Utilization of Industrial Waste Material in Highway Construction

Abstract

Highways play an important role in developing the country. Highways affect directly on the economy, society, culture and security, so the scientists are looking for developing the performance of highways and low maintenance cost. The main objective of this study is to modify the bituminous mixed by utilization of waste industrial materials. , There are many wastes industrial materials can be used in bitumen. A study has been carried out in this search to illustrate the use of fly ash, (byproduct of combustion Pulverized coal in power plants , it produced during combustion of coal in bituminous paving mixes), Silica Fume,(by-product of producing silicon metal or ferro silicon alloys in smelters using arc furnaces). For comparison, control mixes with modified bituminous mixes has been considered. Marshall Test has been conducted for the purpose of mix design as well as appreciation of paving mixes. It is observed that the mixes with fly ash and silica fume as modifiers modify the properties compared to control mixes. In this paper Silica Fume and Fly Ash are used as a modifier. Marshall stability test was conducted according to(ASTM D 6927-06). The percentages of modified mixtures used are 2, 4, 6, 8 and 10 % by bitumen weight. The results showed that the Marshall stability modified with SF and F.A were increased by 18.4% and 22.3 % respectively. So, we can concluded that adding SF and FA to asphalt binder success in improving the properties of bituminous mixes for flexible pavement. Hence, it has been recommended to utilize Silica Fume and Fly Ash wherever available, not only reducing the cost of construction, but also solve the bituminous mixes properties.

Egyptian Reuse Standards of Treated Wastewater for Irrigation: "A Comparative Study of Physico-Chemical and Agronomic Controls" .

“…They are also an important element for the reuse of treated wastewater for irrigation in agriculture. They could obstruct irrigation water distribution lines and emitters, causing irrigation systems harm [5,87,90,91].…”

A Comparison of Daytime and Nighttime Operating Speed on Rural Multi- Lane Highway Sections in Egypt

“…Speeds on Rural roads depend mainly on the condition of the pavement and its periodic maintenance operations, which improve its performance [1][2][3]. Many studies are being conducted to improve the condition of the paving, whether by adding polymeric materials, a mixture of nano materials, or even waste materials [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Also, lighting is one of the important factors affecting speed, as the presence of sunlight enhances the vision of the driver during daytime.…”