玄武岩纤维泡沫混凝土的细观结构及损伤特性

周程涛; 陈波; 张娟; 李松

玄武岩纤维泡沫混凝土的细观结构及损伤特性

周程涛^{1, 2},
陈波^{1, 2, ,},
张娟³,
李松^{1, 2}

1.
河海大学　水利水电学院, 南京 210098
2.
河海大学　水灾害防御全国重点实验室, 南京 210098
3.
江苏省水利勘测设计研究院有限公司, 扬州 225009

基金项目: 国家自然科学基金面上项目(52079049)；国家重点实验室基本科研业务费(522012272；5230248 A2)

详细信息

通讯作者:
陈波，博士，教授，博士生导师，研究方向为水工混凝土新材料　E-mail: chenbo@hhu.edu.cn

中图分类号: TU528.2
计量
- 文章访问数: 209
- HTML全文浏览量: 128
- 被引次数: 0
出版历程
- 收稿日期: 2023-09-27
- 修回日期: 2023-10-20
- 录用日期: 2023-11-02
- 网络出版日期: 2023-11-23

Microstructure and damage characteristics of basalt fiber reinforced foam concrete

ZHOU Chengtao^{1, 2},
CHEN Bo^{1, 2
, ,},
ZHANG Juan³,
LI Song^{1, 2}

1.
College of Water-conservancy and Hydropower, Hohai University, Nanjing 210098, China
2.
State Key Laboratory of Water Disaster Prevention, Hohai University, Nanjing 210098, China
3.
Jiangsu Surveying and Design Institute of Water Resources Co. Ltd., Yangzhou 225009, China

Funds: The General Program of National Natural Science Foundation of China (52079049); Basic Scientific Research Business Expenses of National Key Laboratories (522012272; 5230248 A2)

摘要

摘要: 为了研究玄武岩纤维增强泡沫混凝土的细观结构特征和不同纤维掺量对其损伤特性的影响，本文对密度等级1000 kg/cm³的玄武岩纤维增强泡沫混凝土开展了X-CT试验及单轴压缩-声发射联合试验，基于Avizo图像处理以及声发射$ {b}_{\mathrm{i}} $值(改进版b值)等参数分析了纤维及孔隙的细观结构特征以及材料损伤演化特性。结果表明：掺入玄武岩纤维可有效改善泡沫混凝土力学性能，掺入0.5vol%、1.5vol%、2.5vol%纤维后试件平均抗压强度分别提升了1.37 MPa、4.58 MPa、2.77 MPa；2.5vol%掺量的试件中纤维分形维数主要在1.0~1.3，纤维团聚明显，纤维角度集中，试件性能较1.5vol%掺量有所降低；掺入玄武岩纤维后试件声发射$ {b}_{\mathrm{i}} $值趋势更为平缓，玄武岩纤维可有效抑制裂纹发育。
- 玄武岩纤维泡沫混凝土 /
- 细观结构 /
- 声发射 /
- 损伤特性 /
- 单轴压缩 /
- b_i值
Abstract: In order to study the microstructure characteristics of basalt fiber reinforced foam concrete and the influence of different fiber content on its damage characteristics, this paper carried out X-CT test and uniaxial compression acoustic emission joint test on basalt fiber reinforced foam concrete with density grade of 1000kg/cm³. Based on Avizo image processing and acoustic emission basic parameters and $ {b}_{\mathrm{i}} $ values (Improved b value), the microstructure characteristics of fibers and pores and the damage evolution characteristics of materials were analyzed. The results show that the addition of basalt fiber can effectively improve the mechanical properties of foam concrete. The average compressive strength of the specimens with 0.5vol%, 1.5vol% and 2.5vol% fibers increase by 1.37 MPa, 4.58 MPa and 2.77 MPa, respectively. The fiber fractal dimension of the specimen with 2.5vol% content is mainly in the range of 1.0-1.3, the fiber agglomeration is obvious, the fiber angle is concentrated, and the performance of the specimen is reduced. After adding basalt fiber, the trend of acoustic emission $ {b}_{\mathrm{i}} $ value of the specimen is gentler, and basalt fiber can effectively inhibit crack development.
- basalt fiber reinforced foam concrete /
- microstructure /
- acoustic emission /
- damage characteristics /
- uniaxial compression /
- b_i value

