PVA纤维分散性及纤维混凝土弯曲韧性试验研究

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发布时间：2020-01-06 00:00:00

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PVA纤维分散性及纤维混凝土弯曲韧性试验研究

Experimental Study on PVA Fiber Dispersion and Bending Toughness of Fiber Reinforced Concrete

2021年第8期

PVA纤维混凝土；拌和工序；分散性；抗压强度；抗拉强度；弯曲韧性

Polyvinyl alcohol fiber reinforced concrete; Mixing process; Dispersion; Compressive strength; Tensile strength; Bending toughness

2021年第8期

10.19761/j.1000-4637.2021.08.049.05

国家科技部重点专项资助项目（2016YFB0303201）。

邓宗才1，赵连志2，丁建明1，贺少锋1

1.北京工业大学城市与工程安全减灾省部共建教育部重点实验室，北京 100124；2.中国路桥工程有限责任公司，北京 100011

邓宗才1，赵连志2，丁建明1，贺少锋1

邓宗才,赵连志,丁建明,等.PVA纤维分散性及纤维混凝土弯曲韧性试验研究[J].混凝土与水泥制品,2021(8):49-53.

DENG Z C,ZHAO L Z,DING J M,et al.Experimental Study on PVA Fiber Dispersion and Bending Toughness of Fiber Reinforced Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):49-53.

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摘要：提出了一种新型纤维混凝土拌和工序和评价纤维分散性的简易方法，并研究了不同掺量PVA纤维对混凝土力学性能和弯曲韧性的影响。结果表明：新型拌合工序可以有效降低对纤维的损伤，有助于纤维在混凝土中均匀分散；当纤维掺量为4.5 kg/m3和7.5 kg/m3时，纤维分散性较好，而当纤维掺量为10.5 kg/m3时，纤维分散性欠佳；随着PVA纤维掺量的增加，混凝土的抗压、抗拉强度先增后减，弯拉强度和韧性耗能能力逐渐增强。 Abstract: A new mixing process of the fiber-reinforced concrete and a simple method for evaluating fiber dispersion were put forward, and the effects of different contents of PVA fiber on the mechanical properties and flexural toughness of concrete were studied. The results show that the new mixing method can effectively reduce the damage to the fiber and help the fiber disperse evenly in the concrete. When the fiber content is 4.5 kg/m3 and 7.5 kg/m3, the fiber dispersion is better, but the fiber dispersion is unsatisfactory when the fiber content is 10.5 kg/m3. With the increase of PVA fiber content, the compressive strength and tensile strength increase first and then decrease, and the flexural tensile strength and the toughness energy dissipation capacity gradually increase.

英文名 : Experimental Study on PVA Fiber Dispersion and Bending Toughness of Fiber Reinforced Concrete

刊期 : 2021年第8期

关键词 : PVA纤维混凝土；拌和工序；分散性；抗压强度；抗拉强度；弯曲韧性

Key words : Polyvinyl alcohol fiber reinforced concrete; Mixing process; Dispersion; Compressive strength; Tensile strength; Bending toughness

刊期 : 2021年第8期

DOI : 10.19761/j.1000-4637.2021.08.049.05

文章编号 :

基金项目 : 国家科技部重点专项资助项目（2016YFB0303201）。

作者 : 邓宗才1，赵连志2，丁建明1，贺少锋1

单位 : 1.北京工业大学城市与工程安全减灾省部共建教育部重点实验室，北京 100124；2.中国路桥工程有限责任公司，北京 100011

邓宗才1，赵连志2，丁建明1，贺少锋1

邓宗才,赵连志,丁建明,等.PVA纤维分散性及纤维混凝土弯曲韧性试验研究[J].混凝土与水泥制品,2021(8):49-53.

DENG Z C,ZHAO L Z,DING J M,et al.Experimental Study on PVA Fiber Dispersion and Bending Toughness of Fiber Reinforced Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):49-53.

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摘要

参数

结论

参考文献

引用本文

摘要：提出了一种新型纤维混凝土拌和工序和评价纤维分散性的简易方法，并研究了不同掺量PVA纤维对混凝土力学性能和弯曲韧性的影响。结果表明：新型拌合工序可以有效降低对纤维的损伤，有助于纤维在混凝土中均匀分散；当纤维掺量为4.5 kg/m³和7.5 kg/m³时，纤维分散性较好，而当纤维掺量为10.5 kg/m³时，纤维分散性欠佳；随着PVA纤维掺量的增加，混凝土的抗压、抗拉强度先增后减，弯拉强度和韧性耗能能力逐渐增强。

Abstract: A new mixing process of the fiber-reinforced concrete and a simple method for evaluating fiber dispersion were put forward, and the effects of different contents of PVA fiber on the mechanical properties and flexural toughness of concrete were studied. The results show that the new mixing method can effectively reduce the damage to the fiber and help the fiber disperse evenly in the concrete. When the fiber content is 4.5 kg/m³ and 7.5 kg/m³, the fiber dispersion is better, but the fiber dispersion is unsatisfactory when the fiber content is 10.5 kg/m³. With the increase of PVA fiber content, the compressive strength and tensile strength increase first and then decrease, and the flexural tensile strength and the toughness energy dissipation capacity gradually increase.

