Parametric Analysis of Resilient Modulus Modeling for Recycled Asphalt Pavement in Base Layer

2014 ◽  
Vol 2401 (1) ◽  
pp. 30-43
Author(s):  
Ehab M. Noureldin ◽  
Magdy Abdelrahman
Keyword(s):  
Parametric Analysis ◽  
Resilient Modulus ◽  
Asphalt Pavement ◽  
Base Layer ◽  
Recycled Asphalt Pavement ◽  
Recycled Asphalt

Laboratory characterisation of recycled asphalt pavement as a base layer

2010 ◽  
Vol 11 (2) ◽  
pp. 123-131 ◽  
Author(s):  
Tahsina Binte Alam ◽  
Magdy Abdelrahman ◽  
Scott A. Schram
Keyword(s):  
Asphalt Pavement ◽  
Base Layer ◽  
Recycled Asphalt Pavement ◽  
Recycled Asphalt

scholarly journals Investigation of the Effect of Recycled Asphalt Pavement Material on Permeability and Bearing Capacity in the Base Layer

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Ayşegül Güneş Seferoğlu ◽  
Mehmet Tevfik Seferoğlu ◽  
Muhammet Vefa Akpınar
Keyword(s):  
Bearing Capacity ◽  
Asphalt Pavement ◽  
Linear Increase ◽  
Base Layer ◽  
Sieve Analysis ◽  
Recycled Asphalt Pavement ◽  
Recycled Asphalt ◽  
Suitable Material ◽  
Base Course ◽  
Aggregate Base

The purpose of this research was to investigate the effects of recycled asphalt pavement (RAP) and cement content on the permeability and bearing capacity characteristics of aggregate base courses. Mixtures containing untreated RAP ranging between 0 and 100 percent and 1, 2, and 3% cement-treated RAP were subjected to laboratory tests (bitumen content, sieve analysis, modified proctor, soaked California bearing ratio (CBR), and constant-level permeability tests). The results showed that, as the RAP percentage in the mixture increased, CBR values decreased considerably. Moreover, there is a linear increase in the CBR values with cement treatment. Optimum moisture contents (OMC) and maximum dry densities (MDD) showed a decreasing trend. Increasing the cement percentages in 100% RAP blend increases the OMC and MDD values. The permeability of RAP showed a decrease as the percentage of RAP and cement increased in blends. The study showed that the CBR value of the 20% RAP blend is also obtained in the 100% RAP/3% cement-treated blend. Thus, it has been understood that cement is a suitable material in order to increase the use of RAP. In addition, the increase in the percentage of RAP and cement made the base course more impermeable.

scholarly journals Wood Fly Ash Stabilized Road Base Layers with High Recycled Asphalt Pavement Content

2021 ◽  
Vol 16 (2) ◽  
pp. 1-15
Author(s):  
Peteris Skels ◽  
Viktors Haritonovs ◽  
Edvards Pavlovskis
Keyword(s):  
Fly Ash ◽  
Asphalt Pavement ◽  
Pilot Project ◽  
Base Layer ◽  
Freezing And Thawing ◽  
Recycled Asphalt Pavement ◽  
Recycled Asphalt ◽  
Road Base ◽  
Proctor Test ◽  
Pavement Base

Wood fly ash stabilised road base layers with high recycled asphalt pavements content was studied both at the laboratory and in-situ. The original recipe was chosen based on an actual stabilised pavement base layer design with cement CEM II/B-T 42.5R but optimised using wood fly ash. The existing road base layer from gravel was mixed with dolomite aggregate and recycled asphalt pavement, adding cement and wood fly ash at different proportions. The mixture was compacted at optimal water content according to the Standard Proctor test and further conditioned. Resistance to freezing and thawing of hydraulically bound mixtures was checked after 28 days of conditioning. Even 50 cycles of freezing and thawing were used. Test results indicated wood fly ash as an effective alternative to the typically used cement for road base stabilisation, including recycled asphalt pavement material. Three hydraulically bound mixtures were chosen for test sections in the pilot project. The project includes five different sections with three different hydraulic binder recipes. The performance of each section was evaluated.

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