玄武岩-聚乙烯醇纤维对再生混凝土抗冻性能的影响

doi:10.11988/ckyyb.20221566

院报 ›› 2024, Vol. 41 ›› Issue (4): 187-193.DOI: 10.11988/ckyyb.20221566

玄武岩-聚乙烯醇纤维对再生混凝土抗冻性能的影响

司政^1,2, 田爽¹, 皇甫秉辉³, 黄灵芝¹, 杜晓奇¹, 张飞跃⁴

1.西安理工大学水利水电学院, 西安 710048;
2.西安理工大学西北旱区生态水利工程国家重点实验室,西安 710048;
3.四川水发勘测设计研究院有限公司,成都 610072 ;
4.西安理工大学三期建设管理处,西安 710048

收稿日期:2022-11-21 修回日期:2023-03-01 出版日期:2024-04-01 发布日期:2024-04-11
作者简介:司政(1981-),男,湖北黄冈人,教授,博士,研究方向为水工混凝土材料性能研究。E-mail: sizheng@xaut.edu.cn
基金资助:
国家自然科学基金项目(51879217, 51409207, 51609200)

Influence of Basalt-Polyvinyl Alcohol Fiber on Frost Resistance of Recycled Concrete

SI Zheng^1,2, TIAN Shuang¹, HUANGFU Bing-hui³, HUANG Ling-zhi¹, DU Xiao-qi¹, ZHANG Fei-yue⁴

1. School of Water Resources and Hydropower, Xi'an University of Technology, Xi'an 710048, China;
2. State Key Laboratory of Ecological Water Conservancy Engineering in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, China;
3. Sichuan Water Resources and Hydropower Survey, Design and Research Institute Co., Ltd., Chengdu 610072, China;
4. Construction Management Office of the Third Phase of Xi'an University of Technology, Xi'an 710048, China

Received:2022-11-21 Revised:2023-03-01 Online:2024-04-01 Published:2024-04-11

摘要/Abstract

摘要： 为了推广再生混凝土在高海拔和北方寒冷地区的应用,对单掺、混掺不同体积掺量玄武岩纤维和聚乙烯醇纤维的再生混凝土进行质量损失率、相对动弹性模量、抗压强度损失率3项抗冻性能指标的探究,并用SEM对200次冻融循环后混掺纤维再生混凝土进行细观作用机理分析,最后结合响应面法对混掺纤维掺量进行优选。结果显示:外掺纤维能够提高再生混凝土的抗冻性能,而混掺纤维效果优于单掺纤维;2种纤维在试件内部呈网状分布,协同受力,与基体互相约束,很大程度限制了裂缝的扩展和数量;纤维优化结果显示当聚乙烯醇纤维与玄武岩体积掺量分别为0.170%和0.246%时,再生混凝土的抗冻性能最优。研究成果对玄武岩-聚乙烯醇纤维再生混凝土纤维掺量设计具有一定的借鉴意义。

关键词: 再生混凝土, 混掺纤维, 纤维掺量优选, 冻融循环, 响应面法

Abstract: To enhance the utilization of recycled aggregate concrete (RAC) in high-altitude and cold regions of northern China, we investigated three anti-freezing performance indicators, namely, mass loss rate (MLR), relative dynamic elastic modulus (RDEM), and compressive strength loss rate (CSLR) of RAC reinforced with single and combined basalt fiber (BF) and polyvinyl alcohol fiber (PVAF). Scanning electron microscopy (SEM) was employed to analyze the meso-mechanical behavior of the mixed-fiber recycled concrete following 200 freeze-thaw cycles. Subsequently, the optimal mixed fiber content was determined using the response surface method. Findings indicate that fiber additives enhance the frost resistance of recycled concrete, with the combined fiber exhibiting superior performance compared to single fiber. Both BF and PVAF are intricately interwoven within the specimen's network, synergistically reinforcing the structure while mitigating crack formation. Optimization analysis reveals that the optimal volume content of PVAF and BF is 0.170% and 0.246%, respectively, yielding the highest frost resistance in recycled concrete. These results offer valuable insights for the design of basalt-polyvinyl alcohol fiber content in recycled concrete applications.

