建筑固废再生填料累积变形及临界动应力试验研究

doi:10.13722/j.cnki.jrme.2022.1340

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (979 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要建筑固废用作粒料基层填料的资源化回收利用可从环境、经济和社会等各方面受益。重复交通荷载作用下粒料基层永久变形的逐渐累积可导致车辙和开裂等路面病害，从而降低其使用寿命。通过循环加载三轴试验研究建筑固废再生粗粒土填料在不同应力状态下的塑性变形特性，并通过设计5种不同级配的试样研究颗粒破碎状态对塑性变形和临界动应力的影响规律；进而基于实测数据建立可综合考虑颗粒破碎状态和应力水平的累积塑性应变和临界动应力预测模型。试验结果表明，再生骨料的轴向累积应变随围压的增大或动应力幅值的降低而逐渐减小；颗粒破碎程度的增大削弱了试样抵抗塑性变形的能力。所建立的累积塑性应变预测模型克服了不同级配条件下累积塑性应变计算模型参数的分散性；基于安定理论提出的临界动应力经验公式为合理评估交通荷载作用下再生粗粒土填料的动力稳定性提供了理论依据。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	孔坤锋1
	陈锋1
	肖源杰2
	3
	姜钰2
	Umar Faruk Aminu2
	陈宇亮4
	李志勇4

关键词 ：道路工程, 累积塑性应变, 循环加载三轴试验, 建筑固废再生填料, 临界动应力, 颗粒破碎

Abstract：Recycling construction and demolition waste(CDW) in the construction of transportation infrastructure can benefit from various environmental，economic and social aspects. The gradual accumulation of permanent deformation of the granular structural layer under traffic loading may lead to rutting，cracking，and other diseases of the pavement，thus reducing its service life. In this paper，the plastic deformation characteristics of coarse-grained soil filler recycled from CDW under different stress states were studied by repeated-load triaxial tests，and the influence law of particle breakage state on plastic deformation and critical dynamic stress was investigated by designing five different graduation specimens. The prediction models of accumulated plastic strain and critical dynamic stress were established based on the measured data，which can comprehensively consider the particle breakage state and stress level. The test results show that the axial accumulated strain of recycled aggregates gradually decreases with the increase of confining pressure or the decrease of dynamic stress amplitude；the increase of particle breakage weakens the ability of specimens to resist plastic deformation. The established accumulated plastic strain prediction model overcomes the dispersion of the parameters of the accumulated plastic strain calculation model under different gradation conditions. The empirical equation for the critical dynamic stress based on the shake-down theory provides a theoretical basis for the reasonable assessment of the dynamic stability of the recycled coarse-grained soil filler under the action of traffic load.

Key words： road engineering accumulated plastic strain repeated-load triaxial tests unbound aggregates recycled from CDW critical dynamic stress particle breakage

引用本文:

孔坤锋1，陈锋1，肖源杰2，3，姜钰2，Umar Faruk Aminu2，陈宇亮4，李志勇4. 建筑固废再生填料累积变形及临界动应力试验研究[J]. 岩石力学与工程学报, 2023, 42(11): 2820-2831.
KONG Kunfeng1，CHEN Feng1，XIAO Yuanjie2，3，JIANG Yu2，Umar Faruk Aminu2，CHEN Yuliang4，LI Zhiyong4. Experimental investigation of accumulated plastic strain and critical dynamic stress of unbound aggregates recycled from construction and demolition waste. , 2023, 42(11): 2820-2831.

链接本文:

http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2022.1340 或 http://rockmech.whrsm.ac.cn/CN/Y2023/V42/I11/2820

