PDF(891 KB)
Effect of Straw Fiber on Frost Resistance of Concrete Composites
YANG Yang, CUI Yan
PDF(891 KB)
PDF(891 KB)
Effect of Straw Fiber on Frost Resistance of Concrete Composites
This paper explores the frost resistance of straw fiber reinforced concrete under freeze-thaw cycle damage, and selects composite Portland cement, silica fume, water reducer, rape straw and other raw materials to prepare straw fiber, and the straw fiber content is 2.5%, 5.0% and 7.5%, respectively, to prepare straw fiber reinforced concrete specimens, and the compressive strength, mass loss rate and dynamic elastic modulus of the specimens are tested under different freeze-thaw cycles. The results show that the number of freeze-thaw cycles affects the compressive strength, mass loss rate and dynamic elastic modulus of the specimen. With the increase of freeze-thaw cycles, the compressive strength and dynamic elastic modulus of straw fiber reinforced concrete decrease significantly with the increase of the number of freeze-thaw cycles, and the smaller the straw fiber content, the higher the mass loss rate of the specimen.
Straw fiber / Concrete / Freeze-thaw cycle damage / Compressive strength / Quality loss rate
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