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	受冻融环境混凝土的应力-应变全曲线试验研究
	段安 ; 钱稼茹 ; DUAN An ; QIAN Jia-ru
	2010-05-13 ; 2010-05-13
关键词	混凝土 冻融循环 受压应力-应变全曲线 concrete freeze-thaw cycle complete compressive stress-stain relationship curve TU528.01
其他题名	Experimental study on complete compressive stress-strain curve of concrete subjected to freeze-thaw cycles
中文摘要	为研究受冻融循环作用的混凝土受压应力-应变关系,按照GBJ 82—85规定的快速冻融试验方法,对3批共85个尺寸为100 mm×100 mm×300 mm的混凝土棱柱体试件进行了冻融循环,试件的变化参数为混凝土立方体抗压强度和冻融循环次数;然后对试件进行了单轴抗压破坏试验。结果表明:随着冻融循环次数增加,混凝土的受压应力-应变曲线渐趋扁平,峰值应力降低,峰值应变增大;冻融循环次数相同时,混凝土立方体抗压强度高的试件,其峰值应力降低程度和峰值应变增大程度小于混凝土强度低的试件。回归试验结果,提出了适用于立方体抗压强度为30～50 MPa的受冻融循环作用混凝土的应力-应变全曲线方程及确定其参数的公式。; To study complete compressive stress-strain curve of concrete subjected to freeze-thaw cycles,three groups of 85 concrete prisms specimens with dimensions of 100 mm×100 mm×300 mm were exposed to rapid freeze-thaw in water according to Chinese standard GBJ 82—85.The parameters of the specimens are cubic strength and freeze-thaw cycle numbers.All specimens were tested under uni-axial compressive loading.The test results show:with the increase of freeze-thaw cycle number,the concrete stress-strain curve becomes more flat,the peak stress decreases and the peak strain increases;with the same number of freeze-thaw,the reduction of the peak stress and the increase of the peak strain are more serious for lower strength concrete.Based on the test results,the complete compressive stress-strain curve equations for frozen-thawed concrete with necessary parameters are suggested.The equations are suitable for concrete with cubic strength of 30~50 MPa.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/32494]
专题	清华大学
推荐引用方式 GB/T 7714	段安,钱稼茹,DUAN An,等. 受冻融环境混凝土的应力-应变全曲线试验研究[J],2010, 2010.
APA	段安,钱稼茹,DUAN An,&QIAN Jia-ru.(2010).受冻融环境混凝土的应力-应变全曲线试验研究..
MLA	段安,et al."受冻融环境混凝土的应力-应变全曲线试验研究".(2010).

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