Prediction of the Macroscopic Mechanics Properties of Recycled Aggregate Concrete Based on the Mesoscopic Equivalence Theory
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摘要:
预测分析再生混凝土各组分对再生混凝土宏观力学参数的影响是开展再生混凝土基本力学性能的一种方式。为了分析再生混凝土各组分对再生混凝土宏观力学参数的影响，根据再生混凝土的细观结构组成，建立了细观等效模型，利用扭转变形、细观夹杂理论、弹性等效思想和M-T模型方法，推导了由原生骨料、老界面层、老水泥砂浆、新界面层和新水泥砂浆等组成的再生混凝土的宏观力学参数预测模型。预测结果表明，随着再生骨料的取代率增加，水泥砂浆的含量不断增加，再生混凝土孔隙率也随之增大，导致再生混凝土的Poisson比随之增大，弹性模量、剪切模量和体积模量不断降低。模型的预测结果较好地反映了再生混凝土宏观力学参数随再生骨料取代率的增加不断变化的这一趋势，也为再生混凝土宏观力学参数的预测提供了一条简单实用的新方法，有利于再生混凝土基本力学性能的研究分析。
Abstract:Prediction of the influence of each component of recycled aggregate concrete on the macroscopic mechanics properties of recycled aggregate concrete is a way to develop the basic mechanics properties of recycled aggregate concrete. For this purpose, a meso-equivalent model was established according to the meso-structure composition of recycled aggregate concrete. Based on the torsional deformation theory, the meso-inclusion theory, the elastic equivalent thought and the M-T model, the prediction model for macroscopic mechanics properties of recycled aggregate concrete composed of natural aggregate, old interface, old cement mortar, new interface and new cement mortar, was deduced. The prediction results show that, with the increase of the recycled aggregate replacement rate, the content of cement mortar and the porosity of recycled aggregate concrete rise, resulting in the increase of Poisson’s ratio of recycled aggregate concrete, and the decreases of the elastic modulus, the shear modulus and the volume modulus. The model well predicts the changing trend of the macroscopic mechanics properties of recycled aggregate concrete with the increase of the recycled aggregate replacement rate, and provides a simple and practical new way to the research and analysis of the basic mechanics properties of recycled aggregate concrete.
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图 1 界面过渡区空心圆柱等效模型
Figure 1. The equivalent model for the hollow cylinder in the interfacial transition zone
图 2 界面过渡区均化等效示意图
Figure 2. The homogenized equivalent schematic diagram of the interfacial transition zone
图 3 骨料实心圆柱等效模型
Figure 3. The equivalent model for the solid cylinder of recycled aggregates
图 7 再生混凝土空心圆柱等效模型：（a） 空心圆柱模型；（b） 等效模型
Figure 7. The equivalent model for the recycled concrete hollow cylinder: （a） the hollow cylinder model; （b） the equivalent model
图 8 再生骨料取代率对再生混凝土孔隙率的影响
Figure 8. Effects of the recycled aggregate replacement rate on the recycled aggregate concrete porosity
图 9 等效弹性模量的预测结果与相关文献数据对比情况
Figure 9. Prediction results of the effective elastic modulus and experimental results from relevant literatures
图 10 等效剪切模量的预测结果与相关文献数据对比情况
Figure 10. Prediction results of the effective shear modulus and experimental results from relevant literature
图 11 再生取代率对再生混凝土等效Poisson比的影响
Figure 11. Effects of the recycled aggregate replacement rate on effective Poisson’s ratio of the recycled aggregate concrete
图 12 孔隙率对再生混凝土等效剪切模量和体积模量的影响
Figure 12. Effects of the porosity on the effective shear modulus and volume modulus of the recycled aggregate concrete
