炉渣沥青混合料路用性能与浸出特性试验研究
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摘要
在AC-20沥青混合料中,以不同掺量、不同粒径的生活垃圾焚烧炉渣集料替代天然集料,用马歇尔设计方法进行配合比设计,并进行路用性能检验及浸出特性研究,分析炉渣集料的粒径、掺量对混合料路用性能的影响,同时研究混合料对炉渣集料溶出物的稳定作用.结果表明:混合料的动稳定度随着炉渣集料掺量的提高先减后增,随着炉渣集料粒径增大而减小;混合料低温弯拉应变随炉渣集料掺量的提高先增后减,10%掺量的0～4.75mm粒径炉渣集料对混合料低温性能提升明显;0%～10%掺量的0～4.75mm粒径炉渣集料能提高混合料的水稳定性能;随炉渣集料掺量减少、粒径增大,混合料对炉渣集料溶出物的稳定效果增强.综合试验结果,推荐用于AC-20沥青混合料的炉渣集料适宜粒径为0～4.75mm,适宜掺量为10%.
AC-20 asphalt mixture containing different contents and different particle sizes of municipal solid waste incineration bottom ash aggregate(BAA) was designed by Marshall test method. The effects of BAA contents and particle sizes on pavement performance of asphalt mixture was analyzed. The stabilization of asphalt mixture on BAA was also evaluated based on the leaching test. Results show the dynamic stability of mixture initially improves with the increase of BAA content and then reduces gradually, and it also reduces with the increase in BAA particle sizes. The maximum bending strain of mixture shows a significant increasing trend initially with the increase in BAA content and then decreases gradually. The effect of 0-4.75 mm BAA with 10% content on low-temperature performance is better. The water stability of asphalt mixture can be improved with small content(0%-10%) and small particle sizes(0-4.75 mm). Furthermore, the stability of asphalt mixture on BAA soluble substance improves with an increase of BAA particle sizes, and a decrease of BAA content. According to test results, it is recommended that the suitable particle sizes and contents of BAA are 0-4.75 mm and 10% for using in asphalt mixture.
AC-20 asphalt mixture containing different contents and different particle sizes of municipal solid waste incineration bottom ash aggregate(BAA) was designed by Marshall test method. The effects of BAA contents and particle sizes on pavement performance of asphalt mixture was analyzed. The stabilization of asphalt mixture on BAA was also evaluated based on the leaching test. Results show the dynamic stability of mixture initially improves with the increase of BAA content and then reduces gradually, and it also reduces with the increase in BAA particle sizes. The maximum bending strain of mixture shows a significant increasing trend initially with the increase in BAA content and then decreases gradually. The effect of 0-4.75 mm BAA with 10% content on low-temperature performance is better. The water stability of asphalt mixture can be improved with small content(0%-10%) and small particle sizes(0-4.75 mm). Furthermore, the stability of asphalt mixture on BAA soluble substance improves with an increase of BAA particle sizes, and a decrease of BAA content. According to test results, it is recommended that the suitable particle sizes and contents of BAA are 0-4.75 mm and 10% for using in asphalt mixture.
引文
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[8] HUANG C,CHIU C,LI K,et al.Physical and environmental properties of asphalt mixtures containing incinerator bottom ash[J].Journal of Hazardous Materials,2006,137(3):1742-1749.
[9] TASNEEM K M,BOO H N,EUN J.Sustainable utilization of MSWI bottom ash as road construction materials,Part Ⅱ:Chemical and environmental characterization[J].Airfield and Highway Pavements,2015(6):593-604.
[10] XUE Y,HOU H,ZHU S,et al.Utilization of municipal solid waste incineration ash in stone mastic asphalt mixture:Pavement performance and environmental impact[J].Construction and Building Materials,2009,23(2):989-996.
1)本文所涉及的掺量、比值等除特别说明外均为质量分数或质量比.
[2] 刘栋,李立寒,杨昆.生活垃圾焚烧炉渣沥青混合料的耐久性能[J].同济大学学报(自然科学版),2016,44(1):100-106.LIU Dong,LI Lihan,YANG Kun.Durability of asphalt mixture containing municipal solid waste incineration bottom ash aggregate[J].Journal of Tongji University(Natural Science),2016,44(1):100-106.(in Chinese)
[3] CHEN J,CHU P,CHANG J,et al.Engineering and environmental characterization of municipal solid waste bottom ash as an aggregate substitute utilized for asphalt concrete[J].Journal of Materials in Civil Engineering,2008,20(6):432-439.
[4] OGUNRO V O,INYANG H I,HOOPER F,et al.Gradation control of bottom ash aggregate in superpave bituminous mixes[J].Journal of Materials in Civil Engineering,2004,16(6):604-613.
[5] HASSAN M M,KHALID H.Mechanical and environmental characteristics of bituminous mixtures with incinerator bottom ash aggregates[J].International Journal of Pavement Engineering,2010,11(2):83-94.
[6] HASSAN H F,AL-SHAMSI K.Characterisation of asphalt mixes containing MSW ash using the dynamic modulus |E*| test[J].International Journal of Pavement Engineering,2010,11(6):575-582.
[7] 刘栋,李立寒,崔华杰.炉渣集料对沥青混合料性能影响的试验研究[J].建筑材料学报,2015,18(2):307-311.LIU Dong,LI Lihan,CUI Huajie.Experimental study on influence of municipal solid waste incineration bottom ash aggregate on properties of asphalt mixture[J].Journal of Building Materials,2015,18(2):307-311.(in Chinese)
[8] HUANG C,CHIU C,LI K,et al.Physical and environmental properties of asphalt mixtures containing incinerator bottom ash[J].Journal of Hazardous Materials,2006,137(3):1742-1749.
[9] TASNEEM K M,BOO H N,EUN J.Sustainable utilization of MSWI bottom ash as road construction materials,Part Ⅱ:Chemical and environmental characterization[J].Airfield and Highway Pavements,2015(6):593-604.
[10] XUE Y,HOU H,ZHU S,et al.Utilization of municipal solid waste incineration ash in stone mastic asphalt mixture:Pavement performance and environmental impact[J].Construction and Building Materials,2009,23(2):989-996.
1)本文所涉及的掺量、比值等除特别说明外均为质量分数或质量比.