Evaluate the Effect of Waste Ground Rubber Tire Powder in Hot Mix Asphalt
In the present study, the effect of waste ground rubber tire powder (WGRTP) modifier on various mechanical properties such as Marshall stability, flow, Marshall quotient (MQ), bulk specific gravity, air voids, voids filled with bitumen (VFB) and percent voids in compacted mineral aggregates (VMA) of asphalt mixture has been evaluated. The Marshall tests of the polymer modified asphalt mixture, prepared through dry process, indicated the optimum waste polymer modifier content to be 5% by weight of mix. The waste polymer modified asphalt mix containing 5% WGRTP showed considerable improvement in various mechanical properties of the mix compared to the conventional asphalt mixture. The appropriate amount of the added WGRTP was found to be 5% by weight of aggregate. This percentage results in the maximum level of stability. Keywords—Hot mix asphalt; Waste ground rubber tire powder; Dry process; Marshall test method
RECYCLING OF WASTE TYRE RUBBER DEPOSITS IN AIRFIELD RUNWAY: A REVIEW
In the recent years, the aviation industry has extended its passenger services by deploying more number of large Aircrafts connecting all possible places across the globe. Though the passenger services are significantly increased on the one side, it has also created a serious threat on the other side with more deposition of rubber at the time of landing leading to reduced payment skid-resistance and the frictional coefficient which decides the safe landing and take-off of any aircraft in the landing area. In this paper, an attempt has been made to review and discuss the various methodologies that are used for recycling the built-up rubber deposits in the airfield runway by comparing the vehicular tyre rubber recycling methodologies.
Wear and deformation characteristics of fibre reinforced asphalt pavements
Abstract The effects of cellulose, glass, mineral and synthetic polyester fibres on the wear and deformation of asphalt pavements are shown. Cellulose fibres were found to be good because they stabilise greater amounts of bitumen in the asphalt pavements. A synthetic polyester fibre was found to be a real reinforcing fibre in bitumen. If high stiffnesses are needed for pavement layers a harder, elastic synthetic styrene-butadiene-rubber bitumen together with suitable fibres can also be used. This binder in asphalt mixtures produces high resistance to deformation at high temperatures.