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玄武岩纤维增强泡沫混凝土的单轴拉伸及准静态压缩性能

王小娟 崔浩儒 周宏元 李秀杰

王小娟, 崔浩儒, 周宏元, 等. 玄武岩纤维增强泡沫混凝土的单轴拉伸及准静态压缩性能[J]. 复合材料学报, 2022, 40(0): 1-17
引用本文: 王小娟, 崔浩儒, 周宏元, 等. 玄武岩纤维增强泡沫混凝土的单轴拉伸及准静态压缩性能[J]. 复合材料学报, 2022, 40(0): 1-17
Xiaojuan WANG, Haoru CUI, Hongyuan ZHOU, Xiujie LI. Mechanical performance of basalt fiber reinforced foam concrete subjected to quasi-static tensile and compressive tests[J]. Acta Materiae Compositae Sinica.
Citation: Xiaojuan WANG, Haoru CUI, Hongyuan ZHOU, Xiujie LI. Mechanical performance of basalt fiber reinforced foam concrete subjected to quasi-static tensile and compressive tests[J]. Acta Materiae Compositae Sinica.

玄武岩纤维增强泡沫混凝土的单轴拉伸及准静态压缩性能

基金项目: 国家重点研发计划(2019 YFD1101005); 国家自然科学基金(52178096;51808017;51778028);
详细信息
    通讯作者:

    周宏元,博士,教授,博士生导师,研究方向为吸能材料、结构防护、结构抗爆设计 E-mail:hzhou@bjut.edu.cn

  • 中图分类号: TB301,TB332

Mechanical performance of basalt fiber reinforced foam concrete subjected to quasi-static tensile and compressive tests

  • 摘要: 为研究玄武岩纤维增强泡沫混凝土的力学性能,共设计了52组试件,讨论了玄武岩纤维体积掺量和纤维长度对各密度试件的拉伸和压缩性能的影响。结果表明:玄武岩纤维可显著提高试件的抗拉峰值应力(最大提升达到737%)和峰值应变(最大提升达到833%),可有效改善中高密度试件的受拉失效模式,使其出现伪应变硬化现象,提升了试件的抗拉承载能力和变形能力。试件抗拉峰值应力和峰值应变随纤维体积掺量增大而增大,随纤维长度增长先增大后降低;另一方面,玄武岩纤维能改变试件的受压破坏模式,使其从纵向劈裂破坏转变为斜向剪切破坏和横向压溃破坏,显著提高了中低密度试件的抗压承载力和吸能能力(最大提升达到328%)。试件的吸能能力随纤维体积掺量增大而增强,随纤维长度增长先提升后降低。

     

  • 图  1  玄武岩纤维

    Figure  1.  Basalt fiber

    图  2  发泡设备

    Figure  2.  Foaming machine

    图  3  试验设备、试件及加载装置

    Figure  3.  Test instrument, specimen and loading device

    图  4  玄武岩纤维泡沫混凝土拉伸破坏模式

    Figure  4.  Tensile failure mode of basalt fiber reinforced foam concrete

    图  5  不同密度泡沫混凝土单轴拉伸名义应力-名义变曲线

    Figure  5.  Nominal stress-nominal strain curves of foam concrete with different densities subjected to uniaxial tension

    图  6  48组玄武岩纤维增强泡沫混凝土单轴拉伸名义应力-名义应变曲线

    Figure  6.  Nominal stress-nominal strain curves of 48 sets of basalt fiber reinforced foam concrete subjected to uniaxial tension

    图  7  玄武岩纤维掺量对玄武岩纤维泡沫混凝土拉伸峰值应力的影响

    Figure  7.  Effect of basalt fiber volume fraction on peak stress of basalt fiber reinforced foam concrete under tension

    图  8  玄武岩纤维长度对玄武岩纤维泡沫混凝土拉伸峰值应力的影响

    Figure  8.  Effect of length of basalt fiber on peak stress of basalt fiber reinforced foam concrete under tension