表 1 再生混凝土各组分材料参数表
Table 1. Material parameters of recycled aggregate concrete
material elastic modulus ERAC/GPa Poisson’s ratio μRAC shear modulus
GRAC/GPanatural aggregate 70 0.16 30.17 old interface 10 0.2 4.17 old cement mortar 20 0.22 8.20 new interface 12 0.2 5.00 new cement mortar 23 0.22 9.43 
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[1] 李佳彬, 肖建庄, 孙振平. 再生粗骨料特性及其对再生混凝土性能的影响[J]. 建筑材料学报, 2004, 7(4): 390-395 doi: 10.3969/j.issn.1007-9629.2004.04.006LI Jiabin, XIAO Jianzhuang, SUN Zhenping. Properties of recycled coarse aggregate and its influence on recycled concrete[J]. Journal of Building Materials, 2004, 7(4): 390-395.(in Chinese) doi: 10.3969/j.issn.1007-9629.2004.04.006 [2] 李冬, 金浏, 杜修力, 等. 骨料级配对二维模型混凝土单轴抗拉强度影响的理论研究[J]. 工程力学, 2017, 34(6): 64-72LI Dong, JIN Liu, DU Xiuli, et al. A theoretical study on the influence of aggregate gradation on the tensile strength of 2-dimensional model concrete[J]. Engineering Mechanics, 2017, 34(6): 64-72.(in Chinese) [3] 王耀, 赵华玮, 胥民尧, 等. 基于基面力概念的不同再生骨料取代率混凝土细观损伤研究[J]. 混凝土, 2018(7): 76-80 doi: 10.3969/j.issn.1002-3550.2018.07.020WANG Yao, ZHAO Huawei, XU Minyao, et al. Research on mesoscopic damage of concrete with different recycled aggregate replacement ratios based on base force element method[J]. Concrete, 2018(7): 76-80.(in Chinese) doi: 10.3969/j.issn.1002-3550.2018.07.020 [4] 胡敏萍. 不同取代率再生粗骨料混凝土的力学性能[J]. 混凝土, 2007(2): 52-54 doi: 10.3969/j.issn.1002-3550.2007.02.016HU Minping. Mechanical properties of concrete prepared with different recycled coarse aggregates replacement rate[J]. Concrete, 2007(2): 52-54.(in Chinese) doi: 10.3969/j.issn.1002-3550.2007.02.016 [5] 宋灿, 陈爱玖. 再生粗骨料对再生混凝土基本性能的影响[J]. 煤炭技术, 2011, 30(6): 159-161SONG Can, CHEN Aijiu. Effect of recycled coarse aggregate on fundamental propertied of recycled concrete[J]. Coal Technology, 2011, 30(6): 159-161.(in Chinese) [6] XIAO J, LI W, CORR D J, et al. Simulation study on the stress distribution in modeled recycled aggregate concrete under uniaxial compression[J]. Journal of Materials in Civil Engineering, 2013, 25(4): 504-518. doi: 10.1061/(ASCE)MT.1943-5533.0000598 [7] LASERNA S, MONTERO J. Influence of natural aggregates typology on recycled concrete strength properties[J]. Construction and Building Materials, 2016, 115: 78-86. doi: 10.1016/j.conbuildmat.2016.04.037 [8] HE A, CAI J, CHEN Q J, et al. Axial compressive behaviour of steel-jacket retrofitted RC columns with recycled aggregate concrete[J]. Construction and Building Materials, 2017, 141: 501-516. doi: 10.1016/j.conbuildmat.2017.03.013 [9] 霍洪媛, 范程程, 陈爱玖. 不同强度等级的再生骨料对再生混凝土基本力学性能影响[J]. 混凝土, 2017(2): 60-62,65 doi: 10.3969/j.issn.1002-3550.2017.02.016HUO Hongyuan, FAN Chengcheng, CHEN Aijiu. Influence of the recycled aggregate with different strength on recycled concrete[J]. Concrete, 2017(2): 60-62,65.(in Chinese) doi: 10.3969/j.issn.1002-3550.2017.02.016 [10] 肖建庄, 刘琼, 李文贵, 等. 再生混凝土细微观结构和破坏机理研究[J]. 