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研究了不同掺量、高低温稻壳灰等量替代硅灰后对RPC试件的抗压强度、抗折强度及折压比的影响,并通过不同的养护制度(即热水养护及蒸汽养护)测试绿色环保型RPC力学性能的发展规律.研究结果表明:低温稻壳灰与硅灰在复掺作用下比单掺硅灰更有利于RPC强度的增长,且能更好地改善RPC的脆性;采用100℃热水养护比蒸汽养护对RPC抗压强度更有利,然而养护制度对其抗折强度的影响并不明显.因此将稻壳灰作为绿色资源应用于RPC中,在获得超高性能的同时对降低成本与实现资源化再生利用均有指导性意义.
The effects of different dosage, high and low temperature of rice husk ash instead of silica fume on compressive strength, flexural strength and folding ratio of RPC specimens were studied. Through different curing systems (ie hot water and steam curing ) Was used to test the development law of green environmental-friendly RPC mechanical properties.The results show that low-temperature rice husk ash and silica fume are more favorable to the increase of RPC strength than single-doped silica fume, and can better improve the brittleness of RPC ; The use of 100 ℃ hot water curing is more favorable than the steam curing RPC compressive strength, but the curing system has little effect on the flexural strength, so rice husk ash is used as green resource in RPC, At the same time to reduce costs and realize the recycling of resources have guiding significance.