|
|
|
| Large dynamic triaxial test study on reinforcement mechanisms of reinforced construction waste |
| LI Lihua1，QIN Langling1，XIAO Henglin1，HU Zhi1，PEI Yaoyao1，TONG Jun2#br# |
(1. School of Civil Engineering，Architecture and Environment，Hubei University of Technology，Wuhan，Hubei 430068，China；2. Changjiang River Scientific Research Institute，Wuhan，Hubei 430010，China)
|
|
|
|
Abstract A series of large dynamic triaxial tests are performed mainly on construction waste. The accumulative axial deformation of construction waste and sand，excess pore water pressure，dynamic stress-strain and dynamic elastic modulus with different types of reinforcement are investigated，and the reinforcement mechanism of construction waste reinforced with tires is analyzed. The experimental results demonstrate that cycle number and dynamic stress have a significant effect on dynamic behaviors of the filler. The accumulative axial deformation obtained in the tests is in line with the shakedown theory，and the load capacity of construction waste is higher than that of sand in the same shakedown range. Within 10 cycles，the accumulative axial deformation of construction waste is suitable for the hyperbolic model，while it is suitable for the modified Monismith model after 10 cycles. When the dynamic stress is higher than the critical dynamic stress，the excess pore water pressure has violent fluctuations. The closer the dynamic stress to the critical dynamic stress，the more obvious the fluctuation phenomenon is. As the cycle number increases，the hysteresis loop area gradually decreases while the dynamic elastic modulus of construction waste gradually increases. The hoop stress and friction resistance provided by the tire sidewall can enhance the particle-tire-particle interaction，which can reduce the horizontal and vertical developments of cracks. It is also revealed that the reinforcement effect of construction waste with the top tire is better than that of the bottom tire，and the effect of biaxial geogrid is not better than that of waste tire.
|
|
|
|
|
|
[1] 袁晓兰. 关于固体废弃物污染现状与治理的研究[J]. 环球人文地理，2017，(6)：222.(YUAN Xiaolan. Research on the status and treatment of solid waste pollution[J]. Cultural Geography，2017，(6)：222.(in Chinese))
[2] 李 行，吴超凡，万 暑，等. 建筑垃圾在路基回填材料中的使用性能研究[J]. 中外公路，2019，39(1)：253–256.(LI Hang，WU Chaofan，WAN Shu，et al. Study on performance of construction waste in subgrade backfill[J]. Journal of China Foreign Highway，2019，39(1)：253–256.(in Chinese))
[3] 曾灿桂，刘 权，晋勇强. 建筑垃圾在高速公路中的利用[J]. 华东公路，2014，(6)：58–60.(ZENG Cangui，LIU Quan，JIN Yongqiang. Utilization of construction waste on highways[J]. East China Highway，2014，(6)：58–60.(in Chinese))
[4] ZHAO W，LEEFTINK R B，ROTTER V S. Evaluation of the economic feasibility for the recycling of construction and demolition waste in China-The case of Chongqing[J]. Resources Conservation and Recycling，2010，54(6)：377–389.
[5] 孙 楠. 城市建筑垃圾的循环再利用研究[J]. 延安大学学报：自然科学版，2012，31(3)：81–83.(SUN Nan. Research on recycling of urban construction waste[J]. Journal of Yanan University：Natural Science，2012，31(3)：81–83.(in Chinese))
[6] TAVIRA J，JIMÉNEZ J R，AYUSO J，et al. Recycling screening waste and recycled mixed aggregates from construction and demolition waste in paved bike lanes[J]. Journal of Cleaner Production，2018，190：211–220.
[7] 姚志雄. 建筑渣土填料CBR试验研究及强度机制探讨[J]. 公路，2013，(4)：112–116.(YAO Zhixiong. Research on CBR test of construction waste and discussion of strength mechanism[J]. Highway，2013，(4)：112–116.(in Chinese))
[8] SANTOS E C G，VILAR O M. Use of recycled construction and demolition wastes(RCDW) as backfill of reinforced soil structures[C]// Proceedings of the Fourth European Geosynthetics Conference. Scotland：[s. n.]，2008：199.
[9] VIEIRA C S，PEREIRA P M. Use of mixed construction and demolition recycled materials in geosynthetic reinforced embankments[J]. Indian Geotechnical Journal，2018，48：279–292.
[10] VIEIRA C S，PEREIRA P M，DE LURDES LOPES M. Recycled construction and demolition wastes as filling material for geosynthetic reinforced structures. Interface properties[J]. Journal of Cleaner Production，2016，124：299–311.
[11] VIEIRA C S. Valorization of fine-grain construction and demolition (C&D) waste in geosynthetic reinforced structures[J]. Waste and Biomass Valorization，2018，11(7)：1 615–1 626.
[12] ARULRAJAH A，RAHMAN M A，PIRATHEEPAN J，et al. Evaluation of interface shear strength properties of geogrid-reinforced construction and demolition materials using a modified large-scale direct shear testing apparatus[J]. Journal of Materials in Civil Engineering，2014，26(5)：974–982.
[13] ARULRAJAH A，RAHMAN M A，PIRATHEEPAN J，et al. Interface shear strength testing of geogrid-reinforced construction and demolition materials[J]. Advances in Civil Engineering Materials，2013，2(1)：189–200.
[14] RAHMAN M A，ARULRAJAH A，PIRATHEEPAN J，et al. Resilient modulus and permanent deformation responses of geogrid-reinforced construction and demolition materials[J]. Journal of Materials in Civil Engineering，2014，26(3)：512–519.