    图  9  15 mm玄武岩纤维成团示意图

    Figure  9.  Schematic of gathering of basalt fiber with length of 15 mm

    图  10  玄武岩纤维泡沫混凝土纤维SEM图像

    Figure  10.  SEM images of fiber in basalt fiber reinforced foam concrete

    图  11  玄武岩纤维泡沫混凝土压溃模式

    Figure  11.  Failure pattern of basalt fiber reinforced foam concrete

    图  12  纤维长度为12 mm的玄武岩纤维泡沫混凝土裂缝开展模式

    Figure  12.  Crack development of basalt fiber reinforced foam concrete with fiber length of 12 mm

    图  13  玄武岩纤维泡沫混凝土试件压溃情况对比

    Figure  13.  Comparison of collapse modes of basalt fiber reinforced foam concrete specimens

    图  14  玄武岩纤维掺量对玄武岩纤维泡沫混凝土吸能的影响

    Figure  14.  Effect of basalt fiber volume fraction on energy absorption of basalt fiber reinforced foam concrete specimen

    15  玄武岩纤维长度对玄武岩纤维泡沫混凝土吸能的影响

    15.  Effect of length of on energy absorption of basalt fiber reinforced foam concrete specimen

    图  16  纤维长度为12 mm的玄武岩纤维泡沫混凝土名义应力-应变曲线

    Figure  16.  Nominal stress-strain curves of basalt fiber reinforced foam concrete with fiber length of 12 mm

    表  1  水泥基本参数

    Table  1.   Basic parameters of cement

    CementSpecific surface area/(m2·kg−1)Setting
    time/min
    Flexural
    strength/MPa
    Compressive strength/MPa
    InitialFinal3 d28 d3 d28 d
    P.O 42.53407027068.53548
    下载: 导出CSV

    表  2  玄武岩纤维的主要性能指标

    Table  2.   Main properties of basalt fiber

    Diameter/μmTensile strength/MPaElastic modulus/GPaElongation/%Density/(kg·m-3)
    134150~475095~1153.12650
    下载: 导出CSV

    表  3  玄武岩纤维增强泡沫混凝土配合比

    Table  3.   Mix proportion of basalt fiber reinforced foam concrete

    Target density of foam concrete/
    (kg·m−3)
    Mix properties
    Cement/
    (kg·m−3)
    Water/
    (kg·m−3)
    Foam/
    (kg·m−3)
    Length of
    fiber/mm
    Fiber volume
    fraction/vol%
    Weight of fiber
    /(kg·m−3)
    400230.98115.4956.560/6/12/150/0.15/0.3/0.450/3.98/7.96/11.94
    700439.22219.6144.380/6/12/150/0.15/0.3/0.450/3.98/7.96/11.94
    1000647.45323.7332.270/6/12/150/0.15/0.3/0.450/3.98/7.96/11.94
    1300855.67427.8420.090/6/12/150/0.15/0.3/0.450/3.98/7.96/11.94
    下载: 导出CSV

