A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Recycling of Reclaimed Asphaltic Concrete for Highway Construction
The aim of the study was to investigate the potential reuse of reclaimed asphaltic concrete in highway pavement construction. The specific objectives were to determination of the percentages of various constituent materials of the reclaimed asphaltic concrete (RAC) to evaluation of the properties of the constituent materials from the reclaimed asphaltic concrete (RAC) to determination of the particle distribution of the mineral filler, fine, and coarse aggregates, to design of mix for the new asphaltic concrete, to production and evaluation of the new asphaltic concrete with various percentages of virgin materials and to determination of optimal virgin materials for effective recycling of the reclaimed asphaltic concrete (RAC). A sample of Reclaimed Asphaltic concrete from a failed road was collected at a road construction site along Randa road, Ogbomosho, Oyo state for evaluation. 250kg of the failed asphaltic concrete was collected as disturbed samples with the use of shovel and head pan and taken to the geotechnical and highway laboratory of Landmark University, km 4, Ipetu, Omu-Aran, Kwara state for laboratory investigations. The specific gravities, stability, crushing, and bitumen extraction tests carried out on the reclaimed asphalt proved that it is unsuitable for highway construction which prompted the necessity to provide virgin mix of the required standard in which the reclaimed asphalt was improved with according to ASTM specifications. The study therefore concluded that RAC mixtures must meet the same mix design specifications required for virgin mixtures. RAC is a valuable, high quality material that can replace more expensive virgin and aggregates and binders. The most commercial use of RAC is in asphalt mixtures. Also, it can be recommended that proper techniques should be used for obtaining, stockpiling, and processing RAC to maintain its quality.
Recycling of Reclaimed Asphaltic Concrete for Highway Construction
The aim of the study was to investigate the potential reuse of reclaimed asphaltic concrete in highway pavement construction. The specific objectives were to determination of the percentages of various constituent materials of the reclaimed asphaltic concrete (RAC) to evaluation of the properties of the constituent materials from the reclaimed asphaltic concrete (RAC) to determination of the particle distribution of the mineral filler, fine, and coarse aggregates, to design of mix for the new asphaltic concrete, to production and evaluation of the new asphaltic concrete with various percentages of virgin materials and to determination of optimal virgin materials for effective recycling of the reclaimed asphaltic concrete (RAC). A sample of Reclaimed Asphaltic concrete from a failed road was collected at a road construction site along Randa road, Ogbomosho, Oyo state for evaluation. 250kg of the failed asphaltic concrete was collected as disturbed samples with the use of shovel and head pan and taken to the geotechnical and highway laboratory of Landmark University, km 4, Ipetu, Omu-Aran, Kwara state for laboratory investigations. The specific gravities, stability, crushing, and bitumen extraction tests carried out on the reclaimed asphalt proved that it is unsuitable for highway construction which prompted the necessity to provide virgin mix of the required standard in which the reclaimed asphalt was improved with according to ASTM specifications. The study therefore concluded that RAC mixtures must meet the same mix design specifications required for virgin mixtures. RAC is a valuable, high quality material that can replace more expensive virgin and aggregates and binders. The most commercial use of RAC is in asphalt mixtures. Also, it can be recommended that proper techniques should be used for obtaining, stockpiling, and processing RAC to maintain its quality.
Recycling of Reclaimed Asphaltic Concrete for Highway Construction
Osuolale O.M. (author) / Amoo K.O. (author) / Anifowoshe O.Z. (author) / Adeyemi M.A. (author) / Ayinde R.B. (author)
2021-12-20
oai:zenodo.org:5792925
Journal of Advances in Civil Engineering and Management 4(3) 1-15
Article (Journal)
Electronic Resource
English
DDC:
690
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