留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

碳纤维再生混凝土复合受剪力学性能试验

陈宇良 李堂 姜锐 徐鸿飞

陈宇良, 李堂, 姜锐, 等. 碳纤维再生混凝土复合受剪力学性能试验[J]. 复合材料学报, 2023, 40(7): 4107-4116. doi: 10.13801/j.cnki.fhclxb.20221011.001
引用本文: 陈宇良, 李堂, 姜锐, 等. 碳纤维再生混凝土复合受剪力学性能试验[J]. 复合材料学报, 2023, 40(7): 4107-4116. doi: 10.13801/j.cnki.fhclxb.20221011.001
CHEN Yuliang, LI Tang, JIANG Rui, et al. Composite shear mechanical properties of carbon fiber recycled aggregate concrete[J]. Acta Materiae Compositae Sinica, 2023, 40(7): 4107-4116. doi: 10.13801/j.cnki.fhclxb.20221011.001
Citation: CHEN Yuliang, LI Tang, JIANG Rui, et al. Composite shear mechanical properties of carbon fiber recycled aggregate concrete[J]. Acta Materiae Compositae Sinica, 2023, 40(7): 4107-4116. doi: 10.13801/j.cnki.fhclxb.20221011.001

碳纤维再生混凝土复合受剪力学性能试验

doi: 10.13801/j.cnki.fhclxb.20221011.001
基金项目: 中国博士后科学基金(2021 M693854);广西科技大学博士基金项目(校科博18 Z09)
详细信息
    通讯作者:

    陈宇良,博士,副教授,硕士生导师,研究方向为再生混凝土结构、钢-混凝土组合结构 E-mail: ylchen@gxust.edu.cn

  • 中图分类号: TU528.01;TU317.1;TB333

Composite shear mechanical properties of carbon fiber recycled aggregate concrete

Funds: Postdoctoral Science Foundation of China (2021 M693854); Doctoral Foundation of Guangxi University of Science and Technology (18 Z09)
  • 摘要: 为研究碳纤维再生混凝土复合受剪状态下的力学性能,以碳纤维掺量、压应力比、再生粗骨料取代率为试验参数,完成了102个立方体试件的复合受剪试验。试验观察了碳纤维再生混凝土试件的破坏形态,获取了剪切状态下荷载-位移曲线,分析了3种试验参数对试件剪切强度、峰值位移及损伤演化规律的影响。研究表明:压应力比对碳纤维再生混凝土试件的破坏形态有显著影响,随着压应力比的增大,试件的裂缝数量和角度增大;0.3vol%掺量的碳纤维可提高试件剪切强度12%左右,压应力比由0增至0.09和0.18后,试件剪切强度时分别是其的2.34倍、3.25倍,再生粗骨料取代率对峰值剪切强度影响较小;增大压应力比可有效减缓损伤的发展;采用的损伤本构能较好的反映复合受剪的剪力-位移关系。

     

  • 图  1  加载装置及力学模型示意图

    Figure  1.  Schematic diagram of loading device and mechanical model

    σ—Normal stress; τ—Shear strength

    图  2  碳纤维再生混凝土试件典型破坏形态图

    Figure  2.  Typical failure pattern diagram of carbon fiber recycled aggregate concrete specimens

    k—Compressive stress ratio

    图  3  碳纤维再生混凝土剪力τ-位移s全过程曲线

    Figure  3.  Shear τ-displacement s whole process curves of carbon fiber recycled aggregate concrete

    Vf—Volume content of carbon fiber; r—Recycledcoarse aggregate replacement rate

    图  4  碳纤维掺量Vf与碳纤维再生混凝土剪切强度τ的关系

    Figure  4.  Relationship between Vf and τ of carbon fiber recycled aggregate concrete

    图  5  纤维掺量Vf与碳纤维再生混凝土剪切位移s的关系

    Figure  5.  Relationship between Vf and s of carbon fiber recycled aggregate concrete

