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Show simple item record Walubita, LF Mahmoud, E Lee, SI Carrasco, G Komba, Julius J Fuentes, L Nyamuhokya, TP 2020-03-19T07:41:09Z 2020-03-19T07:41:09Z 2019-07
dc.identifier.citation Walubita, L.F. et al. 2019. Use of grid reinforcement in HMA overlays - A Texas field case study of Highway US59 in Atlanta District. Construction and Building Materials, vol. 213, pp. 325-336 en_US
dc.identifier.issn 1879-0526
dc.identifier.issn 0950-0618
dc.description Copyright: 2019 Elsevier. This is a pre-print version. The definitive version of the work is published in Construction and Building Materials, vol. 213, pp. 325-336 en_US
dc.description.abstract One of the common methods to mitigate reflective cracking, in existing cracked pavements, is the use of interlayer grid reinforcements in hot-mix asphalt (HMA) overlay construction during maintenance and/or rehabilitation projects. As a means of sharing the practical experience, lessons learned, and demonstrating the performance benefits of using interlayer grid-reinforcements, this paper presents a field case study where different types of grid reinforcements (namely geosynthetic paving mats) were used in HMA overlay construction to mitigate reflective cracking and thereafter, field performance was monitored and evaluated periodically. Two HMA overlay test sections (denoted as Sec 13 and Sec 14), reinforced with different geosynthetic materials were constructed in 2011 over an existing cracked HMA pavement (with transverse cracks) on an in-service highway US 59 in the Atlanta District of Texas. Field performance was subsequently monitored/evaluated for a period of over seven years against an adjacent Control section (Sec 01), without grid reinforcement, on the same US 59 highway. Under the same pavement structure, traffic loading, and climatic conditions, various performance indices were evaluated semi- annually including reflective cracking, rutting, longitudinal surface profiles, and interlayer bonding. While the rutting performance was indifferent on all the three test sections after 7 years of service, 17% of reflective cracking was measured on the Control section versus 4% on the grid-reinforced test sections – demonstrating that the use of grid reinforcement (i.e., geosynthetic paving mats) has been effective in mitigating reflective cracking from the existing cracked HMA pavement. Similarly, while coring indicated satisfactory interlayer bonding conditions on all the three test sections, the rate of pavement surface roughness deterioration was also hardly different on all the three test sections – albeit that the Control section (Sec 01) exhibited superiority in terms of the profile indices (smoothness/serviceability) than the grid-reinforced test sections (Sec 13 and Sec 14). en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Workflow;23074
dc.subject Hot-mix asphalt en_US
dc.subject HMA en_US
dc.subject Overlays en_US
dc.subject Reflective cracking en_US
dc.subject Grid reinforcement en_US
dc.subject Geosynthetic en_US
dc.subject Paving-mat en_US
dc.title Use of grid reinforcement in HMA overlays - A Texas field case study of Highway US59 in Atlanta District en_US
dc.type Article en_US

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