Production of Dense Graded Cold Asphalt Mixtures with New Cementitious Material

Abstract

Abstract

The energy revolution for offering sustainable energy supply and utilize in terms of economically and environmentally is interested evident for governments and industry. Cement is the main material for constructing the society’s buildings and infrastructures. Meanwhile, 5% of global CO² emission is related to cement industry. Therefore, replacing of cement with one of the other sustainable materials is one of the main objectives of the climate change mitigation strategies around the world. Utilization of fly and bottom ashes in different construction fields decrease the utilization of virgin materials and will reduce the landfill materials and CO² emissions. Accordingly the industrial sustainability will be contributed when using of fly and bottom ashes. This study presents a method to introduce a new blended cement totally from waste fly and bottom ashes based on the hardened mortar properties testing. Two types of Waste Fly Ashes i.e., WFA1 and WFA2 and a Ground Bottom Ash (GBA) were added and optimized to produce a new blended cementitious material. WFA1 which has high lime and gelenite content, WFA2 which has high alkali components and GBA which is high silica content and cost-plus material have been blended with different percentages in this study to produce the mentioned cement. Such waste ash cement would develop an adequate concrete properties i.e., compressive strength and durability. On the other hand, the new cementitious product was found to enhance the performance of the cold asphalt emulsion mixtures. This performance of cold asphalt emulsion mixtures has been investigated by conducting indirect tensile stiffness modulus test.    

Keywords: Waste materials, cold bituminous emulsion mixtures, concrete, stiffness modulus, compressive strength

Cite this Article

Abbas Al-Hdabi, Hassan Al Nageim. Production of Dense Graded Cold Asphalt Mixtures with New Cementitious Material. Recent Trends in Civil Engineering & Technology. 2016; 6(3): 15–22p.