Prevention of cracking progress of asphalt overlayer with glass fabric
01 Jan 1993-
TL;DR: In this article, both laboratory experimentation and field road test were carried out to study the effectiveness of the application of glass fabric (grid) to prevent the cracking progress of asphalt overlayer.
Abstract: Cracking is the principal type of failure of asphalt overlayers. In order to prevent the cracking progress of asphalt overlayers, glass fabric (grid) is used to enhance the resistance of asphalt overlayer to reflective cracking or fatigue cracking. Glass fabric (grid) is a very cheap textile material with high tensile strength and low deformation ratio in China. In this paper, both laboratory experimentation and field road test were carried out to study the effectiveness of the application of glass fabric (grid) to prevent the cracking progress of asphalt overlayer. The research results show that the application of glass fabric (grid) at the bottom of an asphalt overlayer can significantly prolong the life of the asphalt overlayer against cracking progress, but it hardly delays the initial cracking. (A) For the covering abstract see IRRD 857794.
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TL;DR: In this paper, an experimental program was conducted to determine the effects of geosynthetic reinforcement on mitigating reflection cracking in asphalt overlays, and the results indicated a significant reduction in the rate of crack propagation in reinforced samples compared to unreinforced samples and type of old pavement.
139 citations
TL;DR: In this paper, the performance of geosynthetic-interlayers sandwiched between the pre-cracked old pavement and new asphalt layers are evaluated using flexural fatigue testing.
50 citations
TL;DR: In this paper, the authors investigated the use of geogrids as a reinforcement-crack arresting layer in thin concrete overlays to enhance their performance by providing additional tensile strength, ductility, and more importantly, controlling crack propagation to mitigate reflective cracking.
27 citations
Dissertation•
01 Jan 2016
TL;DR: Thesis as discussed by the authors, M.E. et al., 2016. Department of Civil and Environmental Engineering, American University of Beirut, Beirut, United Arab Emirates, USA. 6358.
Abstract: Thesis. M.E. American University of Beirut. Department of Civil and Environmental Engineering, 2016. ET:6358.
20 citations
Journal Article•
TL;DR: In this paper, an experimental program was conducted to determine the effects of geosynthetic reinforcement on mitigating reflection cracking in asphalt overlays, where an asphalt mixture specimen was placed on top of two discontinuous concrete or asphalt concrete blocks with 100 mm height.
Abstract: An experimental program was conducted to determine the effects of geosynthetic reinforcement on mitigating reflection cracking in asphalt overlays. The objectives of this study were to asses the effects of geosynthetics inclusion and its placement location on the accumulation of permanent deformation. To simulate an asphalt pavement overlaid on top of a crack in a concrete or asphalt pavement, an asphalt mixture specimen was placed on top of two discontinuous concrete or asphalt concrete blocks with 100 mm height. Four types of specimens were prepared with respect to the location of geogrid: (I) Unreinforced samples, which served as control specimen, (II) Samples with geogrid embedded on the concrete or asphalt concrete block, (III) Samples with geogrid embeded one-thired depth of asphalt concrete from bottom, (IV) Samples with geogrid embedded in the middle of the asphalt beam. Each specimen was then placed on the rubber foundation in order to be tested. Simulated- repeated loading was applied to the asphalt mixture specimens using a hydraulic dynamic loading frame. Each experiment was recorded in its entirety by a video camera to allow the physical observation of reflection crack formation and propagation. This study revealed that geosynthetic reinforced specimens exhibited resistance to reflection cracking. Placing the geogrid at the one- third depth of overlay thickness had the maximum predicted service life. Results indicate a significant reduction in the rate of crack propagation and rutting in reinforced samples compared to unreinforced samples.
19 citations