|Table of Contents|

Study of Lime Soil Mechanical Model Based on SEM Images(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2022年05期
Page:
202-212
Research Field:
基础工程
Publishing date:

Info

Title:
Study of Lime Soil Mechanical Model Based on SEM Images
Author(s):
YUE Jian-wei1; 2;  CHEN Ying1; 3;  KONG Qing-mei1; 2;  ZHAO Li-min1; 2;  LUO Zhen-xian1; 2
(1. School of Civil Engineering and Architecture, Henan University, Kaifeng 475004, Henan, China; 2. Key Laboratory for Restoration and Safety Evaluation of Immovable Cultural Relics in Kaifeng, Henan University, Kaifeng 475004, Henan, China; 3. School of Civil Engineering, Central South University, Changsha 410075, Hunan, China)
Keywords:
micro scale;  analysis model;  lime soil;  cementation;  damage model
PACS:
TU43
DOI:
10.19815/j.jace.2021.06046
Abstract:
Lime soil is commonly used in ancient buildings. Due to the requirements of cultural relics protection, the sampling of lime soil is limited. Therefore, it is of great significance to establish a suitable mechanical analysis method for studying the mechanical properties of lime soil and ancient buildings. According to the composition of three-phase medium and micro-scale of soil, the lime soil was divided into three parts: particles, cementations and pores. Based on the 300 times SEM microstructure and image processing technology, the lime soil analysis model was constructed. According to the particle size composition and the test data, the stress characteristics of the cementation were analyzed, the plastic damage model of the cementation was obtained, and the uniaxial mechanical properties were simulated. Based on the laboratory cementation test results, the stress-strain relationship between cementation and water content was established. The study results show that the uniaxial compression test results of lime soil samples are consistent with the numerical simulation results based on the micro-scale lime soil analysis model, which verifies the feasibility of the mechanical analysis of lime soil based on the SEM analysis model. Within a certain range of water content, the stress-strain variation laws of 0.075 mm and 0.1 mm particle size cements are basically consistent. Under the action of uniaxial compression load, the damage failure and cracks firstly appear at the interface between particles and cements and around the pores. The main reason is that there is stress concentration in this area, and with the increase of load, the damage area extends outwards, forming an obliquely coherent fault zone, and finally leading to the failure of the specimen.

References:

[1] 岳建伟,林 健,王永锋,等.开封仿遗址土水理性质的改良研究[J].工程科学与技术,2020,52(1):46-55.
YUE Jian-wei,LIN Jian,WANG Yong-feng,et al.Study on the Improvement of Soil Water in Kaifeng Imitation Site[J].Advanced Engineering Sciences,2020,52(1):46-55.
[2]WEI G,GERMINARIO C,GRIFA C,et al.Characterization of Ancient Building Lime Mortars of Anhui Province,China:A Multi-analytical Approach[J].Archaeometry,2020,62(5):888-903.
[3]ARIZZI A,VILES H,CULTRONE G.Experimental Testing of the Durability of Lime-based Mortars Used for Rendering Historic Buildings[J].Construction and Building Materials,2012,28(1):807-818.
[4]文 桃,米海珍,马连生,等.石灰改良黄土状硫酸盐渍土强度的影响因素研究[J].建筑科学与工程学报,2015,32(2):104-110.
WEN Tao,MI Hai-zhen,MA Lian-sheng,et al.Research on Effect Factors of Strength of Lime-treated Loessial Sulfate Salty Soil[J].Journal of Architecture and Civil Engineering,2015,32(2):104-110.
[5]李新明,路广远,张浩扬,等.石灰偏高岭土改良粉砂土强度特性与微观机理[J].建筑材料学报,2021,24(3):648-655.
LI Xin-ming,LU Guang-yuan,ZHANG Hao-yang,et al.Strength Characteristics and Micro-mechanism of Lime-metakaolin Modified Silty Soil[J].Journal of Building Materials,2021,24(3):648-655.
[6]KONG D Q,CHEN J X,WAN R,et al.Study on Restoration Materials for Historical Silty Earthen Sites Based on Lime and Starch Ether[J].Advances in Materials Science and Engineering,2020,2020:2850780.
[7]杜超群,王菊琳,张 涛.宛平城墙病害勘测及保护材料试验研究[J].科学技术与工程,2020,20(20):8316-8324.
DU Chao-qun,WANG Ju-lin,ZHANG Tao.Disease Investigation and Protection Materials to the Wanping City Wall[J].Science Technology and Engineering,2020,20(20):8316-8324.
[8]文 桃,杨涵宇,马 溪,等.硫酸盐环境下灰土压缩性指标变化的室内试验[J].建筑科学与工程学报,2015,32(5):104-110.
WEN Tao,YANG Han-yu,MA Xi,et al.Indoor Test on Compressibility Index Changes of Lime-soil in Sulfate Environment[J].Journal of Architecture and Civil Engineering,2015,32(5):104-110.
[9]徐维涛,黄仪一.清代开封城墙保存现状与保护建议[J].中外建筑,2019(6):41-44.
XU Wei-tao,HUANG Yi-yi.Preservation Status and Protection Suggestions of Kaifeng City Wall in Qing Dynasty[J].Chinese & Overseas Architecture,2019(6):41-44.
[10]谈云志,喻 波,郑 爱,等.石灰稳定红黏土强度的长期碳化效应[J].岩土力学,2013,34(增1):73-79.
TAN Yun-zhi,YU Bo,ZHENG Ai,et al.Long-term Carbonated Effect on Strength of Lime Stabilized Laterite Soils[J].Rock and Soil Mechanics,2013,34(S1):73-79.
[11]李新明,路广远,张浩扬,等.石灰偏高岭土改良粉砂土强度特性与微观机理[J].建筑材料学报,2021,24(3):648-655.
LI Xin-ming,LU Guang-yuan,ZHANG Hao-yang,et al.Strength Characteristics and Micro-mechanism of Lime-metakaolin Modified Silty Soil[J].Journal of Building Materials,2021,24(3):648-655.
[12]朱绘美,徐德龙,刘文欢.古建筑修复用熟石灰性能优化及机理研究[J].建筑材料学报,2017,20(6):902-908.
ZHU Hui-mei,XU De-long,LIU Wen-huan.Properties Optimization of Hydrated Lime Used in Ancient Building Restoration and Its Mechanism[J].Journal of Building Materials,2017,20(6):902-908.
[13]高国瑞.灰土增强机理探讨[J].岩土工程学报,1982,4(1):111-115.
GAO Guo-rui.Discussion on Strengthening Mechanism of Lime-loess[J].Chinese Journal of Geotechnical Engineering,1982,4(1):111-115.
[14]DELENNE J Y,EL YOUSSOUFI M S,CHERBLANC F,et al.Mechanical Behaviour and Failure of Cohesive Granular Materials[J].International Journal for Numerical and Analytical Methods in Geomechanics,2004,28(15):1577-1594.
[15]蒋明镜,卢厚华,李 涛,等.不同胶结物粒间胶结三维仿微观力学试验[J].同济大学学报(自然科学版),2017,45(11):1585-1591,1601.
JIANG Ming-jing,LU Hou-hua,LI Tao,et al.Three-dimensional Experimental Study on Mechanical Behavior of Cemented Granules by Different Bond Agents[J].Journal of Tongji University(Natural Science),2017,45(11):1585-1591,1601.
[16]BROCKEL U,WAHL M,KIRSCH R,et al.Formation and Growth of Crystal Bridges in Bulk Solids[J].Chemical Engineering & Technology,2006,29(6):691-695.
[17]KIRSCH R,BROCKEL U,BRENDEL L,et al.Measuring Tensile,Shear and Torsional Strength of Solid Bridges Between Particles in the Millimeter Regime[J].Granular Matter,2011,13(5):517-523.
[18]SHEN Z F,JIANG M J,WAN R.Numerical Study of Inter-particle Bond Failure by 3D Discrete Element Method[J].International Journal for Numerical and Analytical Methods in Geomechanics,2016,40(4):523-545.
[19]蒋明镜,陈 贺,刘 芳.岩石微观胶结模型及离散元数值仿真方法初探[J].岩石力学与工程学报,2013,32(1):15-23.
JIANG Ming-jing,CHEN He,LIU Fang.A Microscopic Bond Model for Rock and Preliminary Study of Numerical Simulation Method by Distinct Element Method[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(1):15-23.
[20]刘 芳,李 震,蒋明镜.粒间胶结尺寸对圆形颗粒法向接触响应的影响[J].地下空间与工程学报,2015,11(6):1450-1456.
