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Properties of Modified Bitumen in Hot Mix Asphalt Using Local Crumb Rubber

Author: Min Khiong Lim

Publisher:

Published: 2014

Total Pages: 71

ISBN-13:

This thesis presents a study of laboratory evaluation on the properties of modified bitumen in Hot Mix Asphalt (HMA) using local crumb rubber with the aim of partially replacing bituminous binder as well as improving the binder{u2019}s properties. In the study, fine crumb rubber ranging of 0.3mm to 0.6mm taken from waste tires was added into bituminous binder using the wet process. The crumb rubber content of 5%, 10% 15% and 19% of weight of bitumen were added to virgin binder as modified specimens while unmodified bitumen shall be used as control samples. The crumb rubber modified binder specimens were examined by the penetration test and softening test to define the changes in terms of their physical properties prior to mix with graded aggregates to determine the volumetric properties such as Voids in Total Mix (VIM), Voids in Mineral Aggregate (VMA) and Voids Filled with Bitumen) VFB. Apart from that the Marshall Stability, Marshall Flow and Stiffness shall be determined. Two HMA aggregate mixes were being considered in this study, namely AC 14 (dense graded) and SMA 14 (gap graded). The outcome indicated that the modified binder posed a higher viscosity and temperature resistant while the increase of crumb rubber content lead to the increase in terms of the performance of HMA characteristic especially the Marshall Stability for both HMA mixes.

Modified Asphalt

Author: Jose Luis Rivera Armenta

Publisher: BoD – Books on Demand

Published: 2018-09-19

Total Pages: 142

ISBN-13: 1789237262

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Asphalt modification is an important area in the development of new road and pavement materials. There is an urgent demand for road materials that can minimize fracture at low temperatures and increase resistance to deformation at high temperatures. The function of asphalt is to bind aggregate to protect it from water and other harmful agents. In the beginning asphalt was ideal for this purpose, but recently traffic loads have increased and environmental factors have deteriorated more rapidly than before. Asphalt is a byproduct of crude oil in the refining process, and it is considered a complex heterogeneous mixture of hydrocarbons. Asphalt modification has become an important research area, using several methods and new materials as modifiers.

Proceedings of the 9th International Conference on Maintenance and Rehabilitation of Pavements—Mairepav9

Author: Christiane Raab

Publisher: Springer Nature

Published: 2020-06-19

Total Pages: 955

ISBN-13: 3030486796

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This book gathers the proceedings of an international conference held at Empa (Swiss Federal Laboratories for materials Science and Technology) in Dübendorf, Switzerland, in July 2020. The conference series was established by the International Society of Maintenance and Rehabilitation of Transport Infrastructure (iSMARTi) for promoting and discussing state-of-the-art design, maintenance, rehabilitation and management of pavements. The inaugural conference was held at Mackenzie Presbyterian University in Sao Paulo, Brazil, in 2000. The series has steadily grown over the past 20 years, with installments hosted in various countries all over the world. The respective contributions share the latest insights from research and practice in the maintenance and rehabilitation of pavements, and discuss advanced materials, technologies and solutions for achieving an even more sustainable and environmentally friendly infrastructure.

Recent Developments in Pavement Design, Modeling and Performance

Author: Sherif El-Badawy

Publisher: Springer

Published: 2018-10-30

Total Pages: 205

ISBN-13: 303001908X

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This volume includes a collection of research and practical papers from an international research and technology activities on recent developments in pavement design, modeling and performance, and effects on infrastructure, green energy, technology and integration. Sustainability is increasingly a key priority in engineering practices. With the aging transportation infrastructure and renewed emphasis on infrastructure renovation by transportation agencies, innovations are urgently needed to develop materials, designs, and practices to ensure the sustainability of transportation infrastructure. The volume is based on the best contributions to the 2nd GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, Egypt 2018 – The official international congress of the Soil-Structure Interaction Group in Egypt (SSIGE).

Using Ground Tire Rubber in Hot Mix Asphalt Pavements

Author: Donna S. Harmelink

Publisher:

Published: 1999

Total Pages: 110

ISBN-13:

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Documents the construction and performance of the research study which was initiated to address section 1038(d) of the 1991 Intermodal Surface Transportation Efficiency Act (ISTEA). The project selected to demonstrate the crumb rubber process was located on Platt Canyon (SH 75) from Bowles to C470 in the Denver metropolitan area. The project was a low volume roadway and quantities of crumb rubber introduced into the mix were minimal. This was to reduce risk in terms of premature failure and Colorado's limited experience with crumb rubber. Because of this limited experience, the "dry" process was selected. The project contained four different mix designs. A mix containing 1% [20 lb/ton (10 kg/Mg)] crumb rubber, a mix containing 1 lb/ton (0.5 kg/Mg), a mix containing 3 lb/ton (1.5 kg/Mg) and a mix which contained no rubber were placed on the project.