Electrical conductivity of cement reinforced with recycled CFRP

doi:10.19936/j.cnki.2096-8000.20220928.007

Abstract

Abstract: As high-performance materials, Carbon Fiber-Reinforced Polymer (CFRP) has been widely used in many fields. However, due to the large amount of FRP scraps generated during the production of CFRP, this may bring serious environmental problems, and also cause a waste of resources. In this paper, the CFRP scraps generated during production was treated and added into cement, and the effect of recycled CFRP waste on the mechanical properties and electrical conductivity of cement was studied. The results show that proper amount of recycled CFRP can enhance the compressive and flexural properties of cement. When the amount of recycled CFRP in cement is not high, the reduction in electric resistance of cement is not remarkable. When the amount of recycled CFRP in cement reaches 4%, the electric resistance of cement-based materials decreases sharply. When the amount of recycled CFRP in cement continues to increase, a conductive path mechanism is formed in cement by the carbon fiber in recycled CFRP, and the electric resistance has been reduced to a minimum value and does not change significantly with the age. The study also shows that the electric resistance of cement increases with the increase of the age for cement specimens, and it increases first and then decreases with the decrease of water content in the drying process. Current research can not only help to solve the problem caused by the CFRP waste, but also to greatly relieve the environmental pressure brought by CFRP waste.

Key words: recycled CFRP, scraps, mechanical property, electric resistance, water content

CLC Number:

TB332

WU Zhen-hua, LIU Yao, ZHANG Zhi-fang. Electrical conductivity of cement reinforced with recycled CFRP[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(9): 48-53.

References

[1] 邢丽英, 冯志海, 包建文. 碳纤维及树脂基复合材料产业发展面临的机遇与挑战[J]. 复合材料学报, 2020, 37(11): 2700-2706.
[2] 胡侨乐, 端玉芳, 刘志, 等. 碳纤维增强聚合物基复合材料回收再利用现状[J]. 复合材料学报, 2022, 39(1): 64-76.
[3] 胡炜杰, 钟明建, 杨营, 等. 碳纤维复合材料的回收与再利用技术[J]. 材料导报, 2021, 35(S2): 627-633.
[4] ORTEGON K, NIES L F, SUTHERLAND J W. Preparing for end of service life of wind turbines[J]. Journal of Cleaner Production, 2013, 39: 191-199.
[5] 惠林海, 张璐, 李华, 等. 碳纤维增强树脂复合材料废弃物回收技术研究现状[J]. 工程塑料应用, 2020, 48(8): 149-152.
[6] 刘汉, 童谷生. 碳纤维水泥基复合材料力电性能及尺寸效应研究进展[J]. 玻璃钢/复合材料, 2011(2): 53-59.
[7] CHEN B, WU K, YAO W. Conductivity of carbon fiber reinforced cement-based composites[J]. Cement & Concrete Composites, 2004, 26(4): 291-297.
[8] 刘小艳, 姚武, 吴科如. 碳纤维水泥基复合材料温敏特性研究[J]. 河海大学学报(自然科学版), 2007(2): 202-204.
[9] 王玉林, 赵晓华, 朱德良, 等. 碳纤维水泥基复合材料压敏性的灵敏度及机理分析[J]. 硅酸盐通报, 2013, 32(9): 1817-1821.
[10] TIAN Z, LI Y, ZHENG J, et al. A state-of-the-art on self-sensing concrete: Materials, fabrication and properties[J]. Composites Part B-Engineering, 2019, 177: 107437.
[11] 吴伟, 冯虎. 碳纤维混凝土动态力学特性试验研究[J]. 复合材料科学与工程, 2021(10): 13-18.
[12] 全国水泥标准化技术委员会. 水泥胶砂强度检验方法(ISO法): GB/T 17671—1999[S]. 北京: 中国标准出版社, 1999.
[13] 韩宝国, 关新春, 欧进萍. 碳纤维水泥石电阻测试方法研究[J]. 玻璃钢/复合材料, 2003(6): 6-8.
[14] 龚宏伟, 江世永, 陈进, 等. 纤维增强水泥基复合材料弯曲性能与纤维作用机理研究[J]. 玻璃钢/复合材料, 2019(10): 19-25.
[15] 南雪丽, 李晓民, 卢学峰, 等. 碳纤维水泥基复合材料导电机理的探讨[J]. 兰州理工大学学报, 2012, 38(2): 114-119.
[16] 葛宇川, 刘数华. 碳纤维导电混凝土特性研究进展[J]. 硅酸盐通报, 2019, 38(8): 2442-2447.
[17] LI X, ZHAO R, ZHANG J. Research on tunnel effect of carbon black-filled cement-based composites[J]. Materials and Design, 2011, 284-286(1-3): 153-156.
[18] 刘军, 赵晓华, 王玉林. 含水量对碳纤维水泥基复合材料电性能的影响[J]. 混凝土与水泥制品, 2004(6): 35-38.
[19] 申嘉荣, 徐千军. 高温对混凝土孔隙结构改变和抗压强度降低作用的规律研究[J]. 材料导报, 2020, 34(2): 2046-2051.
[20] ZHOU C, REN F, WANG Z, et al. Why permeability to water is anomalously lower than that to many other fluids for cement-based material[J]. Cement and Concrete Research, 2017, 100: 373-384.
[21] 王艳, 张彤昕, 郭冰冰, 等. 回收碳纤维混凝土导电性[J]. 复合材料学报, 2022, 39(6): 2855-2863.