Key words: recycled concrete, mixed fiber, optimized fiber content, freeze-thaw cycle, response surface method

中图分类号:

TU398.9

司政, 田爽, 皇甫秉辉, 黄灵芝, 杜晓奇, 张飞跃. 玄武岩-聚乙烯醇纤维对再生混凝土抗冻性能的影响[J]. 院报, 2024, 41(4): 187-193.

SI Zheng, TIAN Shuang, HUANGFU Bing-hui, HUANG Ling-zhi, DU Xiao-qi, ZHANG Fei-yue. Influence of Basalt-Polyvinyl Alcohol Fiber on Frost Resistance of Recycled Concrete[J]. Journal of Yangtze River Scientific Research Institute, 2024, 41(4): 187-193.

[1]	李骞, 罗璟, 裴向军, 曾坤翔, 单诗涵, 江荣昊. 秸秆纤维加筋固化土物理力学特性与抗冻融性能试验研究[J]. 院报, 2024, 41(1): 128-135.
[2]	张小荣, 马艳霞, 张吾渝. 春融期根-土复合体边坡稳定性影响因素研究[J]. 院报, 2023, 40(11): 154-159.
[3]	李永靖, 王松, 张淑坤, 冯佃芝. 碳纳米管增强粉煤灰泡沫混凝土的制备及变形特性[J]. 院报, 2023, 40(11): 175-183.
[4]	姚泽良, 令狐恬晶, 祁亚伦, 党发宁, 闻硕, 崔婷婷. 随机球形骨料再生混凝土氯离子扩散研究[J]. 院报, 2023, 40(11): 184-188.
[5]	姚泽良, 崔婷婷, 党发宁, 闻硕, 令狐恬晶, 祁亚伦. 基于ABAQUS的再生混凝土塑性损伤性能[J]. 院报, 2022, 39(9): 131-136.
[6]	魏密, 李雪芹, 余承喜. 冻融黏土动态回弹模量演变规律及预估模型[J]. 院报, 2022, 39(11): 102-106.
[7]	倪静, 贺青青, 李杉杉, 马蕾, 张淑玲. 水质污染和冻害作用下粉煤灰水泥土宏微观物理力学特性的相关性研究[J]. 院报, 2021, 38(9): 97-104.
[8]	孙韬. 冻融循环对水泥土三轴强度指标与裂隙演化规律的影响[J]. 院报, 2021, 38(8): 127-132.
[9]	张肃, 丁秀丽, 黄书岭. 基于均匀设计-响应面-有限元法的软岩隧洞围岩与衬砌结构协同承载可靠性分析[J]. 院报, 2021, 38(6): 79-85.
[10]	王景辉, 张卫兵, 唐莲, 赵文娟. 水盐运移对硫酸盐渍土盐-冻胀规律的影响[J]. 院报, 2021, 38(6): 108-115.
[11]	牛建刚, 边钰, 许尧, 谢承斌. 冻融环境下钢筋与再生混凝土粘结性能及界面损伤研究[J]. 院报, 2021, 38(4): 132-137.
[12]	崔高航, 朱成浩. 冻融循环下饱和含黏粒粉砂动力学参数试验[J]. 院报, 2021, 38(3): 77-82.
[13]	沈小轲, 朱杰兵, 王小伟, 汪斌, 李聪. 冻融循环下云母石英片岩三轴力学特性与强度预测模型[J]. 院报, 2021, 38(3): 83-89.
[14]	董伟, 肖阳, 苏英. 盐冻作用下风积沙混凝土中氯离子扩散研究[J]. 院报, 2021, 38(2): 125-130.
[15]	徐鹏飞, 李泽莹, 王银梅, 董岩. 冻融循环对新型高分子材料SH固化黄土力学特性的影响试验研究[J]. 院报, 2021, 38(1): 137-141.

玄武岩-聚乙烯醇纤维对再生混凝土抗冻性能的影响

Influence of Basalt-Polyvinyl Alcohol Fiber on Frost Resistance of Recycled Concrete

PDF

可视化

摘要/Abstract

引用本文

使用本文

相关文章 15

编辑推荐

Metrics

本文评价