Composite shear mechanical properties of carbon fiber recycled aggregate concrete

被引：0
|
作者：
Chen Y. [1 ,2 ]
Li T. [1 ]
Jiang R. [1 ]
Xu H. [2 ]
机构：
[1] College of Civil and Architecture Engineering, Guangxi University of Science and Technology, Liuzhou
[2] Liuzhou Orient Engineering Rubber Products CO., LTD., Liuzhou
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2023年 / 40卷 / 07期
基金：
中国博士后科学基金;
关键词：
carbon fiber; composite shear; damage evolution; recycled aggregate concrete; shear strength;
D O I：
10.13801/j.cnki.fhclxb.20221011.001
中图分类号：
学科分类号：
摘要：
To study the mechanical properties of carbon fiber recycled aggregate concrete under composite shear condition, the composite shear test of 102 cube specimens was completed with recycled coarse aggregate replacement rate, compressive stress ratio and carbon fiber content as test parameters. The failure mode of carbon fiber reinforced recycled concrete specimens was observed, and the load-displacement curve under shear state was obtained. The effects of three kinds of change parameters on the shear strength, peak displacement, and damage evolution law of specimens were analyzed. The research shows that the compressive stress ratio has a significant indigenous effect on the failure mode of the carbon fiber reinforced recycled concrete specimen, and the number and angle of cracks increase with the increase of the compressive stress ratio. 0.3vol% content of carbon fiber can improve the shear strength of the specimen by about 12%. When the compressive stress ratio increases from 0 to 0.09 and 0.18, the shear strength of the specimen is 2.34 and 3.25 times that of the specimen, respectively. The recycled coarse aggregate replacement rate has little effect on the peak shear strength. Increasing the compression stress ratio can effectively slow down the development of damage, and the adopted damage constitutive can better reflect the shear-displacement relationship of composite shear. © 2023 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.
引用
收藏
页码：4107 / 4116
页数：9
相关论文
共 26 条
  • [1] CHEN Y L, CHEN Z P, XU J J, Et al., Performance evaluation of recycled aggregate concrete under multiaxial compression[J], Construction and Building Materials, 229, (2019)
  • [2] WASEEM S A, SINGH B., An experimental study on shear capacity of interfaces in recycled aggregate concrete[J], Structural Concrete, 19, 1, pp. 1-2, (2018)
  • [3] XIAO J Z, XIAO Y, LIU Y, Et al., Carbon emission analyses of concretes made with recycled materials considering CO<sub>2</sub> uptake through carbonation absorption[J], Structural Concrete, 22, S1, pp. E58-E73, (2021)
  • [4] SUN C, LANGE D A, XIAO J, Et al., Contact behavior between cracked surfaces of recycled aggregate concrete[J], Construction and Building Materials, 155, pp. 1168-1178, (2017)
  • [5] WU H, WANG C, MA Z., Drying shrinkage, mechanical and transport properties of sustainable mortar with both recycled aggregate and powder from concrete waste[J], Journal of Building Engineering, 49, (2022)
  • [6] WANG R, ZHANG Y X., Recycling fresh concrete waste: A review[J], Structural Concrete, 19, 6, pp. 1939-1955, (2018)
  • [7] EL-HAWARY M, AL-SULILY A., Internal curing of recycled aggregates concrete[J], Journal of Cleaner Production, 275, (2020)
  • [8] GAO Danying, JING Jiahua, ZHOU Xiao, Reinforcing mechanism and calculation method of compressive behavior of hybrid fiber reinforced recycled brick aggregates concrete, Acta Materiae Compositae Sinica, 35, 12, pp. 3441-3449, (2018)
  • [9] CHEN Yuliang, LI Hao, YE Peihuan, Et al., Experimental study on mechanical behavior of steel fiber recycled concrete under cyclic com-pression[J], Acta Materiae Compositae Sinica, 39, 11, pp. 5574-5585, (2018)
  • [10] DING Yahong, GUO Shuqi, ZHANG Xianggang, Et al., Influence of basalt fiber on the anti-carbonation performance of recycled aggregate concrete, Acta Materiae Compositae Sinica, 39, 3, pp. 1228-1238, (2022)
123