基于正交试验的聚丙烯纤维再生混凝土力学性能分析Mechanical Properties Analysis of Polypropylene Fiber Recycled Concrete Based on Orthogonal Test
周鹏,刘永军
ZHOU Peng,LIU Yong-jun
摘要(Abstract)：
通过正交试验研究了聚丙烯纤维直径、长度、掺入质量分数对再生混凝土单轴抗压强度和劈裂抗拉强度的影响，结果表明：随着养护时间的延长，聚丙烯纤维的直径、长度和掺入质量分数对再生混凝土单轴抗压强度和劈裂抗拉强度的影响程度也在改变；当聚丙烯纤维直径为0.2 mm、长度为40 mm、掺入质量分数为0.1%时，再生混凝土力学性能最优；聚丙烯纤维质量分数和长度是影响再生混凝土材料强度的重要因素。
The effects of polypropylene fiber diameter, length and mass fraction on the single axis compressive strength and splitting tensile strength of recycled concrete were studied through orthogonal experiments. The results show that with the increase of curing time, the influence of the diameter, length and mass fraction of polypropylene fiber on the single axis compressive strength and splitting tensile strength of recycled concrete is also changing. When the diameter of polypropylene fiber is 0.2 mm, the length is 40 mm and the mass fraction is 0.1 %, the mechanical properties of recycled concrete are the best. The mass fraction and length of polypropylene fiber are important factors affecting the strength of recycled concrete materials.
关键词(KeyWords)：
聚丙烯纤维;再生混凝土;正交试验;力学性能
polypropylene fiber;recycled concrete;orthogonal test;mechanical property
基金项目(Foundation): 河南省交通厅科研项目(2021J10)
作者(Author):
周鹏,刘永军
ZHOU Peng,LIU Yong-jun
DOI: 10.16090/j.cnki.hcxw.2022.01.019
参考文献(References)：
- [1] EGUCHI K, TERANISHI K, NAKAGOME A, et al. Application of recycled coarse aggregate by mixture to concrete construction[J]. Construction and Building Materials, 2007, 21(7):1542-1551.
- [2] KOU S C, POON C S, ETEXBERRIA M. Influence of recycled aggregates on long term mechanical properties and pore size distribution of concrete[J]. Cement and Concrete Composites, 2011, 33(2):286-291.
- [3] ZHU Y G, KOU S C, POON C S, et al. Influence of silane-based water repellent on the durability properties of recycled aggregate concrete[J]. Cement and Concrete Composites, 2013, 35(1):32-38.
- [4]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.
- [5]张广泰,张路杨,邢国华,等.聚丙烯纤维混凝土梁受剪承载力试验研究[J].湖南大学学报(自然科学版), 2020, 47(5):70-77.
- [6] WANG D H, JU Y H, SHEN H, et al. Mechanical properties of high performance concrete reinforced with basalt fiber and polypropylene fiber[J]. Construction and Building Materials, 2019, 197(4):464-473.
- [7]梁宁慧,钟杨,刘新荣.多尺寸聚丙烯纤维混凝土抗弯韧性试验研究[J].中南大学学报(自然科学版), 2017, 48(10):2783-2789.
- [8] REZA A, HAMID P B, SHAHRAM J M. Effects of high temperatures on mechanical behavior of high strength concrete reinforced with high performance synthetic macro polypropylene(HPP)fibers[J]. Construction and Building Materials, 2018, 165(8):631-638.
- [9]靳贺松,李福海,何肖云峰,等.聚丙烯纤维水泥基复合材料的抗冻性能研究[J].材料导报, 2020, 34(8):8071-8076+8082.
- [10]邱继生,邢敏,杨占鲁,等.冻融作用下聚丙烯纤维煤矸石混凝土孔结构研究[J].混凝土与水泥制品, 2020(6):41-44.
- [11]曹聪,王功勋,李松倍.用于防排水预制构件的聚丙烯纤维混凝土性能试验研究[J].硅酸盐通报, 2014, 33(4):773-777.
- [12]杨晓东,陶俊林.高掺量钢-聚丙烯混杂纤维高强混凝土抗弯韧性试验研究[J].混凝土与水泥制品, 2016(4):56-59.
- [13]杨彬.聚丙烯纤维对高强混凝土抗压强度的影响研究[J].混凝土与水泥制品, 2017(2):55-59.