EFFECTS OF ELEVATED TEMPERATURES ON THE MECHANICAL PROPERTIES OF BASALT FIBERS AND BFRP PLATES
In the present study,the mechanical properties of basalt fiber roving and pultruded basalt fiber reinforced polymer(BFRP)plates were investigated at elevated temperatures.As the temperatures increasing from room temperature to 200 ℃,the tensile strength and modulus of the fiber roving are reduced by 8.3%and 9.7%,respectively.Meanwhile,Weibull shape parameter(m)of the fiber roving decreased by 20.5%.There is a significant decline as regarding to the BFRP plates.The tensile strength and modulus of the BFRP plates are reduced by 37.5%and 31%as temperature rising to 200 ℃.Compared to the tensile properties,the short beam shear strength(SBS)is reduced by around 90%,more susceptible to the elevated temperatures.The glass transition temperature(~93 ℃)plays a key role on the inflexion of the variation of the mechanical properties,especially the tensile strength.In a wide temperature range,the relationship between the tensile strength and the SBS shows a good linearity,indicating the reduction of the tensile strength of the plate comes from the deterioration of the interlaminar shear strength at elevated temperatures.
BFRP Elevated temperature properties
Wenxian Feng Zhongyu Lu
School of Civil and Transportation Engineering,Guangdong University of Technology,No.100 Waihuan Xi Road,Guangzhou Higher Education Mega Center,Panyu District,Guangzhou 510006,China
国际会议
新加坡
英文
1-4
2017-07-19（万方平台首次上网日期，不代表论文的发表时间）