A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Behaviour of Geosynthetic Reinforced Reclaimed Asphalt Pavement Bases Under Static Loading
Reclaimed asphalt pavement (RAP) is increasingly used as base course material in pavement construction. Being environmental-friendly and energy efficient, RAP material has been increasing used worldwide for construction of hot mix asphalt (HMA) mixes and in base courses. Due to the presence of asphalt, RAP causes excessive deformation leading to increased vertical stresses on top of subgrade. Geocell, a three-dimensional cellular confinement, confines the RAP and prevents the lateral spreading of the material. A layer of geotextile was also used as a separator between base and subgrade that restricted the aggregates to penetrate into weak subgrade, thus decreasing surface deformations. Static plate load tests were conducted on reinforced and unreinforced bases to evaluate the geosynthetic reinforcement on RAP bases over weak subgrade. Two types of geocell heights (100 and 125 mm) were used in this study, and a total of eight geosynthetic reinforced and unreinforced RAP sections were tested under static loading. The benefits of geosynthetic reinforcement in RAP sections were evaluated in terms of angle of stress distribution at the interface of base and subgrade. The test results showed that the geosynthetic reinforcement improved the performance of unpaved RAP sections by widening the stress distribution angle and reducing the rut depth if the base courses were equally compacted in unreinforced and reinforced sections.
Behaviour of Geosynthetic Reinforced Reclaimed Asphalt Pavement Bases Under Static Loading
Reclaimed asphalt pavement (RAP) is increasingly used as base course material in pavement construction. Being environmental-friendly and energy efficient, RAP material has been increasing used worldwide for construction of hot mix asphalt (HMA) mixes and in base courses. Due to the presence of asphalt, RAP causes excessive deformation leading to increased vertical stresses on top of subgrade. Geocell, a three-dimensional cellular confinement, confines the RAP and prevents the lateral spreading of the material. A layer of geotextile was also used as a separator between base and subgrade that restricted the aggregates to penetrate into weak subgrade, thus decreasing surface deformations. Static plate load tests were conducted on reinforced and unreinforced bases to evaluate the geosynthetic reinforcement on RAP bases over weak subgrade. Two types of geocell heights (100 and 125 mm) were used in this study, and a total of eight geosynthetic reinforced and unreinforced RAP sections were tested under static loading. The benefits of geosynthetic reinforcement in RAP sections were evaluated in terms of angle of stress distribution at the interface of base and subgrade. The test results showed that the geosynthetic reinforcement improved the performance of unpaved RAP sections by widening the stress distribution angle and reducing the rut depth if the base courses were equally compacted in unreinforced and reinforced sections.
Behaviour of Geosynthetic Reinforced Reclaimed Asphalt Pavement Bases Under Static Loading
Lecture Notes in Civil Engineering
Satyanarayana Reddy, C. N. V. (editor) / Saride, Sireesh (editor) / Haldar, Sumanta (editor) / Sheikh, Ishfaq Rashid (author) / Shah, M. Y. (author) / Wani, K. M. N. Saquib (author)
2021-08-03
12 pages
Article/Chapter (Book)
Electronic Resource
English
Laboratory Investigation of a Geosynthetic Reinforced Pavement Under Static and Dynamic Loading
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