非规则再生骨料建模及再生骨料混凝土数值模拟

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (1): 276-286.

非规则再生骨料建模及再生骨料混凝土数值模拟

胡焱博¹, 高鹏^{1, 2, 3, 4}, 李景哲¹, 章国辉⁵, 王国陶⁶, 董帅志¹, 储玉婷¹, 詹炳根^{1, 2, 3, 4}, 余其俊^{1, 2, 3, 4}

1.合肥工业大学土木与水利工程学院,合肥 230009;
2.水泥基材料低碳技术与装备教育部工程研究中心,合肥 230009;
3.安徽省水泥基材料低碳技术工程研究中心,合肥 230009;
4.土木工程结构与材料安徽省重点实验室,合肥 230009;
5.中铁四局集团有限公司,合肥 230022;
6.海南洋砼新材料有限公司,儋州 578101

收稿日期:2023-07-28 修订日期:2023-10-21 出版日期:2024-01-15 发布日期:2024-01-16
通信作者: 余其俊,博士,教授。E-mail:concyuq@scut.edu.cn高鹏,博士,研究员。E-mail:gaop@hfut.edu.cn
作者简介:胡焱博(1998—),男,硕士研究生。主要从事再生混凝土数值模拟的研究。E-mail:3439475192@qq.com
基金资助:
国家“十三五”重点研发计划(2020YFC1909902);国家自然科学基金青年科学基金(52002129);中央高校基本科研业务费专项资金资助(JZ2023HGTB0256,PA2023GDSK0069)

Modeling of Irregular Recycled Aggregates and Numerical Simulation of Recycled Aggregate Concrete

HU Yanbo¹, GAO Peng^1,2,3,4, LI Jingzhe¹, ZHANG Guohui⁵, WANG Guotao⁶, DONG Shuaizhi¹, CHU Yuting¹, ZHAN Binggen^1,2,3,4, YU Qijun^1,2,3,4

1. School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China;
2. Cement Based Materials Low Carbon Technology and Equipment Engineering Research Center of the Ministry of Education, Hefei 230009, China;
3. Anhui Province Cement Based Materials Low Carbon Technology Engineering Research Center, Hefei 230009, China;
4. Anhui Key Laboratory of Civil Engineering Structures and Materials, Hefei 230009, China;
5. China Railway No.4 Engineering Group Co., Ltd., Hefei 230022, China;
6. Hainan Yangtong New Materials Co., Ltd., Danzhou 578101, China

Received:2023-07-28 Revised:2023-10-21 Online:2024-01-15 Published:2024-01-16

摘要/Abstract

摘要： 传统再生骨料混凝土(RAC)模型多采用基本几何形状来代表再生骨料(RA)结构,这与实际情况差异较大。本文结合数字图像技术和傅里叶描述法构建了真实的二维骨料数据库,并提出了基于骨料叠加法随机生成RA的新方法。基于外接矩形框/内切圆的粗判定和基于重叠框的精细判定提出了一种新的适用于傅里叶重构骨料的快速投放算法,实现了不同RA取代率和RA残余砂浆含量的RAC细观结构的构建。基于内聚力模型根据随机生成的RAC的细观结构建立了数值模型,研究了RA取代率和RA残余砂浆含量对RAC单轴抗拉性能的影响。结果表明,RAC的抗拉强度和弹性模量随着RA取代率和RA残余砂浆含量的增加而降低,但峰值应变变化不大。该RA模型更符合实际,且附着砂浆的含量和分布可自主调整。

关键词: 傅里叶重构, 再生骨料, 再生骨料混凝土, 细观结构, 骨料投放算法, 内聚力模型

Abstract: Traditional recycled aggregate concrete (RAC) models mostly use basic geometries to represent recycled aggregate (RA) structures, which is quite different from the actual situation. In this paper, a real two-dimensional aggregate database was constructed by combining digital image technology and Fourier descriptor method, and a new method for random generation of RA based on aggregate overlap method was proposed. A new rapid placement algorithm suitable for Fourier reconstituted aggregate was proposed based on the coarse determination of the outer rectangular box/inscribed circle and the fine determination based on the overlap box. And the construction of RAC meso-structure with different RA substitution rates and RA residual mortar content was realized. Based on the cohesive zone model, a numerical model was established based on the meso-structure of randomly generated RAC, and the effects of RA substitution rate and RA residual mortar content on the uniaxial tensile performance of RAC were studied. The results show that the tensile strength and elastic modulus of RAC decrease with the increase of RA substitution rate and RA residual mortar content, but the peak strain does not change much. The RA model is more realistic, and the content and distribution of adhesion mortar can be adjusted independently.

Key words: Fourier reconstruction, recycled aggregate, recycled aggregate concrete, meso-structure, aggregate placement algorithm, cohesive zone model

中图分类号:

TU528.09

胡焱博, 高鹏, 李景哲, 章国辉, 王国陶, 董帅志, 储玉婷, 詹炳根, 余其俊. 非规则再生骨料建模及再生骨料混凝土数值模拟[J]. 硅酸盐通报, 2024, 43(1): 276-286.

