Use of Fly Ash Alongwith Blast Furnace Slag as Partial Replacement of Fine Aggregate and Mineral Filler in Asphalt Mix, at High Temperature

摘要

The problems associated with the environmentally safe and efficient disposal of waste continue to grow. In many areas, existing landfills are beginning to fill up, and a "not-in-my-backyard" philosophy has made the establishment of new landfills very difficult. The cost of disposal continues to increase while the types of wastes accepted at municipal solid waste landfills are becoming more and more restricted. One answer to all of these problems lies in the ability of society to develop beneficial uses for these waste products. Pakistan is a developing country and in order to open new avenues of prosperity there is a need to develop roads network throughout the country. The use of waste byproducts would also relieve some of the burden on the natural resources / virgin materials. A research was undertaken to study the use of fly ash and granulated blast furnace slag as road construction materials and to see how these can improve the properties of asphalt mix design at high temperatures.