    表  4  玄武岩纤维泡沫混凝土试件汇总

    Table  4.   Summary of basalt fiber reinforced foam concrete specimens

    Tensile specimenCompressive specimen
    FC-424FC-439
    0.15 vol%BF(6)/FC-4140.15 vol%BF(6)/FC-438
    0.30 vol%BF(6)/FC-4260.30 vol%BF(6)/FC-440
    0.45 vol%BF(6)/FC-4050.45 vol%BF(6)/FC-428
    0.15 vol%BF(9)/FC-4110.15 vol%BF(9)/FC-444
    0.30 vol%BF(9)/FC-4320.30 vol%BF(9)/FC-440
    0.45 vol%BF(9)/FC-4190.45 vol%BF(9)/FC-423
    0.15 vol%BF(12)/FC-4160.15 vol%BF(12)/FC-439
    0.30 vol%BF(12)/FC-4050.30 vol%BF(12)/FC-429
    0.45 vol%BF(12)/FC-4240.45 vol%BF(12)/FC-442
    0.15 vol%BF(15)/FC-4350.15 vol%BF(15)/FC-419
    0.30 vol%BF(15)/FC-4190.30 vol%BF(15)/FC-415
    0.45 vol%BF(15)/FC-4070.45 vol%BF(15)/FC-404
    FC-713FC-710
    0.15 vol%BF(6)/FC-7210.15 vol%BF(6)/FC-736
    0.30 vol%BF(6)/FC-7260.30 vol%BF(6)/FC-713
    0.45 vol%BF(6)/FC-7140.45 vol%BF(6)/FC-730
    0.15 vol%BF(9)/FC-7080.15 vol%BF(9)/FC-740
    0.30 vol%BF(9)/FC-7190.30 vol%BF(9)/FC-702
    0.45 vol%BF(9)/FC-7320.45 vol%BF(9)/FC-720
    0.15 vol%BF(12)/FC-7260.15 vol%BF(12)/FC-725
    0.30 vol%BF(12)/FC-7320.30 vol%BF(12)/FC-704
    0.45 vol%BF(12)/FC-7340.45 vol%BF(12)/FC-711
    0.15 vol%BF(15)/FC-7150.15 vol%BF(15)/FC-715
    0.30 vol%BF(15)/FC-7110.30 vol%BF(15)/FC-725
    0.45 vol%BF(15)/FC-7030.45 vol%BF(15)/FC-696
    FC-1032FC-1025
    0.15 vol%BF(6)/FC-10240.15 vol%BF(6)/FC-1026
    0.30 vol%BF(6)/FC-10170.30 vol%BF(6)/FC-1044
    0.45 vol%BF(6)/FC-10090.45 vol%BF(6)/FC-1016
    0.15 vol%BF(9)/FC-10030.15 vol%BF(9)/FC-1011
    0.30 vol%BF(9)/FC-10130.30 vol%BF(9)/FC-1003
    0.45 vol%BF(9)/FC-10260.45 vol%BF(9)/FC-992
    0.15 vol%BF(12)/FC-10110.15 vol%BF(12)/FC-997
    0.30 vol%BF(12)/FC-10070.30 vol%BF(12)/FC-997
    0.45 vol%BF(12)/FC-10230.45 vol%BF(12)/FC-1016
    0.15 vol%BF(15)/FC-10340.15 vol%BF(15)/FC-1001
    0.30 vol%BF(15)/FC-10100.30 vol%BF(15)/FC-1000
    0.45 vol%BF(15)/FC-10320.45 vol%BF(15)/FC-1041
    FC-1305FC-1322
    0.15 vol%BF(6)/FC-13170.15 vol%BF(6)/FC-1331
    0.30 vol%BF(6)/FC-13330.30 vol%BF(6)/FC-1332
    0.45 vol%BF(6)/FC-13190.45 vol%BF(6)/FC-1308
    0.15 vol%BF(9)/FC-13260.15 vol%BF(9)/FC-1320
    0.30 vol%BF(9)/FC-13220.30 vol%BF(9)/FC-1326
    0.45 vol%BF(9)/FC-13070.45 vol%BF(9)/FC-1293
    0.15 vol%BF(12)/FC-13110.15 vol%BF(12)/FC-1307
    0.30 vol%BF(12)/FC-13040.30 vol%BF(12)/FC-1308
    0.45 vol%BF(12)/FC-13370.45 vol%BF(12)/FC-1306
    0.15 vol%BF(15)/FC-13280.15 vol%BF(15)/FC-1302
    0.30 vol%BF(15)/FC-13210.30 vol%BF(15)/FC-1310
    0.45 vol%BF(15)/FC-13170.45 vol%BF(15)/FC-1296
    Notes: the letters BF and FC stand for the basalt fiber and the foam concrete, while the sequential three number indicate the volume fraction of the fiber, the length of the fiber, and the density of the specimen, respectively.
    下载: 导出CSV

    表  5  玄武岩纤维泡沫混凝土单轴拉伸试件的特征点

    Table  5.   Characteristics of basalt fiber reinforced foam concrete specimen subjected to uniaxial tension