HU Yanbo, GAO Peng, LI Jingzhe, ZHANG Guohui, WANG Guotao, DONG Shuaizhi, CHU Yuting, ZHAN Binggen, YU Qijun. Modeling of Irregular Recycled Aggregates and Numerical Simulation of Recycled Aggregate Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(1): 276-286.

参考文献

[1] DUAN Z H, LI B, XIAO J Z, et al. Optimizing mix proportion of recycled aggregate concrete by readjusting the aggregate gradation[J]. Structural Concrete, 2020, 22: E22-E32.
[2] WANG Y, PENG Y J, KAMEL M, et al. Mesomechanical properties of concrete with different shapes and replacement ratios of recycled aggregate based on base force element method[J]. Structural Concrete, 2019, 20: 1425-1437.
[3] 王雅思, 郑建岚, 游帆. 再生骨料强化方法研究进展[J]. 材料导报, 2021, 35(5): 5053-5061.
WANG Y S, ZHENG J L, YOU F. Review on enhancement methods of recycled aggregate[J]. Materials Reports, 2021, 35(5): 5053-5061 (in Chinese).
[4] 肖建庄, 李佳彬, 兰阳. 再生混凝土技术研究最新进展与评述[J]. 混凝土, 2003(10): 17-20+57.
XIAO J Z, LI J B, LAN Y. Research on recycled aggregate concrete: a review[J]. Concrete, 2003(10): 17-20+57 (in Chinese).
[5] WANG Y, LIU J A, ZHU P H, et al. Investigation of adhered mortar content on recycled aggregate using image analysis method[J]. Journal of Materials in Civil Engineering, 2021, 33(9): 04021225.
[6] 关博文, 吴佳育, 陈华鑫, 等. 再生骨料残余砂浆覆盖率测试及其对混凝土渗透性的影响[J]. 中国公路学报, 2021, 34(10): 155-165.
GUAN B W, WU J Y, CHEN H X, et al. Test of coverage rate of residual mortar on recycled aggregate and its influence on permeability of concrete[J]. China Journal of Highway and Transport, 2021, 34(10): 155-165 (in Chinese).
[7] 雷斌, 李召行, 熊进刚, 等. 基于细观尺度的再生混凝土性能研究综述[J]. 硅酸盐通报, 2017, 36(6): 1921-1928.
LEI B, LI Z H, XIONG J G, et al. Review on the properties of recycled concrete based on meso scale[J]. Bulletin of the Chinese Ceramic Society, 2017, 36(6): 1921-1928 (in Chinese).
[8] PENG Y J, CHU H, PU J W. Numerical simulation of recycled concrete using convex aggregate model and base force element method[J]. Advances in Materials Science and Engineering, 2016, 2016: 1-10.
[9] GAO S P, LIU Q, HAN F X, et al. Meso-analysis of recycled coarse aggregate self-compacting concrete on the basis of random aggregate model[J]. Advances in Materials Science and Engineering, 2022, 2022: 3336003.
[10] YU Y, ZHENG Y, GUO Y C, et al. Mesoscale finite element modeling of recycled aggregate concrete under axial tension[J]. Construction and Building Materials, 2021, 266: 121002.
[11] WANG X F, YANG Z J, YATES J R, et al. Monte Carlo simulations of mesoscale fracture modelling of concrete with random aggregates and pores[J]. Construction and Building Materials, 2015, 75: 35-45.
[12] BAO J W, LI S G, YU Z H, et al. Water transport in recycled aggregate concrete under sustained compressive loading: experimental investigation and mesoscale numerical modelling[J]. Journal of Building Engineering, 2021, 44: 103373.
[13] YU Y, ZHENG Y, ZHAO X Y. Mesoscale modeling of recycled aggregate concrete under uniaxial compression and tension using discrete element method[J]. Construction and Building Materials, 2021, 268: 121116.
[14] 徐梦婵. 基于椭圆(球)形随机骨料模型的再生混凝土细观力学性能研究[D]. 西安: 西安理工大学, 2021.
XU M C. Study on meso-mechanical properties of recycled concrete based on elliptic (spherical) random aggregate model[D]. Xi’an: Xi’an University of Technology, 2021 (in Chinese).
[15] WANG Y, PENG Y J, KAMEL M M A, et al. Base force element method based on the complementary energy principle for the damage analysis of recycled aggregate concrete[J]. International Journal for Numerical Methods in Engineering, 2020, 121(7): 1484-1506.
[16] YU Y, LIN L. Modeling and predicting chloride diffusion in recycled aggregate concrete[J]. Construction and Building Materials, 2020, 264: 120620.
[17] JAYASURIYA A, ADAMS M P, BANDELT M J. Generation and numerical analysis of random aggregate structures in recycled concrete aggregate systems[J]. Journal of Materials in Civil Engineering, 2020, 32(4): 04020044.
