硫酸盐与冻融环境下钢纤维橡胶混凝土的劣化规律研究

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发布时间：2020-01-06 00:00:00

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硫酸盐与冻融环境下钢纤维橡胶混凝土的劣化规律研究

Damage Degradation Law of Steel Fiber Reinforced Rubber Concrete in Sulfate Solution and Freeze-thaw Environment

2021年第7期

钢纤维橡胶混凝土；硫酸盐侵蚀；冻融循环；损伤层厚度；抗压强度

Steel fiber reinforced rubber concrete; Sulfate attack; Freeze-thaw cycle; Damage layer thickness; Compressive strength

2021年第7期

10.19761/j.1000-4637.2021.07.052.06

河南省科技攻关计划项目（182102310763）；河南省高等学校重点项目（18A560005）。

姜磊1，魏颖旗2，张明1，杨玉东1

1.安阳师范学院建筑工程学院，河南安阳 455000；2.安阳市市政维护发展中心，河南安阳 455000

姜磊1，魏颖旗2，张明1，杨玉东1

姜磊，魏颖旗，张明,等.硫酸盐与冻融环境下钢纤维橡胶混凝土的劣化规律研究[J].混凝土与水泥制品,2021(7):52-56,62.

JIANG L,WEI Y Q,ZHANG M,et al.Damage Degradation Law of Steel Fiber Reinforced Rubber Concrete in Sulfate Solution and Freeze-thaw Environment[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):52-56,62.

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1000

摘要：通过快速冻融试验，测试了不同冻融循环次数后钢纤维橡胶混凝土的质量、相对动弹性模量、抗压强度及损伤层厚度，研究了硫酸盐与冻融环境下钢纤维橡胶混凝土的劣化规律与损伤机理。结果表明：钢纤维橡胶混凝土在硫酸盐溶液中的冻融损伤小于未掺钢纤维的橡胶混凝土；钢纤维橡胶混凝土的劣化程度随钢纤维掺量的增加逐渐减小，但当钢纤维掺量为2.0%时，劣化程度明显增大；损伤层厚度可以表征钢纤维橡胶混凝土的内部损伤，随损伤层厚度增加，损伤层混凝土的抗压强度损失明显；硫酸盐与冻融环境下钢纤维橡胶混凝土的抗压强度与损伤层抗压强度存在相关性，根据劣化后钢纤维橡胶混凝土的抗压强度可计算出损伤层抗压强度。 Abstract：Through the freeze-thaw tests, the weight, relative dynamic elastic modulus, compressive strength and damage layer thickness of steel fiber reinforced rubber concrete(SFRRC) after different freeze-thaw cycles were tested. The deterioration law and damage mechanism of SFRRC under sulfate and freeze-thaw environment were studied. The results show that the freeze-thaw damage of SFRRC in sulfate solution is less than that of rubber concrete without steel fiber. The deterioration degree of SFRRC decreases with the increase of steel fiber content, but the deterioration degree of SFRRC increases obviously when steel fiber content is 2.0%. The damage layer thickness can be used to characterize the internal damage of SFRRC. With the increase of damage layer thickness, the compressive strength loss of damaged layer concrete is obviously. There is a correlation between the compressive strength of SFRRC and the compressive strength of damaged layer under sulfate and freeze-thaw environment. According to the compressive strength of deteriorated SFRRC, the compressive strength of damaged layer can be calculated.

英文名 : Damage Degradation Law of Steel Fiber Reinforced Rubber Concrete in Sulfate Solution and Freeze-thaw Environment

刊期 : 2021年第7期

关键词 : 钢纤维橡胶混凝土；硫酸盐侵蚀；冻融循环；损伤层厚度；抗压强度

Key words : Steel fiber reinforced rubber concrete; Sulfate attack; Freeze-thaw cycle; Damage layer thickness; Compressive strength

刊期 : 2021年第7期

DOI : 10.19761/j.1000-4637.2021.07.052.06

文章编号 :

基金项目 : 河南省科技攻关计划项目（182102310763）；河南省高等学校重点项目（18A560005）。

作者 : 姜磊1，魏颖旗2，张明1，杨玉东1

单位 : 1.安阳师范学院建筑工程学院，河南安阳 455000；2.安阳市市政维护发展中心，河南安阳 455000

姜磊1，魏颖旗2，张明1，杨玉东1

姜磊，魏颖旗，张明,等.硫酸盐与冻融环境下钢纤维橡胶混凝土的劣化规律研究[J].混凝土与水泥制品,2021(7):52-56,62.

JIANG L,WEI Y Q,ZHANG M,et al.Damage Degradation Law of Steel Fiber Reinforced Rubber Concrete in Sulfate Solution and Freeze-thaw Environment[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):52-56,62.

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摘要

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结论

参考文献

引用本文

Abstract：Through the freeze-thaw tests, the weight, relative dynamic elastic modulus, compressive strength and damage layer thickness of steel fiber reinforced rubber concrete(SFRRC) after different freeze-thaw cycles were tested. The deterioration law and damage mechanism of SFRRC under sulfate and freeze-thaw environment were studied. The results show that the freeze-thaw damage of SFRRC in sulfate solution is less than that of rubber concrete without steel fiber. The deterioration degree of SFRRC decreases with the increase of steel fiber content, but the deterioration degree of SFRRC increases obviously when steel fiber content is 2.0%. The damage layer thickness can be used to characterize the internal damage of SFRRC. With the increase of damage layer thickness, the compressive strength loss of damaged layer concrete is obviously. There is a correlation between the compressive strength of SFRRC and the compressive strength of damaged layer under sulfate and freeze-thaw environment. According to the compressive strength of deteriorated SFRRC, the compressive strength of damaged layer can be calculated.

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硫酸盐与冻融环境下钢纤维橡胶混凝土的劣化规律研究

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