Variability in Resilient Modulus of Reclaimed Asphalt Pavement as Base Layer and Its Impact on Flexible Pavement Performance

2010 ◽  
Vol 2167 (1) ◽  
pp. 18-29 ◽  
Author(s):  
Mohamed Attia ◽  
Magdy Abdelrahman
Keyword(s):  
Resilient Modulus ◽  
Asphalt Pavement ◽  
Flexible Pavement ◽  
Base Layer ◽  
Pavement Performance ◽  
Reclaimed Asphalt Pavement ◽  
Reclaimed Asphalt

scholarly journals Laboratory characterization of reclaimed asphalt pavement for road construction in Egypt

2017 ◽  
Vol 44 (6) ◽  
pp. 417-425 ◽  
Author(s):  
E. Mousa ◽  
A. Azam ◽  
M. El-Shabrawy ◽  
S.M. El-Badawy
Keyword(s):  
Resilient Modulus ◽  
Asphalt Pavement ◽  
Road Construction ◽  
California Bearing Ratio ◽  
Base Layer ◽  
Coefficient Of Determination ◽  
Reclaimed Asphalt Pavement ◽  
Reclaimed Asphalt ◽  
Load Duration ◽  
The Impact

This paper presents the engineering characteristics of reclaimed asphalt pavement (RAP), blended with virgin aggregate for unbound base and subbase layers. The proportions of RAP were 0%, 20%, 60%, 80%, and 100% by total mass of the blend. The experimental laboratory testing included index properties such as gradation, modified Proctor compaction, California Bearing Ratio, and hydraulic conductivity. Repeated load resilient modulus testing was conducted on the blends. The impact of load duration on resilient modulus was also investigated. A strong inverse trend was found between resilient modulus and California Bearing Ratio. An accurate model was proposed for the prediction of the resilient modulus as a function of stress state and reclaimed asphalt pavement percentage with coefficient of determination of 0.94. Finally, multilayer elastic analysis of typical pavement sections with the base layer constructed of virgin aggregate and reclaimed asphalt pavement blends showed good performance.

Effectiveness of Double-Layer HDPE Geocell System to Reinforce Reclaimed Asphalt Pavement (RAP)-Base Layer

2021 ◽  
pp. 593-604
Author(s):  
Md. Ashrafuzzaman Khan ◽  
Nripojyoti Biswas ◽  
Aritra Banerjee ◽  
Surya Sarat Chandra Congress ◽  
Anand J. Puppala
Keyword(s):  
Double Layer ◽  
Asphalt Pavement ◽  
Base Layer ◽  
Reclaimed Asphalt Pavement ◽  
Reclaimed Asphalt

Laboratory investigation of engineering properties of rubberized asphalt mixtures containing reclaimed asphalt pavement

2010 ◽  
Vol 37 (11) ◽  
pp. 1414-1422 ◽  
Author(s):  
Feipeng Xiao ◽  
Serji Amirkhanian ◽  
Bradley Putman ◽  
Junan Shen
Keyword(s):  
Resilient Modulus ◽  
Asphalt Pavement ◽  
Crumb Rubber ◽  
Asphalt Mixtures ◽  
Engineering Properties ◽  
Reclaimed Asphalt Pavement ◽  
Reclaimed Asphalt ◽  
The Us ◽  
Rubberized Asphalt Concrete ◽  
Environmentally Sound

An improved understanding of the rheological and engineering properties of a rubberized asphalt concrete (RAC) pavement that contains reclaimed asphalt pavement (RAP) is important to stimulating the use of these recycled and by-product materials in asphalt mixtures. The uses of RAP and rubberized asphalt in the past have proven to be economical, environmentally sound, and effective in hot mix asphalt (HMA) mixtures across the US and the world. The objective of this research was to investigate the binder and mixture performance characteristics of these modified asphalt mixtures through a series of laboratory tests to evaluate properties such as the fatigue factor G*sinδ, rutting resistance, resilient modulus, and fatigue life. The results of the experiments indicated that the use of RAP and crumb rubber in HMA can effectively improve the engineering properties of these mixes.

scholarly journals Use of Reclaimed Asphalt Pavement and Bagasse Ash in Bituminous Flexible Pavement

2019 ◽  
Vol 9 (2) ◽  
pp. 3758-3762
Keyword(s):  
Coarse Aggregate ◽  
Asphalt Pavement ◽  
Flexible Pavement ◽  
Waste Material ◽  
Reclaimed Asphalt Pavement ◽  
Reclaimed Asphalt

An attempt has been made to utilize the waste material such as reclaimed asphalt pavement and bagasse ash by replacing coarse aggregate sieve by sieve and cement while preparing the bituminous mix sample. The usage of RAP was done at different proportions of 15%, 30% and 45% by the weight of coarse aggregate and bagasse ash was used at different proportions of 5%, 7.5% and 10%. Various tests on bitumen, aggregates and obtained bituminous samples were conducted for final results. Therefore, from the results obtained, it can be concluded that all the results of replacement mixes were found to be within the limits of MORTH 5th revision requirement and they have shown the satisfactory results also. The usage of RAP and Bagasse ash can be done effectively

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