HTML全文

图 1 玄武岩纤维

Figure 1. Basalt fiber

下载: 全尺寸图片幻灯片

图 2 玄武岩纤维增强泡沫混凝土X-CT图像分析示意图

Figure 2. X-CT image analysis diagram of basalt fiber reinforced foam concrete

下载: 全尺寸图片幻灯片

图 3 泡沫混凝土中玄武岩纤维三维分布图

Figure 3. Three-dimensional distribution of basalt fiber in foam concrete

下载: 全尺寸图片幻灯片

图 4 玄武岩纤维三向均匀性分析图

Figure 4. Three-dimensional uniformity analysis diagram of basalt fiber

下载: 全尺寸图片幻灯片

图 5 空间方位角和极角示意图

Figure 5. Spatial azimuth and polar angle diagram

下载: 全尺寸图片幻灯片

图 6 纤维角度空间分布

Figure 6. Spatial distribution of fiber angle

下载: 全尺寸图片幻灯片

图 7 玄武岩纤维增强泡沫混凝土孔隙球形度

Figure 7. Basalt fiber reinforced foam concrete pore sphericity

下载: 全尺寸图片幻灯片

图 8 玄武岩纤维增强泡沫混凝土单轴压缩应力-应变曲线

Figure 8. Uniaxial compression stress-strain curve of basalt fiber reinforced foam concrete

下载: 全尺寸图片幻灯片

图 9 玄武岩纤维增强泡沫混凝土声发射信号参数

Figure 9. Acoustic emission signal parameters of basalt fiber reinforced foam concrete

下载: 全尺寸图片幻灯片

图 10 玄武岩纤维增强泡沫混凝土声发射$ {b}_{\mathrm{i}} $值

Figure 10. Acoustic emission $ {b}_{\mathrm{i}} $ value of basalt fiber reinforced foam concrete

下载: 全尺寸图片幻灯片

表 1 玄武岩纤维增强泡沫混凝土配合比

Table 1. Mix proportion of foam concrete

Sample No.	Mix proportion/(kg·m⁻³)				Wet density/(kg·m⁻³)	Dry density/(kg·m⁻³)
Sample No.	Cement	Water	Foam	Basalt fiber	Wet density/(kg·m⁻³)	Dry density/(kg·m⁻³)
0%BF/FC-1	743.05	371.53	21.38	0	1170	1033
0%BF/FC-2	743.05	371.53	21.38	0	1200	1046
0%BF/FC-3	743.05	371.53	21.38	0	1180	1041
0.5%BF/FC-1	743.05	371.53	21.38	4.2	1206	1052
0.5%BF/FC-2	743.05	371.53	21.38	4.2	1200	1050
0.5%BF/FC-3	743.05	371.53	21.38	4.2	1199	1048
1.5%BF/FC-1	743.05	371.53	21.38	8.4	1169	1032
1.5%BF/FC-2	743.05	371.53	21.38	8.4	1170	1035
1.5%BF/FC-3	743.05	371.53	21.38	8.4	1172	1036
2.5%BF/FC-1	743.05	371.53	21.38	12.6	1181	1045
2.5%BF/FC-2	743.05	371.53	21.38	12.6	1203	1047
2.5%BF/FC-3	743.05	371.53	21.38	12.6	1208	1050
Notes: The specimen number as 0.5%BF/FC-1, where 0.5%BF/FC represents the volume ratio of basalt fiber, and 1 represents the specimen number.

