The Utilization of production shingle waste in hot mix asphalt and warm mix asphalt

Utilization of production shingle waste in hot mix asphalt and warm mix asphalt

Abstract

Shingle is a roofing material with fiber glass carrier, covered with mineral stones in various colors and shaped in decorative patterns. Shingle material can appear as an excess usage due to defective production problems or at the end of their service life. Therefore, the evaluation of these material in different areas is important for a sustainable production process. In this study, the utilization of production shingle waste material in asphalt pavement were investigated. Mechanical properties of hot mix and warm mix asphalt samples involving different amount of production shingle waste (1-6% by weight of the aggregate) were evaluated. Following the determination of optimum rate of shingle waste bitumen content is reduced to decrease both hazardous effects of bitumen and production cost. Marshall Mix Design criteria was employed on determination of maximum reduction on bitumen content and the amount of shingle utilization within the asphalt pavement. As a final analysis, indirect tensile tests were performed on the specimens prepared with determined bitumen content and shingle waste. As a result, it is concluded that, utilization of waste shingles within the asphalt mixture not only benefits the environment and cost but also improves Marshall stability and Marshall quotient of the mixtures.