Study on axial compressive behavior and damage constitutive model of manufactured sand concrete based on fluidity optimization

doi:10.1016/j.conbuildmat.2022.128176

IR > 土木工程学院

	Study on axial compressive behavior and damage constitutive model of manufactured sand concrete based on fluidity optimization
	Han, Zhao 1; Zhang, Yunsheng 1,2; Qiao, Hongxia1,2 ; Feng, Qiong1,2 ; Xue, Cuizhen 1,2; Shang, Minggang 1
	2022-08-22
发表期刊	Construction and Building Materials
ISSN	0950-0618
卷号	345
摘要	Due to the adsorption effect of manufactured sand on water reducer, the method of adding water reducer is often used to improve the fluidity of concrete mixture, which may change the strength of manufactured sand concrete. This paper systematically studies the manufactured sand concrete with different strength grades of C30, C40, C50, C60, C70, C80 prepared with basic water reducer dosage (1 time) and optimized water reducer dosage (1.65 times), and designs slump, slump loss, uniaxial compression and pore content tests for manufactured sand concretes with the same strength grade. The results show that optimized dosage of water reducer can significantly increase the fluidity, peak stress and elastic modulus of manufactured sand concretes with the same strength grade and reduce their slump loss, peak strain and pore content. Combined with Lemaitre damage mechanism, the total damage of manufactured sand concrete is divided into initial damage and load damage. The initial damage is caused by different fluidity of manufactured sand concrete. The greater the fluidity, the less initial damage will be. The influence of initial damage on the concrete stress-strain relationship is analyzed. As the initial damage increases, the total damage will increase, the strength and elastic modulus of the concrete will decrease. This is due to the fluidity changes the pore structure inside the concrete. © 2022 Elsevier Ltd
关键词	Concrete mixtures Elastic moduli Fluidity Sand Stress-strain curves Constitutive relations Damage Fluidity optimization Initial damage Manufactured sand concretes Optimisations Pore content Pores structure Slump loss Water reducers
DOI	10.1016/j.conbuildmat.2022.128176
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS记录号	WOS:000842933600003
出版者	Elsevier Ltd
EI入藏号	20222712317229
EI主题词	Pore structure
EI分类号	412 Concrete ; 483.1 Soils and Soil Mechanics ; 931.2 Physical Properties of Gases, Liquids and Solids ; 951 Materials Science
来源库	WOS
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/159073
专题	土木工程学院
通讯作者	Zhang, Yunsheng
作者单位	1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China; 2.State Key Lab High Performance Civil Engn Mat, Lanzhou 730050, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Han, Zhao,Zhang, Yunsheng,Qiao, Hongxia,et al. Study on axial compressive behavior and damage constitutive model of manufactured sand concrete based on fluidity optimization[J]. Construction and Building Materials,2022,345.
APA	Han, Zhao,Zhang, Yunsheng,Qiao, Hongxia,Feng, Qiong,Xue, Cuizhen,&Shang, Minggang.(2022).Study on axial compressive behavior and damage constitutive model of manufactured sand concrete based on fluidity optimization.Construction and Building Materials,345.
MLA	Han, Zhao,et al."Study on axial compressive behavior and damage constitutive model of manufactured sand concrete based on fluidity optimization".Construction and Building Materials 345(2022).