Stress-Strain Characteristics of Foamed Concrete Subjected to Large Deformation under Uniaxial and Triaxial Compressive Loading

doi:10.1061/(ASCE)MT.1943-5533.0002311

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	Stress-Strain Characteristics of Foamed Concrete Subjected to Large Deformation under Uniaxial and Triaxial Compressive Loading
	Tan, Xianjun 1; Chen, Weizhong 1; Liu, Hongyuan 2; Chan, Andrew Hin Cheong 2
刊名	JOURNAL OF MATERIALS IN CIVIL ENGINEERING
	2018
卷号	30 期号:6 页码:-
关键词	Foamed concrete Stress-strain characteristics Large deformation Triaxial compressive loading
ISSN号	0899-1561
DOI	10.1061/(ASCE)MT.1943-5533.0002311
英文摘要	Large compressive deformation associated with ideal plasticity-like stress plateaus is an extremely important performance characteristic of foamed concrete. However, there have been few investigations concerning the stress-strain characteristics of foamed concrete subjected to axial strain larger than 10% under uniaxial and triaxial compressive loading. In the current study, foamed concrete samples at three densities (250, 450, and 650kg/m3) were prepared and a series of tests were carried out. Axial stress-strain (sigma 1-E) curves were obtained, and peak stress (compressive strength), elastic modulus, peak strain, and the postpeak stress-strain relationship were analyzed. The experimental results showed that the stress-strain characteristics for foamed concrete at all three densities are similar and each can be ideally simplified into four stages. The compressive strength of foamed concrete increases with density and confining pressure, whereas elastic modulus has a positive correlation only with densities regardless of confining pressure. Additionally, no significant correlation was detected between peak strain and density, but peak strain increases with confining pressure. A linear relationship between residual compressive strength and strain was found for almost all test cases. Based on the experimental results, theoretical models for the prediction of peak stress, elastic modulus, and the postpeak stress-strain relationship were derived incorporating the effects of density and confining pressure.
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000431119300043
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4273]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Univ Tasmania, Sch Engn & ICT
推荐引用方式 GB/T 7714	Tan, Xianjun,Chen, Weizhong,Liu, Hongyuan,et al. Stress-Strain Characteristics of Foamed Concrete Subjected to Large Deformation under Uniaxial and Triaxial Compressive Loading[J]. JOURNAL OF MATERIALS IN CIVIL ENGINEERING,2018,30(6):-.
APA	Tan, Xianjun,Chen, Weizhong,Liu, Hongyuan,&Chan, Andrew Hin Cheong.(2018).Stress-Strain Characteristics of Foamed Concrete Subjected to Large Deformation under Uniaxial and Triaxial Compressive Loading.JOURNAL OF MATERIALS IN CIVIL ENGINEERING,30(6),-.
MLA	Tan, Xianjun,et al."Stress-Strain Characteristics of Foamed Concrete Subjected to Large Deformation under Uniaxial and Triaxial Compressive Loading".JOURNAL OF MATERIALS IN CIVIL ENGINEERING 30.6(2018):-.