    图  6  压应力比k与碳纤维再生混凝土剪切强度τ的关系

    Figure  6.  Relationship between k and τ of carbon fiber recycled aggregate concrete

    图  7  压应力比k与碳纤维再生混凝土峰值位移s的关系

    Figure  7.  Relationship between k and s of carbon fiber recycled aggregate concrete

    图  8  取代率r与碳纤维再生混凝土剪切强度τ的关系

    Figure  8.  Relationship between r and τ of carbon fiber recycled aggregate concrete

    图  9  取代率r与碳纤维再生混凝土峰值位移s的关系

    Figure  9.  Relationship between r and s of carbon fiber recycled aggregate concrete

    图  10  参数A与再生粗骨料取代率的关系

    Figure  10.  Relationship between parameter A and r of RCA

    图  11  碳纤维掺量Vf与碳纤维再生混凝土损伤变量D的关系

    Figure  11.  Relationship between Vf and damage variable D of carbon fiber recycled aggregate concrete

    图  12  压应力比 k与碳纤维再生混凝土损伤变量D的关系

    Figure  12.  Relationship between k and D of carbon fiber recycled aggregate concrete

    图  13  取代率r与碳纤维再生混凝土损伤变量D的关系

    Figure  13.  Relationship between r and D of carbon fiber recycled aggregate concrete

    图  14  碳纤维再生混凝土理论曲线与试验曲线对比

    Figure  14.  Comparison between theoretical curve and experimental curve of carbon fiber recycled aggregate concrete

    表  1  粗骨料基本物理性质

    Table  1.   Basic physical properties of coarse aggregate

    Coarse
    aggregate
    Water content
    (By mass)/%
    Water absorption
    (By mass)/%
    Apparent density/
    (kg·m−3)
    Stacking density/
    (kg·m−3)
    Crushing
    indicator/%
    NCA0.0980.3092714141219.89
    RCA0.7151.6802579127422.80
    Notes: NCA—Natural coarse aggregate; RCA—Recycled coarse aggregate.
    下载: 导出CSV

    表  2  碳纤维基本物理性质

    Table  2.   Basic physical properties of carbon fiber

    SampleDensity/(g·mm−3)Diameter/mmLength/mmElongation at break/%Elastic modulus/GPa
    Carbon fiber1.760.07152205
    下载: 导出CSV

    表  3  再生混凝土(RAC)配合比

    Table  3.   Mix proportion of recycled aggregate concrete (RAC)

    Specimenr/%Water-cement ratioSand ratio/%Mix proportion/(kg·m−3)
    CSRCANCAW
    0vol%CF/RAC(0%)00.434749854111530215.00
    0vol%CF/RAC(30%)300.4547498541807346222.95
    0vol%CF/RAC(50%)500.4647498541577577227.87
    0vol%CF/RAC(70%)700.4747498541346807232.79
    0vol%CF/RAC(100%)1000.484749854101153240.00
    Notes: C—Cement; S—Sand; W—Water; r—Replacement rate of recycled aggregate concrete; CF—Carbon fiber.
    下载: 导出CSV

