2022年 02期

温度对可回收沥青路面填料蠕变特性的影响

Effect of Temperature on Creep Characteristics of Recycled Asphalt Pavement Backfills


摘要(Abstract):

为了研究温度对可回收沥青路面填料蠕变特性的影响,开展温度分别为0、 20、 35℃的直剪试验及直剪蠕变试验,并通过修正土的三参数经验模型,建立考虑温度影响的可回收沥青路面挡墙填料蠕变方程。结果表明:可回收沥青路面填料的黏聚力随着试验温度的升高而线性减小,当竖向应力相同时,试验温度越高,则可回收沥青路面填料抗剪强度越小;当蠕变时间和剪应力比相同时,试验温度高的剪应变随时间的对数变化曲线均位于试验温度低的曲线上方;在较大剪应力比和较高试验温度工况下,可回收沥青路面试样容易发生蠕变破坏,表现为剪应变和蠕变速率快速增大。

关键词(KeyWords): 加筋材料;可回收沥青路面;蠕变特性;直剪蠕变试验;温度;填料

基金项目(Foundation): 国家自然科学基金项目(51978315)

作者(Author): 殷杰,余锐锋,汤勇,胡明明

DOI: 10.13349/j.cnki.jdxbn.20211114.001

参考文献(References):

[1] 马细勇,谢和平.公路沥青路面施工存在的质量问题及解决措施[J].工程技术研究,2019,4(18):153-154.

[2] 张晶,孙英杰,杨玉飞,等.固体废物沥青路面利用的环境风险评估[J].环境工程技术学报,2017,7(6):746-753.

[3] THAKUR J K,HAN J.Recent development of recycled asphalt pavement (RAP) bases treated for roadway applications[J].Transportation Infrastructure Geotechnology,2015,2(2):68-86.

[4] 王真.沥青再生的升级之路[J].中国公路,2019(7):33-36.

[5] 王松根.从数据看沥青路面材料的循环利用[C]//梅君.养护与管理2014年第7期(总第41期).北京:中国公路学会养护与管理分会,2014:56-65.

[6] 李清富,裴俊杰,吕小永,等.废旧沥青路面再生利用研究现状与进展[J].河南科技,2019(20):108-111.

[7] HOYOS L R,PUPPALA A J,ORDONEZ C A.Characterization of cement-fiber-treated reclaimed asphalt pavement aggregates:preliminary investigation[J].Journal of Materials in Civil Engineering,2011,23(7):977-989.

[8] 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.

[9] VIYANANT C,RATHJE E M,RAUCH A F.Creep of compacted recycled asphalt pavement[J].Canadian Geotechnical Journal,2007,44(6):687-697.

[10] ARULRAJAH A,DISFANI M M,HORPIBULSUK S,et al.Physical properties and shear strength responses of recycled construction and demolition materials in unbound pavement base/subbase applications[J].Construction and Building Materials,2014,58:245-257.

[11] SOLEIMANBEIGI A,EDIL T B,BENSON C H.Creep response of recycled asphalt shingles[J].Canadian Geotechnical Journal,2014,51(1):103-114.

[12] 张静玉.废旧沥青路面混合料的力学特性试验研究[D].镇江:江苏科技大学,2018.

[13] SOLEIMANBEIGI A,EDIL T B.Compressibility of recycled materials for use as highway embankment fill[J].Journal of Geotechnical and Geoenvironmental Engineering,2015,141(5):04015011.

[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.

[15] 林乃山.宁波轻轨沿线不同深度土体温度变化规律观测研究[J].中国勘察设计,2013(5):82-85.

[16] 商允虎,牛富俊,刘明浩,等.多年冻土区桥梁工程桩基础服役期温度场研究[J].岩石力学与工程学报,2017,36(9):2313-2323.

[17] SIVAKUGAN N,DAS B M.Geotechnical engineering:a practical problem solving approach[M].Plantation:J.Ross Publishing,2010.

[18] SOLEIMANBEIGI A,EDIL T B,BENSON C H.Creep response of recycled asphalt shingles[J].Canadian Geotechnical Journal,2013,51(1):103-114.

[19] KUHN M R,MITCHELL J K.New perspectives on soil creep[J].Journal of Geotechnical Engineering,1993,119(3):507-524.

[20] SINGH A,MITCHELL J K.General stress-strain-time function for soils[J].Journal of the Soil Mechanics and Foundations Division,1968,94(1):21-46.