Development and performance determination of warm mix asphalt using rap for Malaysian conditions / Frag Ahmed Ma Kridan

Current concerns on the scarcity of resources necessitate the road building industry to review its production of asphaltic concrete. The use of Warm Mix Asphalt (WMA) technologies with asphalt mixtures containing reclaimed asphalt pavement (RAP) may provide synergistic advantages. WMA-RAP mixes conserves scarce resources such as aggregates by using RAP as partial replacement of aggregates and reduces the use of energy (reduction in production temperature) by using WMA additives. Most specifications allow not more than 30% RAP as higher percentages of RAP introduces variability in the material properties and produces inconsistencies in asphalt mix properties. The goal of this study was to evaluate the performance of warm mix asphalt with high proportions of RAP (30%, 40% and 50%) and using Sasobit as the warm mix additive to reduce the mixing and compaction temperature

A Study On The Quality Of Material In Libyan Iron And Steel Industry

The steel industry plays an important role in the production and supply of steel, which is a basic and important building material that is consume by the construction and the manufacturing industry. Like any other industry, the Libyan iron and steel industry requires the spare parts of the plant and machine, together with other consumable for the smooth operation of the production department. The aim of the research is to study the quality of materials as it relates to rejection of supplied spare parts and consumables in the Libyan iron and steel industry. The data for the research was obtained from the record of all the spare parts and consumables that were rejected in the general material department for the year 2004. The data was analyzed by descriptive statistics