路面水泥混凝土抗盐冻性能研究

doi:10.3969/j.issn.1002-0268.2013.10.001

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摘要 The single-side salt-freeze test was used to optimize the concrete mix design for improving the resistance of concrete to salt scaling. The results show that the resistance of concrete to salt scaling improves with decreasing water-cement ratio and increasing air content. Addition of silica fume also improves the resistance of concrete to salt scaling relative to fly ash, ground granulated blast-furnace slag, and other silica fume. To enhance the resistance to salt scaling of concrete pavements, the water-cement ratio should be less than 0.4, the air content higher than 3.8%, and the cementitious materials-aggregate ratio is 265:745 to 280:720. If fly ash and ground-granulated blast-furnace slag are used then extended curing is required to prevent salt scaling in early-age concrete. Finally, organic instead of inorganic snow-melting agents should be preferred.

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	王稷良
	申力涛
	牛开民

关键词 ： road engineering, concrete pavement, salt scaling, air content, mineral admixtures

Abstract：The single-side salt-freeze test was used to optimize the concrete mix design for improving the resistance of concrete to salt scaling. The results show that the resistance of concrete to salt scaling improves with decreasing water-cement ratio and increasing air content. Addition of silica fume also improves the resistance of concrete to salt scaling relative to fly ash, ground granulated blast-furnace slag, and other silica fume. To enhance the resistance to salt scaling of concrete pavements, the water-cement ratio should be less than 0.4, the air content higher than 3.8%, and the cementitious materials-aggregate ratio is 265:745 to 280:720. If fly ash and ground-granulated blast-furnace slag are used then extended curing is required to prevent salt scaling in early-age concrete. Finally, organic instead of inorganic snow-melting agents should be preferred.

Key words： road engineering concrete pavement salt scaling air content mineral admixtures

收稿日期: 2013-12-16

基金资助:Supported by the Road and Transport R&D Project for Western Regions of China Commissioned by Ministry of Transport (No.20073182230106)

通讯作者: WANG Ji-liang, jl.wang@rioh.cn E-mail: jl.wang@rioh.cn

引用本文:

王稷良, 申力涛, 牛开民. 路面水泥混凝土抗盐冻性能研究[J]. Journal of Highway and Transportation Research and Development, 2014, 8(2): 7-10.
WANG Ji-liang, SHEN Li-tao, NIU Kai-min. Study on the Salt Scaling Resistance of Pavement Cement Concrete. Journal of Highway and Transportation Research and Development, 2014, 8(2): 7-10.

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http://manu27.magtech.com.cn/Jwk_gljtkj_en/CN/10.3969/j.issn.1002-0268.2013.10.001 或 http://manu27.magtech.com.cn/Jwk_gljtkj_en/CN/Y2014/V8/I2/7

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