    Specimen indexPeak stress/MPa and
    Improvement rate/%
    Peak strain and Improvement rate/%FM
    FC-4240.019-0.012-
    0.15 vol%BF(6)/FC-4140.033740.049308
    0.30 vol%BF(6)/FC-4260.033740.037208
    0.45 vol%BF(6)/FC-4050.036900.048300
    0.15 vol%BF(9)/FC-4110.0652420.039225
    0.30 vol%BF(9)/FC-4320.0773050.047292
    0.45 vol%BF(9)/FC-4190.1044470.059392
    0.15 vol%BF(12)/FC-4160.0873580.05317
    0.30 vol%BF(12)/FC-4050.135840.08567
    0.45 vol%BF(12)/FC-4240.1597370.112833
    0.15 vol%BF(15)/FC-4350.0984160.046283
    0.30 vol%BF(15)/FC-4190.1215370.059392
    0.45 vol%BF(15)/FC-4070.0994210.047292
    FC-7130.058-0.032-
    0.15 vol%BF(6)/FC-7210.079370.03510
    0.30 vol%BF(6)/FC-7260.1221100.05469
    0.45 vol%BF(6)/FC-7140.1461520.07119
    0.15 vol%BF(9)/FC-7080.1341310.067109
    0.30 vol%BF(9)/FC-7190.1962380.098206
    0.45 vol%BF(9)/FC-7320.2242860.101216
    0.15 vol%BF(12)/FC-7260.1511600.072125
    0.30 vol%BF(12)/FC-7320.1962380.092188
    0.45 vol%BF(12)/FC-7340.3084310.175447
    0.15 vol%BF(15)/FC-7150.1251160.072125
    0.30 vol%BF(15)/FC-7110.1962380.095198
    0.45 vol%BF(15)/FC-7030.2503310.145353
    FC-10320.105-0.058-
    0.15 vol%BF(6)/FC-10240.187780.12107
    0.30 vol%BF(6)/FC-10170.2591470.141143
    0.45 vol%BF(6)/FC-10090.3021880.177205
    0.15 vol%BF(9)/FC-10030.2421310.159174
    0.30 vol%BF(9)/FC-10130.2611490.203250
    0.45 vol%BF(9)/FC-10260.3081930.275374
    0.15 vol%BF(12)/FC-10110.2881740.208259
    0.30 vol%BF(12)/FC-10070.3252100.2245
    0.45 vol%BF(12)/FC-10230.4263060.247326
    0.15 vol%BF(15)/FC-10340.165570.08241
    0.30 vol%BF(15)/FC-10100.2811680.144148
    0.45 vol%BF(15)/FC-10320.3461370.184217
    FC-13050.183-0.088-
    0.15 vol%BF(6)/FC-13170.224220.11531
    0.30 vol%BF(6)/FC-13330.234280.10317
    0.45 vol%BF(6)/FC-13190.326780.15880
    0.15 vol%BF(9)/FC-13260.239310.13351
    0.30 vol%BF(9)/FC-13220.251370.13553
    0.45 vol%BF(9)/FC-13070.280530.17397
    0.15 vol%BF(12)/FC-13110.216180.11227
    0.30 vol%BF(12)/FC-13040.297620.16790
    0.45 vol%BF(12)/FC-13370.4061220.314257
    0.15 vol%BF(15)/FC-13280.208140.12138
    0.30 vol%BF(15)/FC-13210.311700.193119
    0.45 vol%BF(15)/FC-13170.3731040.221151
    Note: the letters FM stand for the failure mode.
    下载: 导出CSV

    表  6  玄武岩纤维泡沫混凝土准静态压缩能量吸收指标

    Table  6.   Energy absorption characteristics of basalt fiber foam reinforced concrete under quasi-static compression

