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Uniaxial Compressive Test of Steel Fiber And Nano-silica Modified Crumb Rubber Concrete And Damage Constitutive Model
ZHANG Tao,WANG Yihong *,GAO Danying
School of Civil Engineering, Zhengzhou University, No. 100, Science Road, Zhengzhou, Henan 450001.
*Correspondence author
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Funding: The Key Scientific Research Projects of Henan Province (No.18A560022), National Natural Science Foundation of China(No.U1704254, 51808508)
Opened online: 8 October 2019
Accepted by: none
Citation: ZHANG Tao,WANG Yihong,GAO Danying.Uniaxial Compressive Test of Steel Fiber And Nano-silica Modified Crumb Rubber Concrete And Damage Constitutive Model[OL]. [ 8 October 2019] http://en.paper.edu.cn/en_releasepaper/content/4749693
 
 
According to six groups of crumb rubbers concrete (CRC) with different steel fibers volume ratios and nano-silica contents (SFNS-CRC) under uniaxial test, discussing the effect of steel fiber and nano-silica content. Through data collection and analysis, a computational model for the Compressive strength and Modulus of elasticity on SFNS-CRC is proposed. Based on Weibull distribution and the hehypothesis of strain equivalence, one damage constitutive model was proposed by introducing one damage threshold parameters. Test results indicate that Relationship between compressive strength and Modulus of elasticity is different from natural concrete, but is similar to CRC. Regression formula of compressive strength, Modulus of elasticity, and the damage model curves are suggested.
Keywords:crumb rubber concrete; steel fibers; nano-silica; damage threshold;damage variable; constitutive model
 
 
 

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