concrete early strength growth are closely related,through the concrete strength and crack growth curve under different curing method analysis,crack ring cracks on concrete strength is the fastest growing stage,so attention should be paid to the prevention and control of cracks in actual engineering concrete early strength growth process.
中文关键词	沙漠地区 ; 强度 ; 抗裂性能 ; 圆环法
英文关键词	desert area strength crack resistance circle method
语种	中文
国家	中国
收录类别	CSCD
WOS类目	CONSTRUCTION BUILDING TECHNOLOGY
WOS研究方向	Construction & Building Technology
CSCD记录号	CSCD:6047214
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236137
作者单位	1.兰州交通大学, 甘肃省道路桥梁与地下工程重点实验室, 兰州, 甘肃 730070, 中国; 2.道桥工程灾害防治技术国家地方联合工程实验室, 道桥工程灾害防治技术国家地方联合工程实验室, 兰州, 甘肃 730070, 中国; 3.兰州交通大学, 甘肃省道路桥梁与地下工程重点实验室;;道桥工程灾害防治技术国家地方联合工程实验室, 兰州, 甘肃 730070, 中国; 4.甘肃路桥建设集团有限公司, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	康健,刘建勋,张戎令,等. 沙漠地区混凝土强度与抗裂性能规律研究[J],2017,36(7):2178-2185.
APA	康健,刘建勋,张戎令,赵文斌,&赵永鹏.(2017).沙漠地区混凝土强度与抗裂性能规律研究.硅酸盐通报,36(7),2178-2185.
MLA	康健,et al."沙漠地区混凝土强度与抗裂性能规律研究".硅酸盐通报 36.7(2017):2178-2185.