    Specimen indexPeak and plateau stress/MPa${\varepsilon _{\text{D}}}$${E_{\text{a}}}$/J and ${E_{{\text{SA}}}}$/(J·g-1)
    FC-4390.525/0.4110.47190.0/0.433
    0.15 vol%BF(6)/FC-4380.995/0.6960.42309.5/0.707
    0.30 vol%BF(6)/FC-4401.259/0.6360.43311.2/0.707
    0.45 vol%BF(6)/FC-4281.589/1.0500.51532.9/1.245
    0.15 vol%BF(9)/FC-4441.246/0.7240.52407.1/0.917
    0.30 vol%BF(9)/FC-4401.229/0.8810.52448.7/1.020
    0.45 vol%BF(9)/FC-4231.772/1.2500.43576.2/1.362
    0.15 vol%BF(12)/FC-4391.254/0.9230.52468.0/1.066
    0.30 vol%BF(12)/FC-4291.755/1.4270.57789.4/1.840
    0.45 vol%BF(12)/FC-4421.910/1.5700.56813.1/1.840
    0.15 vol%BF(15)/FC-4191.390/0.7840.53441.2/1.053
    0.30 vol%BF(15)/FC-4151.696/1.3990.51692.0/1.668
    0.45 vol%BF(15)/FC-4041.443/0.8460.59490.2/1.213
    FC-7104.561/1.4590.33614.8/0.866
    0.15 vol%BF(6)/FC-7364.220/1.4300.53831.6/1.130
    0.30 vol%BF(6)/FC-7134.137/1.8480.39857.7/1.203
    0.45 vol%BF(6)/FC-7304.470/1.3860.57916.7/1.256
    0.15 vol%BF(9)/FC-7405.072/1.7180.44955.6/1.291
    0.30 vol%BF(9)/FC-7023.553/2.6360.491258.0/1.792
    0.45 vol%BF(9)/FC-7205.070/3.2490.441423.4/1.977
    0.15 vol%BF(12)/FC-7255.723/2.4400.451118.3/1.542
    0.30 vol%BF(12)/FC-7044.063/2.9940.521534.3/2.179
    0.45 vol%BF(12)/FC-7114.305/3.4130.501566.7/2.204
    0.15 vol%BF(15)/FC-7155.250/2.3380.37985.8/1.379
    0.30 vol%BF(15)/FC-7254.648/3.2920.471516.5/2.092
    0.45 vol%BF(15)/FC-6965.064/2.7190.491313.5/1.887
    FC-10259.459/3.7600.361587.9/1.549
    0.15 vol%BF(6)/FC-102611.707/3.7580.462086.0/2.033
    0.30 vol%BF(6)/FC-104413.488/4.3270.492365.9/2.266
    0.45 vol%BF(6)/FC-101612.417/5.0470.482558.2/2.518
    0.15 vol%BF(9)/FC-101111.565/4.9330.372096.2/2.073
    0.30 vol%BF(9)/FC-100312.319/5.5360.472580.7/2.573
    0.45 vol%BF(9)/FC-99211.471/6.7390.513193.3/3.219
    0.15 vol%BF(12)/FC-9978.913/5.0170.522716.4/2.725
    0.30 vol%BF(12)/FC-99712.503/6.9590.553374.7/3.385
    0.45 vol%BF(12)/FC-101614.011/8.5290.503739.2/3.680
    0.15 vol%BF(15)/FC-10019.984/4.9690.512536.6/2.534
    0.30 vol%BF(15)/FC-100011.940/5.3900.532981.3/2.981
    0.45 vol%BF(15)/FC-104112.538/6.9110.513430.7/3.296
    FC-132223.601/4.5470.382351.2/1.779
    0.15 vol%BF(6)/FC-133124.556/5.9200.372646.3/1.988
    0.30 vol%BF(6)/FC-133223.282/5.9900.433180.0/2.377
    0.45 vol%BF(6)/FC-130820.178/8.6690.494136.7/3.163
    0.15 vol%BF(9)/FC-132023.643/6.1240.372759.1/2.090
    0.30 vol%BF(9)/FC-132624.580/6.5020.503776.5/2.848
    0.45 vol%BF(9)/FC-129325.920/9.0830.474189.5/3.240
    0.15 vol%BF(12)/FC-130721.120/7.1360.443452.7/2.642
    0.30 vol%BF(12)/FC-130820.126/10.7080.505135.4/3.926
    0.45 vol%BF(12)/FC-130622.800/12.1940.566433.7/4.926
    0.15 vol%BF(15)/FC-130224.311/5.3970.392816.0/2.163
    0.30 vol%BF(15)/FC-131023.903/11.0510.525432.6/4.147
    0.45 vol%BF(15)/FC-129620.191/9.7940.524884.6/3.769
    Notes:${\varepsilon _{\text{D}}}$represents densification strain while${E_{\text{a}}}$and ${E_{{\text{SA}}}}$denote energy absorption and specific energy absorption.
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-03-02
  • 录用日期:  2022-04-12
  • 修回日期:  2022-04-12
  • 网络出版日期:  2022-04-30

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