    表  4  碳纤维再生混凝土特征点参数

    Table  4.   Feature point parameters of carbon fiber recycled aggregate concrete

    Specimenτ/MPas/mmSpecimen

    τ/MPas/mm
    τ1τ2τ3τ1τ2τ3
    0.3vol%CF/RAC(0%)-0 5.40 4.78 4.84 0.91 0vol%CF/RAC(100%)-0 3.83 3.91 0.74
    0.3vol%CF/RAC(0%)-0.09 11.29 11.94 11.07 1.35 0.5vol%CF/RAC(100%)-0 4.22 5.18 5.06 0.85
    0.3vol%CF/RAC(0%)-0.18 14.41 16.50 17.27 1.35 0vol%CF/RAC(0%)-0 4.72 4.17 3.98 0.60
    0.3vol%CF/RAC(30%)-0 4.97 5.25 4.94 1.01 0vol%CF/RAC(0%)-0.09 10.04 9.31 11.00 1.04
    0.3vol%CF/RAC(30%)-0.09 11.29 11.52 11.87 1.42 0vol%CF/RAC(0%)-0.18 14.72 14.72 14.02 0.79
    0.3vol%CF/RAC(30%)-0.18 16.36 15.91 16.79 1.46 0vol%CF/RAC(30%)-0 4.01 3.71 3.62 0.72
    0.3vol%CF/RAC(50%)-0 4.76 4.48 4.68 0.84 0vol%CF/RAC(30%)-0.09 9.40 9.42 10.37 0.85
    0.3vol%CF/RAC(50%)-0.09 10.71 10.47 10.17 0.91 0vol%CF/RAC(30%)-0.18 12.66 13.89 12.12 1.12
    0.3vol%CF/RAC(50%)-0.18 14.47 13.89 15.64 1.34 0vol%CF/RAC(50%)-0 3.78 4.70 3.41 0.60
    0.3vol%CF/RAC(70%)-0 4.78 5.24 5.21 1.23 0vol%CF/RAC(50%)-0.09 9.72 9.51 9.57 0.89
    0.3vol%CF/RAC(70%)-0.09 10.21 11.62 11.55 1.36 0vol%CF/RAC(50%)-0.18 13.78 13.80 14.05 1.04
    0.3vol%CF/RAC(70%)-0.18 16.38 16.01 14.98 1.28 0vol%CF/RAC(70%)-0 4.54 3.77 3.97 0.65
    0.3vol%CF/RAC(100%)-0 4.06 4.52 4.44 0.83 0vol%CF/RAC(70%)-0.09 8.74 8.03 9.97 0.72
    0.3vol%CF/RAC(100%)-0.09 12.19 12.06 11.31 1.70 0vol%CF/RAC(70%)-0.18 13.17 13.30 12.97 0.95
    0.3vol%CF/RAC(100%)-0.18 15.22 16.27 15.22 1.89 0vol%CF/RAC(100%)-0 4.29 3.77 3.13 0.59
    0vol%CF/RAC(0%)-0 4.30 4.29 5.01 0.83 0vol%CF/RAC(100%)-0.09 8.36 9.90 12.34 0.78
    0.5vol%CF/RAC(0%)-0 5.84 5.57 5.50 0.36 0vol%CF/RAC(100%)-0.18 13.92 11.82 13.67 1.54
    Notes: τ—Shear strength; s—Peak shear displacement; τ1, τ2, τ3—Shear strength of three specimens in the specimen group; The first number of specimen number represents the replacement rate of recycled coarse aggregate, the second number represents the fiber content, and the third number is the compressive stress ratio. For example, 0.3%CF/RAC(100%)-0.09 represents specimens with a recycled coarse aggregate replacement rate of 100%, fiber content of 0.3%, and compressive stress ratio of 0.09.
    下载: 导出CSV
  • [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,2019,229:116935. doi: 10.1016/j.conbuildmat.2019.116935
    [2] WASEEM S A, SINGH B. An experimental study on shear capacity of interfaces in recycled aggregate concrete[J]. Structural Concrete,2018,19(1):1-2. doi: 10.1002/suco.201870015
    [3] XIAO J Z, XIAO Y, LIU Y, et al. Carbon emission analyses of concretes made with recycled materials considering CO2 uptake through carbonation absorption[J]. Structural Concrete,2021,22(S1):E58-E73. doi: 10.1002/suco.201900577
    [4] SUN C, LANGE D A, XIAO J, et al. Contact behavior between cracked surfaces of recycled aggregate concrete[J]. Construction and Building Materials,2017,155:1168-1178. doi: 10.1016/j.conbuildmat.2017.08.125
    [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,2022,49:104048. doi: 10.1016/j.jobe.2022.104048
    [6] WANG R, ZHANG Y X. Recycling fresh concrete waste: A review[J]. Structural Concrete,2018,19(6):1939-1955. doi: 10.1002/suco.201800057
    [7] EL-HAWARY M, AL-SULILY A. Internal curing of recycled aggregates concrete[J]. Journal of Cleaner Production,2020,275:122911. doi: 10.1016/j.jclepro.2020.122911
    [8] 高丹盈, 景嘉骅, 周潇. 混杂纤维增强再生砖骨料混凝土增强机制与抗压性能计算方法[J]. 复合材料学报, 2018, 35(12):3441-3449. doi: 10.13801/j.cnki.fhclxb.20180516.003

