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| Investigating resilient modulus characteristics and developing unified prediction model of unbound aggregate base materials recycled from construction and demolition waste |
| XIAO Yuanjie1，2，KONG Kunfeng1，3，JIANG Yu1，HUA Wenjun1，ZHU Hongwei3，CAI Degou3，LIU Yufei1 |
| (1. School of Civil Engineering，Central South University，Changsha，Hunan 410075，China；2. Ministry of Education(MOE) Key Laboratory of Engineering Structures of Heavy-haul Railway，Central South University，Changsha，Hunan 410075，China；3. Railway Engineering Research Institute，China Academy of Railway Sciences Corporation Limited，Beijing 100081，China) |
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Abstract Resilient modulus(MR) is an important mechanical performance indicator of unbound granular pavement materials subjected to repeated traffic loads，as well as a key input parameter of mechanistic pavement analysis and design. In order to investigate MR characteristics of unbound aggregate materials(UAMs) recycled from construction & demolition waste(CDW) under different combinations of influencing index properties and stress states，laboratory repeated load triaxial tests were conducted on UAMs recycled from single-source CDW，of which five different gradations，three different moisture content levels，three different compaction levels，and 15 different loading sequences were properly designed. The effects of index properties and stress states on MR were analyzed，and a unified MR prediction model was developed and further validated by using the shift factor and master curve concepts to incorporate multiple influencing factors. The laboratory testing results show that resilient modulus of UAMs recycled from CDW gradually decreased with decreasing degree of compaction or increasing moisture content and increased with increasing relative content of coarse particles. Both deviator stress and confining pressure affected resilient modulus of UAMs with the effect of confining pressure being relatively more significant. The unified MR prediction model developed can consider all the influencing factor while yielding satisfactory accuracy. The findings could provide theoretical basis and lay solid foundation for resource-conserving and value-added engineering applications of UAMs recycled from CDW in unbound granular pavement layers.
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| [1] BHA B，XW A，HK C，et al. Construction and demolition waste management in China through the 3R principle-Science Direct[J]. Resources，Conservation and Recycling，2018，129：36–44.
[2] ZHENG L，WU H，ZHANG H，et al. Characterizing the generation and flows of construction and demolition waste in China[J]. Construction and Building Materials，2017，136：405–413.
[3] 周文娟，张志伟，徐玉波. 建筑垃圾再生骨料无机混合料的力学及抗冻性能[J]. 材料导报，2020，34(增1)：234–236.(ZHOU Wenjuan，ZHANG Zhiwei，XU Yubo. Mechanical and frost resistance of inorganic binder stabilized construction waste recycled aggregate[J]. Materials Reports，2020，34(Supp.1)：234–236.(in Chinese))
[4] 王海成，金 娇，刘 帅，等. 环境友好型绿色道路研究进展与展望[J]. 中南大学学报：自然科学版，2021，52(7)：2 137–2 169. (WANG Haicheng，JIN Jiao，LIU Shuai，et al. Research progress and prospect of environment-friendly green road[J]. Journal of Central South University：Science and Technology，2021，52(7)：2 137–2 169.(in Chinese))
[5] 李 博，李玉博，肖建庄. 再生细骨料地基动力特性试验研究[J]. 建筑结构学报，2021，42(增1)：523–530.(LI Bo，LI Yubo，XIAO Jianzhuang. Experimental study on dynamic response of ground with recycled fine aggregates[J]. Journal of Building Structures，2021，42(Supp.1)：523–530.(in Chinese))
[6] 周 芬，张 力，杜运兴. 含砖粉碎料水泥稳定再生集料的力学性能[J]. 湖南大学学报：自然科学版，2020，47(5)：134–140.(ZHOU Fen，ZHANG Li，DU Yunxing. Mechanical properties of cement stabilized recycled aggregates with crushed brick[J]. Journal of Hunan University：Natural Science，2020，47(5)：134–140.(in Chinese))
[7] 刘维正，曾奕珺，姚永胜，等. 含水率变化下压实路基土动态回弹模量试验研究与预估模型[J]. 岩土工程学报，2019，41(1)：175–183.(LIU Weizheng，ZENG Yijun，YAO Yongsheng，et al. Experimental study and prediction model of dynamic resilient modulus of compacted subgrade soils subjected to moisture variation[J]. Chinese Journal Geotechnical Engineering，2019，41(1)：175–183.(in Chinese))
[8] OLIDID C，HEIN D. Guide for mechanistic-empirical design of new and rehabilitated pavement structures[S]. [S. l.]：Transportation Association of Canada，2004.
