Effect of Lime Stone & Cement on the Mechanical Properties of Hot Mix Asphalt (HMA) | ||
| Al-Rafidain Engineering Journal (AREJ) | ||
| Article 4, Volume 27, Issue 2, September 2022, Pages 39-48 PDF (1.53 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.33899/rengj.2022.133947.1174 | ||
| Authors | ||
| Bayan Abdullah Taha Al-Ali* 1; Abdulkhalik M. Al-Taei2; Shafika Abdullah1 | ||
| 1Highways and Bridges Department, Collage of Engineering, Duhok Polytechnic University, Duhok, Iraq | ||
| 2Civil Engineering Department, College of Engineering, University of Mosul, Mosul, Iraq | ||
| Abstract | ||
| Most of the roads in Iraq are paved using Hot Mix Asphalt (HMA) which is consisted of aggregates, asphalt cement and filler. In this study a laboratory investigation is conducted using two types of widely used fillers highly and locally available. Four different proportions of fillers are. Filler proportions used in this study are four proportion (i.e., 1.9%, 2.5%, 3.5%, and 4.5%) by total weight of aggregate for both types of fillers used. These proportions were blended using asphalt with penetration 40/50 and Performance Grade (PG70-10) using super-pave mix design methodology. The performance of bitumen binder with both types of filler was evaluated by: Penetration, Ductility, Softening Point, Penetration Index, Volumetric properties, Indirect Tensile Strength and Tensile Strength Ratio. The volumetric properties indicate that, the proportions of (1.9%, and 2.5%) for both type of filler are within the Super-pave criteria as the ITS increased with the increase of filler content and the highest TSR values for 2.5% Limestone dust is 90%, while for 3.5% Cement is 89.7%. Finally, it was concluded that the HMA is highly influenced by the amount and type of filler content. | ||
| Keywords | ||
| HMA; Super-pave; Limestone; Cement; ITS; TSR | ||
| References | ||
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