青岛理工大学学报, 2009, 30(4): 24-30 doi: 10.3969/j.issn.1673-4602.2009.04.006XIAO Jianzhuang, LIU Qiong, LI Wengui, et al. On the micro- and meso-structure and failure mechanism of recycled concrete[J]. Journal of Qingdao Technological University, 2009, 30(4): 24-30.(in Chinese) doi: 10.3969/j.issn.1673-4602.2009.04.006 [11] CHRISTENSEN R M, LO K H. Solutions for effective shear properties in three phase sphere and cylinder models[J]. Journal of the Mechanics and Physics of Solids, 1979, 27(4): 315-330. doi: 10.1016/0022-5096(79)90032-2 [12] LEE K J, WESTMANN R A. Elastic properties of hollow-sphere-reinforced composites[J]. Journal of Composite Materials, 1970, 4(2): 242-252. doi: 10.1177/002199837000400209 [13] VOIGT W. Ueber die beziehung zwischen den beiden elasticitätsconstanten isotroper körper[J]. Annalen der Physik, 1889, 274(12): 573-587. [14] REUSS A. Berechnung der fliessgrenze von Mischkristallen auf grund der plastizitatsbedingung für einkristalle[J]. ZAMM Journal of Applied Mathematics & Mechanics Ztschrift fur Angewandte Mathematik und Mechanik, 1929, 9: 49-58. [15] HILL R. A self-consistent mechanics of composite materials[J]. Journal of the Mechanics and Physics of Solids, 1965, 13(4): 213-222. doi: 10.1016/0022-5096(65)90010-4 [16] MORI T, TANAKA K. Average stress in the matrix and average elastic energy of materials with misfitting inclusions[J]. Acta Metallurgica, 1973, 21(5): 571-574. doi: 10.1016/0001-6160(73)90064-3 [17] ZHENG Q S, DU D X. An explicit and universally applicable estimate for the effective properties of multiphase composites which accounts for inclusion distribution[J]. Journal of the Mechanics and Physics of Solids, 2001, 49(11): 2765-2788. doi: 10.1016/S0022-5096(01)00078-3 [18] NI Y, CHIANG M. Prediction of elastic properties of heterogeneous materials with complex microstructures[J]. Journal of the Mechanics and Physics of Solids, 2007, 55: 517-532. doi: 10.1016/j.jmps.2006.09.001 [19] HUANG J S, GIBSON L J. Elastic moduli of a composite of hollow spheres in a matrix[J]. Journal of the Mechanics and Physics of Solids, 1993, 41(1): 55-75. doi: 10.1016/0022-5096(93)90063-L [20] PAUL B. Prediction of elastic constants of multiphase materials[J]. Transactions of the AIME, 1959, 218: 1-19. [21] ZIMMERMAN R W, KING M S, MOMTERIO P J M. The elastic modulus of mortar as a porous granular material[J]. Cement & Concrete Research, 1986, 16(2): 239-245. [22] YAMAN I O, AKUAN H M, HEARN A. Active and non-active porosity in concrete part Ⅱ: evaluation of existing models[J]. Materials and Structures, 2002, 35(2): 110-116. doi: 10.1007/BF02482110 [23] SANAHUJA J, DORMIRUC M, CHANVILLARD G. Modelling elasticity of a hydrating cement paste[J]. Cement & Concrete Research, 2007, 37(10): 1427-1439. [24] 李天一, 章青, 夏晓舟, 等. 考虑混凝土材料非均质特性的近场动力学模型[J]. 应用数学和力学, 2018, 39(8): 913-924LI Tianyi, ZHANG Qing, XIA Xiaozhou, et al. A peridynamic model for heterogeneous concrete materials[J]. Applied Mathematics and Mechanics, 2018, 39(8): 913-924.(in Chinese) [25] 陈青青, 张煜航, 张杰, 等. 含孔隙混凝土二维细观建模方法研究[J]. 应用数学和力学, 2020, 41(2): 182-194CHEN Qingqing, ZHANG Yuhang, ZHANG Jie, et al. Study on a 2D mesoscopic modeling method for concrete with voids[J]. Applied Mathematics and Mechanics, 2020, 41(2): 182-194.