首页|Uniaxial compressive behaviour of a FRP standing support made of mine wastes
Uniaxial compressive behaviour of a FRP standing support made of mine wastes
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
万方数据
维普
Twenty-seven specimens were tested to investigate the uniaxial compression behaviour of an innovative standing support for underground space applications.The innovative standing support consisted of an external fibre reinforced polymer(FRP)jacket and the infill column made of cementitious grout,tailings and coal wash rejects.Effects of the FRP layers number and water to the cementitious grout(w/g)ratio were evaluated.Test results indicated that lower w/g ratios produced stronger infill columns.With FRP confinement,the standing support demonstrated strain-hardening loading characteristics with a signif-icant improvement in both strength and ductility.The highest strength and strain of the specimens achieved was 58.4 MPa and 11.8％respectively.Compared with the unconfined specimens,the confine-ment with four FRP layers increased the specimen strength and associated strain up to 3.6 and 27.0 times respectively.A correlation between the compressive strength of the infill material and the ultrasonic pulse velocity was also investigated.Furthermore,a simple design-oriented model was proposed to pre-dict the peak strength and the corresponding strain of the innovative standing support.
Standing supportUnderground spacesFRPTailings and coal wash rejectsDesign-oriented model
万方数据
维普
