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原文传递 USE OF GLASS FIBERS IN BITUMINOUS MIXES FOR RETARDATION OF REFLECTION CRACKS IN COMPOSITE PAVEMENTS

题名：	USE OF GLASS FIBERS IN BITUMINOUS MIXES FOR RETARDATION OF REFLECTION CRACKS IN COMPOSITE PAVEMENTS
其他题名：	1.Baek,J.,(2010),"Modeling Reflective Cracking Development in Hot-Mix Asphalt Overlays and Quantification of Control Techniques",
正文语种：	英文
作者：	Manoj Kumar Shukla
关键词：	reflection；glass；overlay；characteristics；fatigue；surface；pagat；improve；modified；composite
摘要：	In order to improve the performance of roads and to match the quality of road with constantly increasing traffic, there is a need to shift the focus from traditional flexible and rigid pavement to composite pavement. Laying of bituminous mix layer over cracked concrete surface is, no doubt, a most effective solution but the propagation of reflection crack over the surface of overlaid layer from underlying cracked surface is a major concern. Glass Fibres can be used as an additive in the overlaying bituminous concrete layer to retard the propagation of reflection cracks from the underlying cracked concrete slabs. To investigate the behavior of Glass fiber modified bituminous mix, a study has been carried out to determine the feasibility of glass fibers in retarding the propagation of reflection crack on overlaid bituminous surface. A composite sample section with concrete base and bituminous overlay was prepared and tested with Large Size Wheel Tracking machine to evaluate the number of passes required to observe the reflection crack on the top surface of bituminous overlay. Apart from this, samples were prepared with and without glass fibers and were tested for fatigue life, skid resistance and rutting resistance. It is found that the addition of glass fibres enhanced the stiffness of bituminous mix and resistance to permanent deformation. The glass fiber modified mixes have shown improvement in fatigue characteristics and produced higher tensile strength. With the usage of glass fiber, the Marshall stability increased by 8％ and Retained Tensile Strength improvement of 11％. The fatigue life got enhanced by 40％ and rut depth reduced by 30％ and propagation of reflection cracks delayed by 77％ more no. of cycles as compared to mixes without glass fibre.
出版年：	2018
论文唯一标识：	I-75Y2018V46N01005
英文栏目名称：	Technical Papers
期刊名称：	Indian Highways
拼音刊名(出版物代码)：	I-75
卷：	46
期：	01
页码：	27-33