下载: 导出CSV

[1]	宋强, 张鹏, 鲍玖文, 等. 泡沫混凝土的研究进展与应用[J]. 硅酸盐学报, 2021, 49(2): 398-410. doi: 10.14062/j.issn.0454-5648.20200316 SONG Q, ZHANG P, BAO J W, et al. Research progress and application of foam concrete[J]. Journal of the Chinese Ceramic Society, 2021, 49(2): 398-410(in Chinese). doi: 10.14062/j.issn.0454-5648.20200316
[2]	GUO Y Z, CHEN X D, CHEN B, et al. Analysis of foamed concrete pore structure of railway roadbed based on X-ray computed tomography[J]. Construction and Building materials, 2021, 273: 121773. doi: 10.1016/j.conbuildmat.2020.121773
[3]	袁志颖, 陈波, 陈家林, 等. 泡沫混凝土孔结构表征及其对力学性能的影响[J]. 复合材料学报, 2023, 40(7): 4117-4127. YUAN Z Y, CHEN B, CHEN J L, et al. Characterization of pore structure of foamed concrete and its influence on performance[J]. Acta Materiae Compositae Sinica, 2023, 40(7): 4117-4127(in Chinese).
[4]	M. Amran, R. Fediuk, N. Vatin, et al. Fibre-Reinforced Foamed Concretes: A Review[J]. Materials, 2020, 13, 4323.
[5]	GENCEL O, NODEHI M, BAYRAKTAR O Y, et al. Basalt fiber-reinforced foam concrete containing silica fume: An experimental study[J]. Construction and Building materials, 2022, 326: 126861. doi: 10.1016/j.conbuildmat.2022.126861
[6]	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, 2023, 40(3): 1569-1585. WANG X J, CUI H R, ZHOU H Y, et al. Mechanical performance of basalt fiber reinforced foam concrete subjected to quasi-static tensile and compressive tests[J]. Acta Materiae Compositae Sinica, 2023, 40(3): 1569-1585(in Chinese).
[7]	程新, 詹炳根, 周安. 玄武岩纤维对泡沫混凝土收缩开裂的影响[J]. 合肥工业大学学报(自然科学版), 2019, 42(8): 1114-1118. CHEN X, ZHAN B G, ZHOU A. Effect of basalt fiber on shrinkage and cracking of foam concrete[J]. Journal of Hefei University of Technology(Natural Science), 2019, 42(8): 1114-1118(in Chinese).
[8]	范然森, 程新, 詹炳根. 玄武岩纤维泡沫混凝土性能研究及抗裂评价[J]. 合肥工业大学学报(自然科学版), 2020, 43(9): 1223-1228. FAN R S, CHEN X, ZHAN B G. Performance study and crack resistance evaluation of basalt fiber foam concrete[J]. Journal of Hefei University of Technology(Natural Science), 2020, 43(9): 1223-1228(in Chinese).
[9]	BAYRAKTAR O Y, KAPLAN G, GENCEL O, et al. Physico-mechanical, durability and thermal properties of basalt fiber reinforced foamed concrete containing waste marble powder and slag[J]. Construction and Building materials, 2021, 288: 123128. doi: 10.1016/j.conbuildmat.2021.123128
[10]	高志涵, 陈波, 陈家林, 等. 基于X-CT的泡沫混凝土孔隙结构与导热性能[J]. 建筑材料学报, 2023, 26(7): 723-730. doi: 10.3969/j.issn.1007-9629.2023.07.004 GAO Z H, CHEN B, CHEN J L, et al. Pore Structure and Thermal Conductivity of Foam Concrete Based on X-CT[J]. Journal of Building Materials, 2023, 26(7): 723-730(in Chinese). doi: 10.3969/j.issn.1007-9629.2023.07.004
[11]	庞超明, 王少华. 泡沫混凝土孔结构的表征及其对性能的影响[J]. 建筑材料学报, 2017, 20(1): 93-98. PANG C M, WANG S H, Void characterization and effect on properties of foam concrete[J]. Journal of Building Materials, 2017, 20(1): 93-98(in Chinese).
[12]	焦华喆, 吴亚闯, 陈峰宾, 等. 基于可视化分析的玄武岩纤维喷射混凝土微观结构研究[J]. 土木工程学报, 2020, 53(S1): 371-377. doi: 10.15951/j.tmgcxb.2020.s1.059 JIAO H J, WU Y C, CHEN F B, et al. Microstructure of basalt fiber shotcrete based on visual analysis[J]. China Civil Engineering Journal, 2020, 53(S1): 371-377(in Chinese). doi: 10.15951/j.tmgcxb.2020.s1.059
