合成材料老化与应用2024，Vol.53Issue(6)：83-85,3.
桥梁工程用纤维混凝土抗硫酸盐侵蚀性能研究
Research on Sulfate Corrosion Resistance of Fiber Reinforced Concrete for Bridge Engineering
曹艳1
作者信息
- 1. 延安职业技术学院农林与建筑工程系,陕西延安 716000
- 折叠
摘要
Abstract
In order to improve the sulfate corrosion resistance of concrete used in bridge engineering in coastal areas,the influence of modified polyvinyl alcohol fiber PVA-4 content on the sulfate corrosion resistance of concrete was investigated through sulfate dry wet cycle test.The results show that with the increase of modified polyvinyl alcohol fiber PVA-4 content,the mass change of concrete specimens after different cycles of wet dry cycle in different concentrations of sulfate solution first decreases and then increases,while the compressive strength change rate and relative dynamic elastic modulus both increase first and then decrease.When the dosage of modified polyvinyl alcohol fiber PVA-4 is 1.2 kg/m3,the mass change rate of concrete specimens is the smallest,the reduction in compressive strength is the smallest,and the relative dynamic elastic modulus can reach the maximum,effectively improving the sulfate corrosion resistance of concrete used in bridge engineering.The research results suggest that the addition of modified polyvinyl alcohol fiber PVA-4 can effectively improve the sulfate resistance of concrete and meet the needs of bridge construction in coastal areas.关键词
桥梁工程/纤维混凝土/改性聚乙烯醇纤维/抗硫酸盐侵蚀/干湿循环Key words
bridge engineering/fiber reinforced concrete/modified polyvinyl alcohol fiber/resistance to sulfate erosion/dry wet cycle分类
建筑与水利引用本文复制引用
曹艳..桥梁工程用纤维混凝土抗硫酸盐侵蚀性能研究[J].合成材料老化与应用,2024,53(6):83-85,3.
