{"title":"Ageing properties of warm-mix asphalt containing reclaimed asphalt pavement","authors":"W. M. Hasan, A. Sarkar","doi":"10.1680/jtran.22.00014","DOIUrl":null,"url":null,"abstract":"A study was undertaken to evaluate the influence of an organic and chemical additive on the short- and long-term ageing properties of warm-mix asphalt containing reclaimed asphalt pavement. Various mechanical tests, including dynamic creep, indirect tensile strength, semi-circular bending, and resilient modulus were conducted. The results indicated that the mixture containing reclaimed asphalt pavement without additives showed a higher flow number in both unageing and ageing processes, indicating higher resistance to rutting. The mixture containing the chemical additive demonstrated higher resistance to moisture susceptibility in comparison to the one with the organic admixture. Moreover, the mixtures containing recycled asphalt pavement and the chemical additive showed higher fracture energy than mixtures containing recycled asphalt pavement and the organic additive, while the latter showed the highest resilient modulus in the unageing and ageing process.","PeriodicalId":49670,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Transport","volume":"112 1","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2022-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Institution of Civil Engineers-Transport","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1680/jtran.22.00014","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 1
Abstract
A study was undertaken to evaluate the influence of an organic and chemical additive on the short- and long-term ageing properties of warm-mix asphalt containing reclaimed asphalt pavement. Various mechanical tests, including dynamic creep, indirect tensile strength, semi-circular bending, and resilient modulus were conducted. The results indicated that the mixture containing reclaimed asphalt pavement without additives showed a higher flow number in both unageing and ageing processes, indicating higher resistance to rutting. The mixture containing the chemical additive demonstrated higher resistance to moisture susceptibility in comparison to the one with the organic admixture. Moreover, the mixtures containing recycled asphalt pavement and the chemical additive showed higher fracture energy than mixtures containing recycled asphalt pavement and the organic additive, while the latter showed the highest resilient modulus in the unageing and ageing process.
期刊介绍：
Transport is essential reading for those needing information on civil engineering developments across all areas of transport. This journal covers all aspects of planning, design, construction, maintenance and project management for the movement of goods and people.
Specific topics covered include: transport planning and policy, construction of infrastructure projects, traffic management, airports and highway pavement maintenance and performance and the economic and environmental aspects of urban and inter-urban transportation systems.
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