    GAO Danying, JING Jiahua, ZHOU Xiao. Reinforcing mechanism and calculation method of compressive behavior of hybrid fiber reinforced recycled brick aggregates concrete[J]. Acta Materiae Compositae Sinica,2018,35(12):3441-3449(in Chinese). doi: 10.13801/j.cnki.fhclxb.20180516.003
    [9] 陈宇良, 李浩, 叶培欢, 等. 循环荷载作用下钢纤维再生混凝土力学性能试验[J]. 复合材料学报, 2018, 39(11):5574-5585. doi: 10.13801/j.cnki.fhclxb.20220310.002

    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,2018,39(11):5574-5585(in Chinese). doi: 10.13801/j.cnki.fhclxb.20220310.002
    [10] 丁亚红, 郭书奇, 张向冈, 等. 玄武岩纤维对再生混凝土抗碳化性能的影响[J]. 复合材料学报, 2022, 39(3):1228-1238.

    DING Yahong, GUO Shuqi, ZHANG Xianggang, et al. Influence of basalt fiber on the anti-carbonation performance of recycled aggregate concrete[J]. Acta Materiae Compositae Sinica,2022,39(3):1228-1238(in Chinese).
    [11] AHMADI M, FARZIN S, HASSANI A, et al. Mechanical properties of the concrete containing recycled fibers and aggregates[J]. Construction and Building Materials,2017,144:392-398. doi: 10.1016/j.conbuildmat.2017.03.215
    [12] GRZYMSKI F, MUSIAŁ M, TRAPKO T. Mechanical properties of fibre reinforced concrete with recycled fibres[J]. Construction and Building Materials,2019,198:323-331. doi: 10.1016/j.conbuildmat.2018.11.183
    [13] LIU B, GENG S Y, LI Z, et al. Experimental and modeling research on compression-shear behavior of carbon fiber reinforced coral concrete[J]. Construction and Building Materials,2021,301:124347.
    [14] 王作虎, 杨菊, 崔宇强, 等. 碳纤维增强树脂复合材料加固钢筋混凝土柱抗震性能的尺寸效应试验[J]. 复合材料学报, 2020, 37(10):2645-2655. doi: 10.13801/j.cnki.fhclxb.20200212.001

    WANG Zuohu, YANG Ju, CUI Yuqiang, et al. Experiment on the size effect of seismic behavior for reinforced concrete columns strengthened by carbon fiber reinforced plastics[J]. Acta Materiae Compositae Sinica,2020,37(10):2645-2655(in Chinese). doi: 10.13801/j.cnki.fhclxb.20200212.001
    [15] GUO Z, ZHUANG Z, LI Z, et al. Mechanical properties of carbon fiber reinforced concrete (CFRC) after exposure to high temperatures[J]. Composite Structures,2021,256(2):113072.
    [16] WANG Z, MA G, MA Z, et al. Flexural behavior of carbon fiber-reinforced concrete beams under impact loading[J]. Cement and Concrete Composites,2021,118:103910. doi: 10.1016/j.cemconcomp.2020.103910
    [17] LIANG J F, LIN S Q, AHMED M. Axial behavior of carbon fiber-reinforced polymer-confined recycled aggregate concrete-filled steel tube slender square columns[J]. Advances in Structural Engineering,2021,24(15):3507-3518. doi: 10.1177/13694332211033964
    [18] 肖洋, 彭刚, 黄超, 等. 压剪共同作用下混凝土的损伤演化研究[J]. 水利水运工程学报, 2018(2):112-119.