[18] 杨欣欣, 应黎坪, 彭一江. 基于数字图像处理技术的再生混凝土数值模拟[J]. 河北工业科技, 2018, 35(5): 329-334.
YANG X X, YING L P, PENG Y J. Numerical simulation of recycled concrete based on digital image processing technology[J]. Hebei Journal of Industrial Science and Technology, 2018, 35(5): 329-334 (in Chinese).
[19] PENG Y J, YING L P, KAMEL M M A, et al. Mesoscale fracture analysis of recycled aggregate concrete based on digital image processing technique[J]. Structural Concrete, 2020, 22: E33-E47.
[20] 岳强, 王丽, 刘福胜, 等. 基于真实细观模型的再生混凝土破坏数值研究[J]. 建筑材料学报, 2016, 19(2): 221-228.
YUE Q, WANG L, LIU F S, et al. Numerical study on damage process of recycled aggregate concrete by real meso-scale model[J]. Journal of Building Materials, 2016, 19(2): 221-228 (in Chinese).
[21] QIAN Z, GARBOCZI E J, YE G, et al. Anm: a geometrical model for the composite structure of mortar and concrete using real-shape particles[J]. Materials and Structures, 2016, 49(1): 149-158.
[22] 张龙飞, 谢浩, 陈燕伟, 等. 基于激光扫描的细观混凝土模型[J]. 中国科学: 技术科学, 2022, 52(7): 1121-1133.
ZHANG L F, XIE H, CHEN Y W, et al. Meso-concrete modeling based on laser scanning technology[J]. Scientia Sinica (Technologica), 2022, 52(7): 1121-1133 (in Chinese).
[23] ZHOU Y L, JIN H, WANG B L. Modeling and mechanical influence of meso-scale concrete considering actual aggregate shapes[J]. Construction and Building Materials, 2019, 228: 116785.
[24] SU D, YAN W M. Quantification of angularity of general-shape particles by using Fourier series and a gradient-based approach[J]. Construction and Building Materials, 2018, 161: 547-554.
[25] 方浩, 张巍, 肖瑞, 等. 砂土颗粒形状的傅里叶描述符自动生成[J]. 高校地质学报, 2018, 24(4): 604-612.
FANG H, ZHANG W, XIAO R, et al. Automatic fourier-descriptor-based generation of paticle shape of sandy soil[J]. Geological Journal of China Universities, 2018, 24(4): 604-612 (in Chinese).
[26] NIVEDIT D. Modeling three-dimensional shape of sand grains using discrete element method[D]. Tampa Bay: University of South Florida, 2007.
[27] MOLLON G, ZHAO J D. Fourier-Voronoi-based generation of realistic samples for discrete modelling of granular materials[J]. Granular Matter, 2012, 14(5): 621-638.
[28] 任大瑞. 混凝土细观裂纹演化规律及本构模型研究[D]. 北京: 北京交通大学, 2022.
REN D R. Study on evolution law and constitutive model of meso-cracks in concrete[D]. Beijing: Beijing Jiaotong University, 2022 (in Chinese).
[29] 蔡园园, 房怀英, 余文, 等. 采用数字图像处理的机制砂粒度级配检测方法[J]. 华侨大学学报(自然科学版), 2019, 40(5): 567-573.
CAI Y Y, FANG H Y, YU W, et al. Digital image processing based particle size grading measurement method for machine-made sand[J]. Journal of Huaqiao University (Natural Science), 2019, 40(5): 567-573 (in Chinese).
[30] GARBOCZI E J, BULLARD J W. Contact function, uniform-thickness shell volume, and convexity measure for 3D star-shaped random particles[J]. Powder Technology, 2013, 237: 191-201.
[31] 谢浩. 基于内聚力模型的细观混凝土破坏过程及机理研究[D]. 北京: 中国矿业大学(北京), 2020.
XIE H. Study on failure process and mechanism of meso-concrete based on cohesion model[D]. Beijing: China University of Mining & Technology, Beijing, 2020 (in Chinese).[32] 熊学玉, 肖启晟. 基于内聚力模型的混凝土细观拉压统一数值模拟方法[J]. 水利学报, 2019, 50(4): 448-462.
XIONG X Y, XIAO Q S. A unified meso-scale simulation method for concrete under both tension and compression based on cohesive zone model[J]. Journal of Hydraulic Engineering, 2019, 50(4): 448-462 (in Chinese).
[33] 刘琼, 肖建庄, 李文贵. 再生混凝土轴心受拉性能试验与格构数值模拟[J]. 四川大学学报(工程科学版), 2010, 42(增刊1): 119-124.
LIU Q, XIAO J Z, LI W G. Axial tensile test and lattice model simulation on recycled concrete[J]. Journal of Sichuan University (Engineering Science Edition), 2010, 42(supplement 1): 119-124 (in Chinese).
[34] WALRAVEN J C, REINHARDT H W. Theory and experiments on the mechanical behavior of cracks in plain and reinforced concrete subjected to shear loading[R]. NASA STI/Recon Technical Report N, 1981.