[15] 再 协. 废旧轮胎需要真正的绿色转身[J]. 中国资源综合利用，2016，34(8)：46.(ZAI Xie. Recycling of used tires[J]. China Resources Comprehensive Utilization，2016，34(8)：46.(in Chinese))
[16] SABERIAN M，KHOTBEHSARA M M，JAHANDARI S，et al. Experimental and phenomenological study of the effects of adding shredded tire chips on geotechnical properties of peat[J]. International Journal of Geotechnical Engineering，2018，12(4)：347–356.
[17] KIM Y T，KANG H S. Engineering characteristics of rubber-added lightweight soil as a flowable backfill material[J]. Journal of Materials in Civil Engineering，2011，23(9)：1 289–1 294.
[18] 李丽华，石安宁，肖衡林，等. 加筋土挡墙静载模型试验及其力学性能研究[J]. 岩土力学，2018，39(12)：4 360–4 368.(LI Lihua，SHI Anning，XIAO Henglin，et al. Model test and mechanical properties study of reinforced earth retaining wall[J]. Rock and Soil Mechanics，2018，39(12)：4 360–4 368.(in Chinese))
[19] LI L H，CHEN Y J，FERREIRA P M V，et al. Experimental investigations on the pull-out behavior of tire strips reinforced sands[J]. Materials，2017，10(7)：707.
[20] SABERIAN M，LI J，NGUYEN B，et al. Permanent deformation behaviour of pavement base and subbase containing recycle concrete aggregate，coarse and fifine crumb rubber[J]. Construction and Building Materials，2018，178：51–58.
[21] SABERIAN M，LI J. Investigation of the mechanical properties and carbonation of construction and demolition materials together with rubber[J]. Journal of Cleaner Production，2018，202：553–560.
[22] 矫 伟. 建筑垃圾处理技术与移动式破碎装备解析[J]. 中国设备工程，2017，(3)：91–92.(JIAO Wei. Analysis of construction waste treatment technology and mobile crushing equipment[J]. China Plant Engineering，2017，(3)：91–92.(in Chinese))
[23] WERKMEISTER S，DAWSON A R，WELLNER F. Permanent deformation behavior of granular materials and the shakedown concept[J]. Transportation Research Record，2001，1757(1)：75–81.
[24] QIAN J G，WANG Y G，YIN Z Y，et al. Experimental identification of plastic shakedown behavior of saturated clay subjected to traffic loading with principal stress rotation[J]. Engineering Geology，2016，214：29–42.
[25] 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，2019，198：751–761.
[26] WERKMEISTER S. Permanent deformation behaviour of unbound granular materials in pavement constructions[M. S. Thesis][D]. Dresden，Germany：University of Technology，2003.
[27] 周文权，冷伍明，刘文劼，等. 低围压循环荷载作用下饱和粗粒土的动力特性与骨干曲线模型研究[J]. 岩土力学，2016，37(2)：415–423.(ZHOU Wenquan，LENG Wuming，LIU Wenjie，et al. Dynamic behavior and backbone curve model of saturated coarse-grained soil under cyclic loading and low confining pressure[J]. Rock and Soil Mechanics，2016，37(2)：415–423.(in Chinese))
[28] 宫全美，廖彩凤，周顺华，等. 地铁行车荷载作用下地基土动孔隙水压力实验研究[J]. 岩石力学与工程学报，2001，20(增1)：1 154–1 157.(GONG Quanmei，LIAO Caifeng，ZHOU Shunhua，et al. Testing study of dynamic pore water pressure under train loading[J]. Chinese Journal of Rock Mechanics and Engineering，2001，20(Supp.1)：1 154–1 157.(in Chinese))
[29] 雷华阳，姜 岩，陆培毅，等. 交通荷载作用下结构性软土动应力–动应变关系试验研究[J]. 岩石力学与工程学报，2008，27(增1)：3 052–3 057.(LEI Huayang，JIANG Yan，LU Peiyi，et al. Experimental study of dynamic stress-strain relation of structural soft soil under traffic load[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(Supp.1)：3 052–3 057.(in Chinese))
[30] 马少坤，王 博，刘 莹，等. 南宁地铁区域饱和圆砾土大型动三轴试验研究[J]. 岩土工程学报，2019，41(1)：168–174.(MA Shaokun，WANG Bo，LIU Yin，et al. Large-scale dynamic triaxial tests on saturated gravel soil in Nanning metro area[J]. Chinese Journal of Geotechnical Engineering，2019，41(1)：168–174.(in Chinese))
[31] 谢定义. 土动力学[M]. 北京：高等教育出版社，2011：172–177.(XIE Dingyi. Soil dynamics[M]. Beijing：High Education Press，2011：172–177.(in Chinese))
[32] MOAYED R Z，ALIBOLANDI M. Effect of geotextile reinforcement on cyclic undrained behavior of sand[J]. Soil Dynamics and Earthquake Engineering，2018，104：395–402.
[33] WIACEK J，PARAFINIUK P，STASIAK M. Effect of particle size ratio and contribution of particle size fractions on micromechanics of uniaxially compressed binary sphere mixtures[J]. Granular Matter，2017，19：34.
[34] LI B，WANG Y，JIN Q B，et al. Liquefaction characteristics of recycled concrete aggregates[J]. Soil Dynamics and Earthquake Engineering，2019，120：85–96.
[35] 杨德生，张孟喜，崔振清，等. 含建筑垃圾土的物理力学特性[J]. 上海大学学报，2011，17(6)：792–798.(YANG Desheng，ZHANG Mengxi，CUI Zhenqing，et al. Physical and Mechanical Behavior of Soil with Construction Waste[J]. Journal of Shanghai University，2011，17(6)：792–798.(in Chinese))
[36] MEHRJARDI G T，MOTARJEMI F. Interfacial properties of Geocell-reinforced granular soils[J]. Geotextiles and Geomembranes，2018，46(4)：384–395. |
|
|
|
2020, Vol. 39 