    XIAO Yang, PENG Gang, HUANG Chao, et al. Damage evolution study of concrete under joint action of compression and shear[J]. Hydro-Science and Engineering,2018(2):112-119(in Chinese).
    [19] YU Z P, HUANG Q, XIE X H, et al. Experimental study and failure criterion analysis of plain concrete under combined compression-shear stress[J]. Construction and Building Materials,2018,179:198-206. doi: 10.1016/j.conbuildmat.2018.05.242
    [20] 邓志恒, 李作华, 杨海峰, 等. 再生混凝土压-剪复合受力性能研究[J]. 建筑结构学报, 2019, 40(5):174-180. doi: 10.14006/j.jzjgxb.2019.05.018

    DENG Zhiheng, LI Zuohua, YANG Haifeng, et al. Mechanic behavior of recycled aggregate concrete subjected to compression-shear loading[J]. Journal of Building Structures,2019,40(5):174-180(in Chinese). doi: 10.14006/j.jzjgxb.2019.05.018
    [21] WANG Y M, DENG Z H, XIAO J H, et al. Mechanical properties of recycled aggregate concrete under compression-shear stress state[J]. Construction and Building Materials,2021,271:121894. doi: 10.1016/j.conbuildmat.2020.121894
    [22] WASEEM S A, SINGH B. Shear transfer strength of normal and high-strength recycled aggregate concrete—An experimental investigation[J]. Construction & Building Materials,2016,125:29-40.
    [23] 张丽娟, 高丹盈, 王丽, 等. 钢纤维再生混凝土抗剪性能试验[J]. 土木工程与管理学报, 2017, 34(2):104-107. doi: 10.3969/j.issn.2095-0985.2017.02.024

    ZHANG Lijuan, GAO Danying, WANG Li, et al. Experiments on shear behavior of steel fiber recycled concrete[J]. Journal of Civil Engineering and Management,2017,34(2):104-107(in Chinese). doi: 10.3969/j.issn.2095-0985.2017.02.024
    [24] 陈宇良, 姜锐, 陈宗平, 等. 复合受剪钢纤维再生混凝土破坏机理及强度计算[J]. 工程力学, 2023, 40(3):88-97, 128. doi: 10.6052/j.issn.1000-4750.2020.10.0716

    CHEN Yuliang, JIANG Rui, CHEN Zongping, et al. Failure mechanism and strength calculation of composite shear steel fiber recycled concrete[J]. Engineering Mechanics,2023,40(3):88-97, 128(in Chinese). doi: 10.6052/j.issn.1000-4750.2020.10.0716
    [25] 中国国家标准化管理委员会. 混凝土用再生粗骨料: GB/T 25177—2010[S]. 北京: 中国建筑工业出版社, 2010.

    Standardization Administration of the People's Republic of China. Recycled coarse aggregate for concrete: GB/T 25177—2010[S]. Beijing: China Architecture and Building Press, 2010(in Chinese).
    [26] 中国工程建设标准化协会. 纤维混凝土试验方法标准: CECS 13: 2009[S]. 北京: 中国计划出版社, 2009.

    China Association for Engineering Construction Standardization. Standard test methods for fiber reinforced concrete: CECS 13: 2009[S]. Beijing: China Plans Publishing House, 2009(in Chinese).
  • 加载中
图(14) / 表(4)
计量
  • 文章访问数:  609
  • HTML全文浏览量:  291
  • PDF下载量:  23
  • 被引次数: 0
出版历程
  • 收稿日期:  2022-08-08
  • 修回日期:  2022-09-12
  • 录用日期:  2022-09-27
  • 网络出版日期:  2022-10-11
  • 刊出日期:  2023-07-15

目录

    /

    返回文章
    返回