[13]	CHEN B, CHEN J, CHEN X, et al. Experimental study on compressive strength and frost resistance of steam cured concrete with mineral admixtures[J]. Construction and Building Materials, 2022, 325: 126725. doi: 10.1016/j.conbuildmat.2022.126725
[14]	中华人民共和国住房和城乡建设部. 泡沫混凝土: JG/T266−2011[S]. 北京: 中国标准出版社, 2011. Ministry of Housing and Urban-Rural Development of the People's Republic of China. Foamed concrete: JG/T266−2011[S]. Beijing: Standards Press of China, 2011(in Chinese).
[15]	中华人民共和国国家质量监督检验检疫总局. 无损检测声发射检测总则: GB/T 26644-2011[S]. 2011. General Administration of Quality Supervision, Inspection and Quarantine of the People 's Republic of China. General principles of acoustic emission testing for non-destructive testing: GB/T 26644-2011 [S]. 2011(in Chinese).
[16]	BERNAL J L P, BELLO M A. Fractal geometry and mercury porosimetry Comparison and application of proposed models on building stones[J]. Applied surface science, 2001, 185: 99-107. doi: 10.1016/S0169-4332(01)00649-3
[17]	詹奇淇, 詹炳根. 玄武岩纤维增强泡沫混凝土韧性及抗压强度试验研究[J]. 合肥工业大学学报(自然科学版), 2020, 43(05): 667-672. ZHAN Q Q, ZHAN B G. Experimental study on toughness and compressive strength of basalt fiber reinforced foamed concrete[J]. Journal of HEFEI University of Technology (Natural Science), 2020, 43(05): 667-672.
[18]	周程涛, 陈波, 高志涵. 冻融环境下泡沫混凝土的单轴压缩特性[J]. 硅酸盐通报, 2023, 42(4): 1233-1241. doi: 10.3969/j.issn.1001-1625.2023.4.gsytb202304011 ZHOU C T, CHEN B, GAO Z H. Uniaxial Compression Characteristics of Foamed Concrete under Freeze-thaw Environment[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(4): 1233-1241(in Chinese). doi: 10.3969/j.issn.1001-1625.2023.4.gsytb202304011
[19]	李升涛, 陈徐东, 张锦华, 等. 不同密度等级泡沫混凝土的单轴压缩破坏特征[J]. 建筑材料学报, 2021, 24(6): 1146-1153. doi: 10.3969/j.issn.1007-9629.2021.06.004 LI S T, CHEN X D, ZHANG J H, et al. Failure characteristics of foam concrete with different density under uniaxial compression[J]. Journal of Building Materials, 2021, 24(6): 1146-1153(in Chinese). doi: 10.3969/j.issn.1007-9629.2021.06.004
[20]	LIU M Y, L J, MING P, et al. Study of fracture properties and post-peak softening process of rubber concrete based on acoustic emission[J]. Construction and Building materials, 2021, 313: 125487. doi: 10.1016/j.conbuildmat.2021.125487
[21]	LI S L, H J, GUO P, et al. Analysis of acoustic emission parameters of steel plate reinforcement effect on shearing zone of ECC-NC composite beams[J]. Engineering Structures, 2022, 266: 114505. doi: 10.1016/j.engstruct.2022.114505
[22]	LIU F, GUO R, LIN X J, et al. Monitoring the damage evolution of reinforced concrete during tunnel boring machine hoisting by acoustic emission[J]. Construction and Building materials, 2022, 327: 127000. doi: 10.1016/j.conbuildmat.2022.127000
[23]	曾鹏, 曹蔚, 赵奎, 等. 选矿废水拌合尾砂胶结充填体强度演化规律及声发射特征[J/OL]. 煤炭学报: 1-13[2023-09-24]. https://doi.org/10.13225/j.cnki.jccs.2023.0498. ZENG P, CAO W, ZHAO K, et al. Strength evolution and acoustic emission characteristics of cemented tailing filling body mixed with mineral processing wastewater[J]. Journal of China coal society, 1-13[2023-09-24] (in Chinese).