[9] 中华人民共和国行业标准编写组. JTG D30—2015 公路路基设计规范[S]. 北京：人民交通出版社，2015. (The Professional Standards Compilation Group of People?s Republic of China. JTG D30—2015 Specifications for design of highway subgrades[S]. Beijing：China Communications Press，2015.(in Chinese))
[10] DIAGNE M，TINJUM J M，NOKKAEW K. The effects of recycled clay brick content on the engineering properties，weathering durability，and resilient modulus of recycled concrete aggregate[J]. Transportation Geotechnics，2015，(3)：15–23.
[11] 肖 杰，马海峰，吴超凡，等. 建筑固废物再生粒料基层混合料的性能研究[J]. 建筑材料学报，2018，21(3)：511–515.(XIAO Jie，MA Haifeng，WU Chaofan，et al. Study on performance of construction and demolition waste recycled aggregate base mixture[J]. Journal of Building Materials，2018，21(3)：511–515.(in Chinese))
[12] SILVA R V，BRITO J，DHIR R，et al. Use of recycled aggregates from construction and demolition waste in geotechnical applications：A literature review[J]. Waste Management，2016，49：131–145.
[13] ARISHA A M，GABR A R，EL-BADAWY S M，et al. Performance Evaluation of Construction and Demolition Waste Materials for Pavement Construction in Egypt[J]. Journal of materials in civil engineering，2018，30(2)：04017270.1–04017270.14.
[14] ARM M. Mechanical properties of residues as unbound road materials[Ph. D. Thesis][D]. Stockholm，Sweden：KTH Royal Institute of Technology，2003.
[15] SAEED A. Performance-related tests of recycled aggregates for use in unbound pavement layers[M]. Washington D C：The National Academies Press，2008：1–66.
[16] 《中国公路学报》编辑部. 中国路基工程学术研究综述?2021[J]. 中国公路学报，2021，34(3)：1–49.(Editorial Department of China Journal of Highway and Transport. Review on China?s subgrade engineering research?2021[J]. China Journal of Highway and Transport，2021，34(3)：1–49.(in Chinese))
[17] 张军辉，丁 乐，张安顺. 建筑垃圾再生料在路基工程中的应用综述[J]. 中国公路学报，2021，34(10)：135–154.(ZHANG Junhui，DING Le，ZHANG Anshun. Application of recycled aggregates from construction and demolition waste in subgrade engineering：A review[J]. China Journal of Highway and Transport，2021，34(10)：135–154.(in Chinese))
[18] 于群丁，王 萌，肖源杰，等. 透水性基床级配碎石填料强度变形特性试验研究[J]. 岩石力学与工程学报，2022，41(3)：614–630. (YU Qunding，WANG Meng，XIAO Yuanjie，et al. Experimental study on strength and deformation characteristics of graded crushed stone filler in permeable subgrade bed[J]. Journal of rock mechanics and Engineering，2022，41(3)：614–630. (in Chinese))
[19] 王蕴嘉，宋二祥. 堆石料颗粒形状对堆积密度及强度影响的离散元分析[J]. 岩土力学，2019，40(6)：2 416–2 426.(WANG Yunjia，SONG Erxiang. Discrete element analysis of influence of rockfill particle shape on bulk density and strength[J]. Rock and Soil Mechanics，2019，40(6)：2 416–2 426.(in Chinese))
[20] QAMHIA II A，CHOW L C，MISHRA D，et al. Dense-graded aggregate base gradation influencing rutting model predictions[J]. Transportation Geotechnics，2017，13：43–51.
[21] ZINGG T. Beitrag Zur schotteranalyse[Ph. D. Thesis][D]. Zurichi：ETH Zurich，1935.