(in Chinese) [26] WALRAVEN J C, REINHARDT H W. Theory and experiments on the mechanical behaviour of cracks in plain and reinforced concrete subjected to shear loading[J]. HERON, 1991, 26(1A): 26-35. [27] 张金喜, 张建华, 邬长森. 再生混凝土性能和孔结构的研究[J]. 建筑材料学报, 2006, 9(2): 142-147 doi: 10.3969/j.issn.1007-9629.2006.02.003ZHANG Jinxi, ZHANG Jianhua, WU Changsen. Study on properties and pore structure of recycled concrete[J]. Journal of Building Material, 2006, 9(2): 142-147.(in Chinese) doi: 10.3969/j.issn.1007-9629.2006.02.003 [28] 张剑波, 吴勇生, 孙可伟, 等. 再生骨料混凝土孔隙结构的试验研究[J]. 硅酸盐通报, 2011, 30(1): 239-244ZHANG Jianbo, WU Yongsheng, SUN Kewei, et al. Experiment and study on pore structure of recycled aggregate concrete[J]. Bulletin of the Chinese Ceramic Society, 2011, 30(1): 239-244.(in Chinese) [29] 余波, 刘才勇, 杨绿峰. 再生粗骨料混凝土的孔隙率计算模型[J]. 混凝土, 2017(11): 31-34 doi: 10.3969/j.issn.1002-3550.2017.11.008YU Bo, LIU Caiyong, YANG Lüfeng. Computing model for porosity of recycled coarse aggregate concrete[J]. Concrete, 2017(11): 31-34.(in Chinese) doi: 10.3969/j.issn.1002-3550.2017.11.008 [30] 沈大钦. 再生骨料混凝土性能的研究[D]. 硕士学位论文. 北京: 北京交通大学, 2006.SHEN Daqin. Study of recycled aggregate concrete[D]. Master Thesis. Beijing: Beijing Jiaotong University, 2006. (in Chinese) [31] 袁飚. 再生混凝土抗压抗拉强度取值研究[D]. 硕士学位论文. 上海: 同济大学, 2007.YUAN Biao. On values of compressive strength and tensile strength of recycled aggregate concrete[D]. Master Thesis. Shanghai: Tongji University, 2007. (in Chinese) [32] YAMAN I O, HEARN N, AKTAN H M. Active and non-activ eporosity in concrete, part Ⅰ: experimental evidence[J]. Material and Structure, 2002, 35(3): 102-109. [33] 王海龙, 李庆斌. 饱和混凝土的弹性模量预测[J]. 清华大学学报(自然科学版), 2005, 45(6): 761-763,775 doi: 10.3321/j.issn:1000-0054.2005.06.012WANG Hailong, LI Qingbin. Saturated concrete elastic modulus prediction[J]. Journal Tsinghua University (Science and Technology) , 2005, 45(6): 761-763,775.(in Chinese) doi: 10.3321/j.issn:1000-0054.2005.06.012 [34] 金昌. 再生混凝土力学性能指标试验研究[D]. 硕士学位论文. 武汉: 武汉理工大学, 2008.JIN Chang. Experimental research on mechanical performance indexes of recycled concrete[D]. Master Thesis. Wuhan: Wuhan University of Technology, 2008. (in Chinese) [35] 中华人民共和国住房和城乡建设部, 中华人民共和国国家质量监督检验检疫总局. 混凝土结构设计规范: GB50010—2010[S]. 北京: 中国建筑工业出版社, 2011.Ministry of Housing and Urban-Rural Development of the People’s Republic of China, General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China. Code for design of concrete structures: GB50010—2010[S]. Beijing: China Architecture & Building Press, 2011. (in Chinese) [36] RAVINDRARAJAH R, TAM C T. Properties of concrete made with crushed concrete as coarse aggregate[J]. Magazine of Concrete Research, 1985, 37(130): 29-38. doi: 10.1680/macr.1985.37.130.29 [37] 周静海, 何海进, 孟宪宏, 等. 再生混凝土基本力学性能试验[J]. 沈阳建筑大学学报(自然科学版), 2010, 26(3): 464-467ZHOU Jinghai, HE Haijin, MENG Xianhong, et al. Basic mechanical properties of recycled concrete experimental study[J]. Journal of Shenyang Jianzhu University (Natural Science) , 2010, 26(3): 464-467.(in Chinese) -
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