Standard test method for flexural modulus of elasticity of dimension stone 方石彎曲彈性模量的標準試驗方法
Test results show that the steel fiber in concrete have more effectiveness on improving the splitting tensile strength and the flexural strength in the early age than after its hardening ; the flexural modulus of elasticity of sfrc are higher than the plain concrete at different ages while their compressive modulus of elasticity are almost the same . it ' s also shown that , similar to the plain concrete , the early - age loading decreases the strengths of sfrc , but , with the increase of the contents of the steel fiber things are getting better , especially for the splitting tensile strength and the flexural strength 試驗結(jié)果表明:與性能穩(wěn)定之后相比,在混凝土中摻入鋼纖維對它的早期劈裂抗拉強度和抗折強度有尤為顯著的提高作用;對各齡期的受壓彈性模量影響不大,而對提高抗折彈性模量有一定的效果;與素混凝土試件相同,在早期(強度達到28天強度的85前)對鋼纖維混凝土試件施加荷載會對它的各種強度產(chǎn)生一定的不利影響,但是摻入鋼纖維可以減輕這種不利影響,尤其對劈裂抗拉強度和抗折強度作用突出,并且含纖率越高,效果越明顯。