[22] XIAO Y，TUTUMLUER E. Gradation and packing characteristics affecting stability of granular materials：aggregate imaging-based discrete element modeling approach[J]. International Journal of Geomechanics，2017，17(3)：04016064.1–04016064.18.
[23] XIAO Y J. Performance-based evaluation of unbound aggregates affecting mechanistic response and performance of flexible pavements[Ph. D. Thesis][D]. Illinois：University of Illinois at Urbana-Champaign，2014.
[24] 于群丁. 级配碎石振动压实及变形宏细观特征研究[硕士学位论文][D]. 长沙：中南大学，2021.(YU Qunding. Investigating macro-and meso-scale characteristics of vibratory compaction and deformation behavior of permeable unbound aggregate base materials[M. S. Thesis][D]. Changsha：Central South University，2021.(in Chinese))
[25] FULLER W B. Proportioning concrete[C]// A treatise on Concrete，Plain and Reinforced. New York：John Wiley，1905：183–215.
[26] WIG R J，WILLIAMS G M，GATES E R. Strength and other properties of concretes as affected by materials and methods of preparation[R]. Washington：Government Printing Office，1916.
[27] 曹志刚，蔡袁强，徐长节. 移动车辆荷载作用下路面的动力响应[J]. 浙江大学学报：工学版，2009，23(4)：777–781.(CAO Zhigang，CAI Yuanqiang，XU Changjie. Dynamic response of pavement subjected to moving traffic load[J]. Journal of Zhejiang University：Engineering Science，2009，23(4)：777–781.(in Chinese))
[28] 马士杰. 粒料基层设计方法与永久变形控制指标研究[博士学位论文][D]. 南京：东南大学，2015.(MA Shijie. Research on granular base design method and permanent deformation control model[Ph. D. Thesis][D]. Nanjing：Southeast University，2015.(in Chinese))
[29] 张军辉，彭俊辉，郑健龙. 路基土动态回弹模量预估进展与展望[J]. 中国公路学报，2020，33(1)：1–13.(ZHANG Junhui，PENG Junhui，ZHENG Jianlong. Progress and prospect of the prediction model of the resilient modulus of subgrade soils[J]. China Journal of Highway and Transport，2020，33(1)：1–13.(in Chinese))
[30] MONISMITH C L，SEED H B，MITRY F G，et al. Predictions of pavement deflections from laboratory tests[C]// Second International Conference on the Structural Design of Asphalt Pavements. Michigan：[s. n.]，1967：53–88.
[31] MOOSSAZADEH J，WITCZAK M W. Prediction of subgrade moduli for soil that exhibits nonlinear behavior[J]. Transportation Research Record Journal of the Transportation Research Board，1981，810(810)：9–17.
[32] SEED H B，MITRY F G，MONOSMITH C L，et al. Prediction of pavement deflection from laboratory repeated load tests[R]. Washington D.C：National Cooperative Highway Research，1967.
[33] PEZO R. A general method of reporting resilient modulus tests of soils—a pavement engineer?s point of view[C]// Transportation Research Board，72nd Annual Meeting，National Research Council. Washington D.C，1993：12–14.
[34] UZAN J. Characterization of granular material[J]. Transportation Research Record，1985，1022：52–59.
[35] LI D，SELIG E T. Resilient modulus for fine-grained subgrade soils[J]. Journal of Geotechnical Engineering，1994，120(6)：939–957.
[36] PEREZ-GARCIA N，FREDLUND D，GARNICA-ANGUAS P，et al. A model to predict changes in resilient modulus resulting from wetting and drying[J]. Infraestructura Vial，2015，17(30)：23–30.
[37] 谭忆秋，傅锡光，马韶军，等. 基于无约束共振法沥青混合料动态模量试验研究[J]. 土木工程学报，2015，48(12)：116–122.(TAN Yiqiu，FU Xiguang，MA Shaojun，et al. Experimental study on dynamic modulus of asphalt mixture based on free-free resonant test[J]. China Civil Engineering Journal，2015，48(12)：116–122.(in Chinese))
[38] TUTUMLUER E，MISHRA D，BUTT A A. Characterization of Illinois aggregates for subgrade replacement and subbase[R]. Illinois：Civil Engineering Studies Illinois Center for Transportation，2009.
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2022, Vol. 41 