[10]	CERNI G，CARDONE F，BOCCI M. Permanent deformation behaviour of unbound recycled mixtures[J]. Construction and Building Materials，2012，37：573-580.
[19]	FULLER W B. Proportioning concrete：A treatise on concrete，plain and reinforced[M]. New York：John Wiley，1905：183-215.
[2]	SHI X，MUKHOPADHYAY A，D ZOLLINGER，et al. Economic input-output life cycle assessment of concrete pavement containing recycled concrete aggregate[J]. Journal of Cleaner Production，2019，225(JUL.10)：414-425.
[3]	VIEIRA C S，PEREIRA P M. Use of recycled construction and demolition materials in geotechnical applications：A review[J]. Resources Conservation and Recycling，2015，103：192-204.
[6]	JAYAKODY S，GALLAGE C，RAMANUJAM J. Effects of reclaimed asphalt materials on geotechnical characteristics of recycled concrete aggregates as a pavement material[J]. Road Materials and Pavement Design，2017，20(4)：1-19.
[8]	ZHANG J，GU F，ZHANG Y. Use of building-related construction and demolition wastes in highway embankment：Laboratory and field evaluations[J]. Journal of Cleaner Production，2019，230(SEP.1)： 1 051-1 060.
[12]	ARULRAJAH A，PIRATHEEPAN J，AATHEESAN T，et al. Geotechnical properties of recycled crushed brick in pavement applications[J]. Journal of Materials in Civil Engineering，2011，23(10)：1 444-1 452.
[13]	ARULRAJAH A，PIRATHEEPAN J，DISFANI M M，et al. Geotechnical and geoenvironmental properties of recycled construction and demolition materials in pavement subbase applications[J]. Journal of Materials in Civil Engineering，2013，25(8)：1 077-1 088.
[16]	CHEN W B，FENG W Q，YIN J H，et al. Characterization of permanent axial strain of granular materials subjected to cyclic loading based on shakedown theory[J]. Construction and Building Materials，2018，198(FEB.20)：751-761.
[18]	肖源杰，孔坤锋，姜钰，等. 建筑固废再生粒料基层填料动回弹模量特性及统一预估模型研究[J]. 岩石力学与工程学报，2022，41(11)：2 337-2 352.(XIAO Yuanjie，KONG Kunfeng，JIANG Yu，et al. Investigating resilient modulus characteristics and developing unified prediction model of unbound aggregate base materials recycled from construction and demolition waste[J]. Chinese Journal of Rock Mechanics and Engineering，2022，41(11)：2 337-2 352.(in Chinese))
[20]	李国强，邓学钧. 集料的分形级配研究[J]. 重庆交通学院学报，1995，(2)：38-43.(LI Guoqiang，DENG Xuejun. On fractal gradation of aggregates[J]. Journal of Chongqing Jiaotong Institute，1995，(2)：38-43.(in Chinese))
[22]	XIAO Y，TUTUMLUER E，MISHRA D. Performance evaluations of unbound aggregate permanent deformation models for various aggregate physical properties[J]. Transportation Research Record，2015，2525(1)：20-30.
[4]	BERNARDO M，GOMES M C，BRITO J D. Demolition waste generation for development of a regional management chain model[J]. Waste Manag，2016，49：156-169.
[14]	SHARP R. Shakedown analyses and the design of pavement under moving surface load[Ph. D. Thesis][D]. Sydney，Australia：University of Sydney，1983.
[23]	MONISMITH C L，OGAWA N，FREEME C R. Permanent deformation characteristics of subgrade soils due to repeated loading[J]. Transportation Research Record，1975，537：1-17.
[24]	WERKMEISTER S. Permanent deformation behavior of unbound granular materials in pavement constructions[Ph. D. Thesis][D]. Dresden，Germany：University of Technology，2003.
[1]	KELLY L. State DOT environmental and economic benefits of recycled material utilization in highway pavements[M. S. Thesis][D]. Wisconsin：University of Wisconsin-Madison，2016.
[11]	BENNERT T，PAPP W，MAHER A，et al. Utilization of construction and demolition debris under traffic-type loading in base and subbase applications[J]. Transportation Research Record，2000，1714(1)：33-39.
[21]	张吉庆. 路用粒料类材料安定行为及路面结构安定性分析研究[博士学位论文][D]. 广州：华南理工大学，2012.(ZHANG Jiqing. Study on shakedown behavior of granular material used in pavement and shakedown analysis of pavement structures[Ph. D. Thesis][D]. Guangzhou：South China University of Technology，2012.(in Chinese))
[9]	CERNI G，CARDONE F，VIRGILI A，et al. Characterisation of permanent deformation behaviour of unbound granular materials under repeated triaxial loading[J]. Construction and Building Materials，2012，28(1)：79-87.
[7]	ARULRAJAH A，PIRATHEEPAN J，DISFANI M M. Reclaimed asphalt pavement and recycled concrete aggregate blends in pavement subbases：laboratory and field evaluation[J]. Journal of Materials in Civil Engineering，2014，26(2)：349-357.
[17]	XIAO Y，ZHENG K，CHEN L，et al. Shakedown analysis of cyclic plastic deformation characteristics of unbound granular materials under moving wheel loads[J]. Construction and Building Materials，2018，167：457-472.
[5]	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))
[15]	WERKMEISTER S，DAWSON A R，WELLNER F. Permanent deformation behavior of granular materials and the shakedown concept[J]. Transportation Research Record Journal of the Transportation Research Board，2001，1757(1)：75-81.