|
|
Direct shear creep tests on recycled asphalt pavement material with consideration of compaction temperature effect |
Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
|
|
Abstract To investigate the creep behavior of recycled asphalt pavement (RAP)as backfill material at different construction temperatures,with considerations of viscosity and temperature sensitivity of asphalt, the direct shear and direct shear creep tests on RAP specimens were conducted at 0℃ and 50℃.The direct shear test results show that at given compaction temperature, the shear strength is increased with increasing of vertical stress, and the shear strain corresponding to the maximum shear stress is increasesd.The shear strength is increased with the increasing of compaction temperature. The direct shear creep tests results show that at given shear stress ratio, the time to creep rupture is increased with the increasing of compaction temperature. Under the same compaction temperature, the time to creep rupture is increased with the increasing of vertical stress. The critical shear stress ratio is increased linearly with the increasing of compaction temperature. The modified creep model is proposed with considering the effect of compaction temperature by revealing the quantitative variation law for each parameter of the empirical three-parameter creep model. The construction of RAP as backfills is recommended in the summer to achieve high compaction temperature and increase the critical stress ratio for improving creep resistance.
|
Received: 08 September 2018
|
|
|
|
[1] |
王松跟. 从数据看沥青路面材料的循环利用\[J\]. 养护与管理, 2014(7): 56-65.
|
|
WANG S G. Recycling of asphalt pavement materials from data \[J\].Maintenance and Management,2014(7): 56-65. (in Chinese)
|
[2] |
HANSEN K R, COPELAND A. Annual asphalt pavement industry survey on recycled materials and warm-mix asphalt usage: 2009—2012\[R\]. Lanham, MD,USA:National Asphalt Pavement Association,2014.
|
[3] |
黄康旭, 梁星敏, 徐波. RAP 掺量对泡沫温拌再生沥青混合料路用性能的影响\[J\]. 材料科学与工程学报, 2016, 34(5):794-797.
|
|
HUANG K X, LIANG X M, XU B. Influences of RAP dosage on road performances of foamedwarm mix reclaimed asphalt\[J\]. Journal of Materials Science & Engineering, 2016, 34(5):794-797. (in Chinese)
|
[4] |
娄深鑫. 热再生沥青混合料高温累积变形及荷载敏感性研究\[D\]. 南京:东南大学, 2016.
|
[5] |
潘勤学, 郑健龙, 杨博,等. 沥青路面蠕变响应现场预估方法与试验\[J\]. 中国公路学报,2017, 30(9):10-17.
|
|
PAN Q X, ZHENG J L, YANG B, et al. Field prediction method and experiment on creepresponse of asphalt pavement\[J\].China J Highw Transp, 2017, 30(9):10-17. (in Chinese)
|
[6] |
徐波, 徐佳骏,张娜. 泡沫温拌再生沥青高低温性能研究\[J\]. 河北工程大学学报(自然科学版), 2017, 34(1):21-23.
|
|
XU B, XU J J, ZHANG N. Investigation on high and low temperature properties of foamedwarm-mix recycled asphalt\[J\].Journal of Hebei University of Engineering (Natural Science Edition), 2017, 34(1):21-23. (in Chinese)
|
[7] |
SOLEIMANBEIGI A, EDIL T B. Thermal conditioning to improve geotechnical properties of recycled asphalt pavements\[J\]. Geotechnical Testing Journal, 2015, 38(4): 1-12.
|
[8] |
VIYANANT C, RATHJE E M, RAUCH A F. Creep of compacted recycled asphalt pavement\[J\]. Canadian Geotechnical Journal, 2007, 44:687-697.
|
[9] |
COSENTINO P J, BLEAKLEY A M, SAJJADI A M, et al. Evaluating laboratory compaction techniques of reclaimed asphalt pavement\[J\]. Transportation Research Record: Journal of the Transportation Research Board, 2013, 2335(1):89-98.
|
[10] |
MOHAMMAD L N, ABU-FARSAKH M Y, WU Z, et al. Louisiana experience with foamed recycled asphalt pavement base materials\[J\]. Transportation Research Record: Journal of the Transportation Research Board, 2003, 1832(1):17-24.
|
[11] |
RATHJE E M, RAUCH A F, TREJO D, et al. Evaluation of crushed concrete and recycled asphalt pavement as backfill for mechanically stabilized earth walls:FHWA Final Rep. No. 0-4177-3\[R\].Washington, DC,USA:Federal Highway Administration,2006.
|
[12] |
BLEAKLEY A M, COSENTINO P J, KALAJIAN E H, et al. Strength and creep characteristics of reclaimed asphalt pavement-sand blend backfill in mechanically stabilized earth walls\[J\]. Transportation Research Record: Journal of the Transportation Research Board, 2014, 2462(1):18-27.
|
[13] |
YIN J, SOLEIMANBEIGI A, LIKOS W J, et al. Effects of temperature on creep behavior of compacted recycled asphalt pavement\[J\]. Journal of Geotechnical & Geoenvironmental Engineering, 2016, 143(4):06016028.
|
[14] |
殷杰,涂刚,王星光,等. 废旧回收沥青路面材料的直剪蠕变试验\[J\]. 江苏大学学报(自然科学版), 2019, 40(2): 231-236.
|
|
YIN J, TU G, WANG X G, et al.Direct shear creep tests on recycled asphalt pavement material\[J\]. Journal of Jiangsu University(Natural Science Edition), 2019, 40(2): 231-236. (in Chinese)
|
[15] |
MITCHELL J K, SOGA K. Fundamentals of Soil Beha-vior\[M\].3rd ed.New York: John Wiley & Sons,Inc, 2005.
|
[16] |
FINN W D L, SNEAD D. Creep and creep rupture of an undisturbedsensitive clay\[C\]∥Proceedings of the 8th International Conference on SoilMechanics and Foundation Engineering.Moscow, RUS: USSR National Society for Soil Mechanicsand Foundation Engineering, 1973,1:135-142.
|
|
|
|