LIU Fang,LI Zhen,JIANG Ming-jing.Effects of Bond Size on the Normal Contact Behavior of Two Bonded Particles[J].Chinese Journal of Underground Space and Engineering,2015,11(6):1450-1456.
[21]GRILO J,SANTOS SILVA A,FARIA P,et al.Mechanical and Mineralogical Properties of Natural Hydraulic Lime-metakaolin Mortars in Different Curing Conditions[J].Construction and Building Materials,2014,51:287-294.
[22]张艳美,马 丁,李国勋,等.纳米SiO2和石灰改良黄泛区粉土的力学特性研究[J].工程地质学报,2021,29(4):1233-1239.
ZHANG Yan-mei,MA Ding,LI Guo-xun,et al.Mechanical Properties of Nano-SiO2 and Lime-stabilized Silt in Yellow River Flood Area[J].Journal of Engineering Geology,2021,29(4):1233-1239.
[23]刘海涛,程晓辉.粗粒土尺寸效应的离散元分析[J].岩土力学,2009,30(增1):287-292.
LIU Hai-tao,CHENG Xiao-hui.Discrete Element Analysis for Size Effects of Coarse-grained Soils[J].Rock and Soil Mechanics,2009,30(S1):287-292.
[24]杜 彬,史小萌,张 新.尺寸效应在岩体相似材料模型试验中的应用[J].北京交通大学学报,2014,38(6):88-92.
DU Bin,SHI Xiao-meng,ZHANG Xin.Application of Size Effect in Rock Mass Similar Material Model Test[J].Journal of Beijing Jiaotong University,2014,38(6):88-92.
[25]ARYA V,SHARMA V,ARYA G.An Efficient Adaptive Algorithm for Electron Microscopic Image Enhancement and Feature Extraction[J].International Journal of Computer Vision and Image Processing,2019,9(1):1-16.
[26]WANG J,CAI P L.The Microstructure Formation Process Research in Loading Condition of Dredger Fill[J].Applied Mechanics and Materials,2014,580-583:213-218.
[27]冯怀平,马德良,刘启塬,等.基于扫描电镜图像的土体三维视孔隙率定量计算方法[J].岩土工程学报,2019,41(3):574-580.
FENG Huai-ping,MA De-liang,LIU Qi-yuan,et al.Method for Calculating Three Dimensional Apparent Porosity of Soils Based on SEM Images[J].Chinese Journal of Geotechnical Engineering,2019,41(3):574-580.
[28]刘星志,刘小文,陈 铭,等.基于3个不等粒径颗粒接触模型的土-水特征曲线[J].岩土力学,2018,39(2):651-656.
LIU Xing-zhi,LIU Xiao-wen,CHEN Ming,et al.Soil-water Characteristic Curve Based on Particle Contact Model Using Three Unequal Particle Sizes[J].Rock and Soil Mechanics,2018,39(2):651-656.
[29]XIE X,LI P,HOU X K,et al.Microstructure of Compacted Loess and Its Influence on the Soil-water Characteristic Curve[J].Advances in Materials Science and Engineering,2020,2020:1-12.
[30]杨宏印,来家玉,肖尊群,等.石英砂岩双轴压缩条件下的微观组构演化规律研究[J].中国矿业,2020,29(9):160-167.
YANG Hong-yin,LAI Jia-yu,XIAO Zun-qun,et al.Study on the Microfabric Evolution Law of Quartz Sandstone Under Biaxial Compression[J].China Mining Magazine,2020,29(9):160-167.
[31]LUBLINER J,OLIVER J,OLLER S,et al.A Plastic-damage Model for Concrete[J].International Journal of Solids and Structures,1989,25(3):299-326.
[32]ABU-LEBDEH T M,VOYIADJIS G Z.Plasticity-damage Model for Concrete Under Cyclic Multiaxial Loading[J].Journal of Engineering Mechanics,1993,119(7):1465-1484.
[33]LEE J,FENVES G L.A Plastic-damage Concrete Model for Earthquake Analysis of Dams[J].Earthquake Engineering and Structural Dynamics,1998,27(9):937-956.
[34]OBERMAYR M,DRESSLER K,VRETTOS C,et al.A Bonded-particle Model for Cemented Sand[J].Computers and Geotechnics,2013,49:299-313.
[35]王华宁,龚 浩,李富根,等.考虑宽度与厚度的颗粒胶结模型理论分析[J].岩土工程学报,2017,39(5):822-831.
WANG Hua-ning,GONG Hao,LI Fu-gen,et al.Analytical Solutions to Micro-bond Model for Particles Considering Width and Thickness of Bond[J].Chinese Journal of Geotechnical Engineering,2017,39(5):822-831.
[36]蒋明镜,李晨辉,刘 蔚,等.不同胶结半径的粒间胶结拉伸和压缩试验研究[J].岩土工程学报,2018,40(增2):12-16.
JIANG Ming-jing,LI Chen-hui,LIU Wei,et al.Extension and Compression Tests Mechanical Behaviors of Bonded Granules with Different Bond Widths[J].Chinese Journal of Geotechnical Engineering,2018,40(S2):12-16.
[37]VERMEER P A,DE BORST R.Non-associated Plasticity for Soils[J].Concrete and Rock,1984,29(3):1-64.
[38]LUBLINER J,OLIVER J,OLLER S,et al.A Plastic-damage Model for Concrete[J].International Journal of Solids and Structures,1989,25(3):299-326.
[39]唐洪祥,韦文成,林荣烽.考虑强度各向异性的黏性土应变局部化有限元分析[J].岩石力学与工程学报,2019,38(7):1485-1497.
TANG Hong-xiang,WEI Wen-cheng,LIN Rong-feng.Finite Element Analysis of Strain Localization of Cohesive Soils Considering Strength Anisotropy[J].Chinese Journal of Rock Mechanics and Engineering,2019,38(7):1485-1497.
[40]易 达,葛修润.基于CGP模型的岩土材料应力-应变曲线拟合[J].岩土力学,2005,26(4):617-620.
YI Da,GE Xiu-run.Fitting Stress-strain Curve of Geo-material Based on CGP Model[J].Rock and Soil Mechanics,2005,26(4):617-620.

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Last Update: 2022-09-30