[1]孙璐,任皎龙.建筑拆除废弃物水泥稳定碎石力学特性及其设计参数[J].东南大学学报(自然科学版),2014,44(5):1052-1056.[doi:10.3969/j.issn.1001-0505.2014.05.031]
　Sun Lu,Ren Jiaolong.Mechanical characteristics and parameter design of cement stabilized macadam containing building demolition waste[J].Journal of Southeast University (Natural Science Edition),2014,44(5):1052-1056.[doi:10.3969/j.issn.1001-0505.2014.05.031]
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建筑拆除废弃物水泥稳定碎石力学特性及其设计参数()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第5期
页码:
1052-1056
栏目:
交通运输工程
出版日期:
2014-09-20

文章信息/Info

Title:
Mechanical characteristics and parameter design of cement stabilized macadam containing building demolition waste
作者:
孙璐1; 2; 任皎龙1
1东南大学交通学院, 南京 210096; 2美国Catholic大学土木工程系, 华盛顿特区 20064
Author(s):
Sun Lu1; 2;  Ren Jiaolong1
1School of Transportation Engineering, Southeast University, Nanjing 210096, China
2Department of Civil Engineering, The Catholic University of America, Washington DC 20064, USA
关键词:
道路工程;  建筑拆除废弃物;  水泥稳定碎石;  力学参数;  预估模型
Keywords:
road engineering;  building demolition waste;  cement stabilized macadam;  mechanical parameter;  prediction model
分类号:
U414
DOI:
10.3969/j.issn.1001-0505.2014.05.031
摘要:
为了深入分析建筑拆除废弃物应用于公路工程中的可行性,通过室内试验揭示了龄期、新集料掺量等因素对建筑拆除废弃物水泥稳定碎石(CCWM)无侧限抗压强度、劈裂强度和抗压回弹模量等力学参数的影响规律,建立了各力学参数的预估模型,提出了CCWM各力学参数的推荐参考值.结果表明:CCWM无侧限抗压强度、劈裂强度和抗压回弹模量随着龄期和新料掺量的增加而增加;新集料掺量每提高20%,CCWM的无侧限抗压强度提高8%~90%,劈裂强度提高5%~75%,抗压回弹模量提高2%~21%;建立的预估模型能够较好地预测CCWM各力学参数变化规律;CCWM无侧限抗压强度和劈裂强度的推荐参考值分别为2.7~5.5和0.59~1.06 MPa,用于弯沉计算和拉应力计算的抗压回弹模量推荐参考值分别为1 300~1 900和1 700~ 2 200 MPa,可供路面设计与施工参考.
Abstract:
In order to deeply analyze the feasibility of the application of building demolition waste in road engineering, the influence laws of the age and the amount of virgin aggregates on the mechanical parameters including the unconfined compressive strength, the cleavage strength and the compressive resilient modulus of cement stabilized macadam containing building demolition waste(CCWM)were revealed by laboratory tests. The prediction models of CCWM mechanical parameters were established. And the values of these mechanical parameters were recommended. The results show that the unconfined compressive strength, the cleavage strength and the compressive resilient modulus of CCWM increase with the increase of the age and the amount of virgin aggregates. When the amount of virgin aggregates increases by 20%, these parameters increase by 8% to 90%, 5% to 75% and 2% to 21%, respectively. The established prediction models can predict the change laws of these mechanical parameters well. The recommended values of the unconfined compressive strength and the cleavage strength are 2.7 to 5.5 and 0.59 to 1.06 MPa, respectively. The compressive resilient modulus used in the calculation of deflection and tensile stress are recommended as 1 300 to 1 900 and 1 700 to 2 200 MPa, respectively. These can be used as a reference for pavement design and construction.

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备注/Memo

备注/Memo:
收稿日期: 2013-12-25.
作者简介: 孙璐(1972—),男,博士,教授,博士生导师,sunl@cua.edu.
基金项目: 交通运输部西部交通建设科技资助项目(0901005C)、美国国家自然科学基金资助项目(CMMI-0644552)、安徽省交通科技资助项目(2006200YJGL0002).
引用本文: 孙璐,任皎龙.建筑拆除废弃物水泥稳定碎石力学特性及其设计参数[J].东南大学学报:自然科学版,2014,44(5):1052-1056. [doi:10.3969/j.issn.1001-0505.2014.05.031]
更新日期/Last Update: 2014-09-20