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[1] SAID S H,RAZAK H A,OTHMAN I.Flexural behavior of engineered cementitious composite (ECC) slabs with polyvinyl alcohol fibers[J].Construction and Building Materials,2015(75):176-188.
[2] 赵隆柳,谢军,林鑫,等.PVA对改善再生混凝土抗氯离子渗透性能试验研究[J].硅酸盐通报,2020,39(7):2127-2133.
[3] 安嘉伟,赵建军,刘曙光,等.聚乙烯醇纤维对混凝土抗冻性能的影响[J].混凝土与水泥制品,2019(7):51-54.
[4] 银英姿,仇贝.聚乙烯醇纤维混凝土力学性能及早期开裂试验研究[J].硅酸盐通报,2019,38(2):454-458.
[5] 黄军福,王福胜,崔辉,等.制备工艺对再生骨料透水混凝土中聚乙烯醇纤维分散性的影响[J].硅酸盐通报,2019,38(3):896-900.
[6] 袁龄卿,梁乃兴,赵春花,等.PVA纤维分散程度对水泥砂浆和水泥稳定碎石力学性能的影响[J/OL].建筑材料学报,2020(8):1-15[2020-12-17].https://kns.cnki.net/kcms/detail/31.1764.TU.20200818.0906.002.html.
[7] 肖伟.PVA纤维束搅拌设备作用机理及分散技术研究[D]. 重庆:重庆交通大学,2017.
[8] 曹源文,赵毅,王棋,等.PVA纤维水泥稳定碎石拌和均匀性研究[J].重庆交通大学学报(自然科学版),2018,37(5):29-33.
[9] 刘建忠,张丽辉,李长风,等.聚乙烯醇纤维在水泥基复合材料中的分散性表征及调控[J].硅酸盐学报,2015,43(8):1061-1066.
[10] 张丽辉,郭丽萍,孙伟,等.高延性水泥基复合材料的流变特性和纤维分散性[J].东南大学学报(自然科学版),2014,44(5):1037-1040.
[11] WANG C,JIAO G S,LI B L,et al.Dispersion of carbon fibers and conductivity of carbon fiber-reinforced cement-based composites [J].Ceramics International,2017,43:15122-15132.
[12] GAO J,SHA A M,WANG Z J,et al.Characterization of carbon fiber distribution in cement-based composites by computed tomography [J].Construction and Building Materials,2018,177:134-147.
[13] 余保英,周建伟,孔亚宁,等.PVA纤维长度对超高韧性水泥基复合材料力学性能的影响[J].硅酸盐通报,2020,39(11):3425-3431.
[14] 苏骏,郑辉,郭旺,等.PVA纤维与织物复合增强水泥基材料弯曲韧性研究[J].混凝土与水泥制品,2019(5):52-57.
[15] 张鹏,王磊,王娟,等.纳米CaCO3和PVA纤维增强混凝土工作性及力学性能的研究[J].混凝土与水泥制品,2020(3):42-45,54.
[16] 张正,张勤,刘荣浩,等.不同尺度纤维复合增强高性能细骨料混凝土力学性能试验研究[J].建筑结构,2020,50(22):77-82,61.
[17] 谢磊,李庆华,徐世烺.纤维掺量对聚乙烯醇纤维增强水泥基复合材料动态压缩性能的影响[J/OL].复合材料学报,2020(12):1-14[2020-12-18].https://doi.org/10.13801/j.cnki.fhclxb.20201204.001.
[18] 沈才华,钱晋,陈晓峰,等.PVA纤维混凝土韧性指标计算方法及纤维掺量对力学参数的影响[J].硅酸盐通报,2020,39(10):3152-3160.
[19] 沈才华,钱晋,陈晓峰,等.纤维掺量对PVA纤维混凝土力学参数的影响及压缩韧性指标的计算方法[J].硅酸盐通报,2020,39(10):3152-3160.
[20] 高丹盈,赵亮平,冯虎,等.钢纤维混凝土弯曲韧性及其评价方法[J].建筑材料学报,2014,17(5):783-789.

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