Influencing Factors of Working Performance and Mechanical Properties of Super-high Toughness Concrete(STC)
The effects of silica fume type,silica fume content,steel fiber type and adding method on working performance and mechani-cal properties of Super-high Toughness Concrete(STC)were studied based on laboratory tests.The results show that silica fume has adverse effect on the working performance of STC,but the effect of zirconium silica fume and white silica fume on the working perform-ance of STC is relatively small,and when the content is less than20%,it can improve the mechanical properties of STC.Single steel fi-ber will reduce the working performance of STC,and the influence degree is hooked steel fiber,wave-shaped steel fiber and straight steel fiber.The working performance of STC with long straight steel fiber and short straight steel fiber is better than that with single steel fiber.Considering the working performance and mechanical properties,the best combination is 1.5% long straight steel fiber and 0.5% short straight steel fiber.
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NSTL
万方数据
维普
