Influence of different surface curing materials on pavement concrete properties

Q4 Engineering

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Pub Date : 2022-11-01 DOI:10.3724/sp.j.1249.2022.06642

Tianlun Li, Yonggen Wu, Haoxiang Wu

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引用次数: 0

Abstract

摘要:为研究硅酸乙酯、硅渗剂和纳米SiO2表面固化处理对机场道面混凝土性能的影响,分别对经过3种表面固化材料处理后的混凝土的毛细吸水性、耐火蚀性、抗水渗透性、抗冻性和抗硫酸盐侵蚀性进行测试,分析表面固化材料在机场道面的适用性 . 结果表明,硅渗剂的综合表现优异,处理后混凝土的渗水高度降低率达到44. 2%,而且施工工艺成熟,最适合作为机场道面混凝土的表面固化材料;硅酸乙酯的性能改善效果显著,处理后混凝土的 7 d吸水量降低 90%,经过 60 min火蚀后仍能达到 68. 1%,抗冻等级由F125提高至F175,但混合溶液具有一定的易爆性,在机场道面混凝土上的应用还需要深入探究;纳米 SiO2的性能改善效果在3种表面固化材料中不够明显,不推荐应用于机场道面混凝土 . 研究结果可为机场工程中表面固化材料的选择提供借鉴 . 关键词:建筑材料;混凝土;表面固化;硅酸乙酯;硅渗剂;纳米SiO2;机场道面中图分类号:TU528. 58 文献标志码:A doi:10. 3724/SP. J. 1249. 2022. 06642

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不同表面养护材料对路面混凝土性能的影响

Abstract: In order to study the effects of surface curing treatment with ethyl silicate, siliconizing agent, and nano SiO2 on the performance of airport pavement concrete, the capillary water absorption, fire resistance, water permeability resistance, frost resistance, and sulfate attack resistance of concrete treated with three surface curing materials were tested, and the applicability of surface curing materials on airport pavement was analyzed The results show that the comprehensive performance of the silicon penetrating agent is excellent, and the reduction rate of the water permeability height of the treated concrete reaches 44. 5% 2%, and the construction process is mature, making it the most suitable surface curing material for airport pavement concrete; The performance improvement effect of ethyl silicate is significant. After treatment, the water absorption of concrete after 7 days decreases by 90%, and after 60 minutes of fire corrosion, it can still reach 68 1%, the frost resistance level has been increased from F125 to F175, but the mixed solution has a certain degree of explosiveness, and its application in airport pavement concrete still needs further exploration; The performance improvement effect of nano SiO2 is not significant among the three surface curing materials and is not recommended for use in airport pavement concrete The research results can provide reference for the selection of surface curing materials in airport engineering Keywords: building materials; Concrete; Surface curing; Ethyl silicate; Silicone penetrating agent; Nano SiO2; Classification number of airport pavement: TU528 58 Reference code: A doi: 10 3724/SP J. 1249 2022. 06642

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来源期刊

Shenzhen Daxue Xuebao (Ligong Ban)/Journal of Shenzhen University Science and Engineering Engineering-Engineering (miscellaneous)

CiteScore

0.90

自引率

0.00%

发文量