不同侵蚀环境下PVA-FRCC抗硫酸盐侵蚀性能研究

Study on Sulfate Attack Resistance of PVA-FRCC under Different Corrosion Environment

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关键词:

聚乙烯醇纤维;水泥基复合材料;抗硫酸盐侵蚀;不同侵蚀环境

Key words:

Polyvinyl alcohol fiber; Cementitious composite material; Sulfate attack resistance; Different corrosion environment

刊期:

2016年第4期

DOI:

文章编号:

1000-4637(2016)04-52-04

基金项目:

国家自然科学基金项目(51368041,51168033);内蒙古自然科学基金项目(2012MS0706,2013MS0709);内蒙古自治区高等学校科学研究项目(NJZY13104,NJZY093)

作者:

赵晓明,邬 迪,刘曙光

单位:

内蒙古工业大学,呼和浩特 010051)

摘要

摘   要:对聚乙烯醇纤维增强水泥基复合材料(PVA-FRCC)在干湿循环和长期浸泡作用下分别进行了抗硫酸钠侵蚀试验研究,分析对比了不同侵蚀环境下PVA-FRCC的质量变化、体积变化和抗压强度变化。结果表明,在纤维掺量小于1%时,侵蚀环境对PVA-FRCC抗硫酸盐侵蚀性能影响明显,表现为干湿循环作用下侵蚀劣化程度更严重;在纤维掺量大于1%时,侵蚀环境对PVA-FRCC抗硫酸盐侵蚀性能影响不明显。

Abstract: The experimental research of polyvinyl alcohol fiber reinforced cementitous composites( PVA-FRCC ) on resist corrosion of sodium sulfate in wet dry cycle and long-term immersion is carried out, the changes of PVA-FRCC on quality, volume and compressive strength under different immersion environment are analyzed and compared. The results show that, when fiber content is less than 1%,  the erosion environment has obvious influence on the corrosion resistance of PVA-FRCC, corrosion deterioration degree is more serious under wet dry cycle; as fiber dosage more than 1%, the influence on sulfate attack resistance of PVA-FRCC in corrosion environment is not obvious. 

结论

(1)干湿循环条件下的侵蚀程度较长期浸泡条件更严重。
(2)在纤维掺量小于1%时,侵蚀环境对PVA-FRCC抗硫酸盐侵蚀性能影响明显;在纤维掺量大于1%时,侵蚀环境对PVA-FRCC抗硫酸盐侵蚀性能影响不明显。

参考文献

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