Effect of Rice Husk Ash on the Performance of Hot Asphalt Mixes.
Helal, M., Mahdy, H., Ibrahim, M. (2020). Effect of Rice Husk Ash on the Performance of Hot Asphalt Mixes.. EKB Journal Management System, 45(2), 8-19. doi: 10.21608/bfemu.2020.97418
Mohamed Mohiey Eldien Helal; Hassan Abd-elzaher Mahdy; Mokhtar Fahmy Ibrahim. "Effect of Rice Husk Ash on the Performance of Hot Asphalt Mixes.". EKB Journal Management System, 45, 2, 2020, 8-19. doi: 10.21608/bfemu.2020.97418
Helal, M., Mahdy, H., Ibrahim, M. (2020). 'Effect of Rice Husk Ash on the Performance of Hot Asphalt Mixes.', EKB Journal Management System, 45(2), pp. 8-19. doi: 10.21608/bfemu.2020.97418
Helal, M., Mahdy, H., Ibrahim, M. Effect of Rice Husk Ash on the Performance of Hot Asphalt Mixes.. EKB Journal Management System, 2020; 45(2): 8-19. doi: 10.21608/bfemu.2020.97418

Effect of Rice Husk Ash on the Performance of Hot Asphalt Mixes.

MEJ- Mansoura Engineering Journal
Article 2, Volume 45, Issue 2, June 2020, Page 8-19  XML PDF (546.33 K)
Document Type: Research Studies
DOI: 10.21608/bfemu.2020.97418
View on SCiNiTO View on SCiNiTO
Authors
Mohamed Mohiey Eldien Helal email 1; Hassan Abd-elzaher Mahdy2; Mokhtar Fahmy Ibrahim3
1M.sc Student, Civil Engineering, High Institute of Engineering- El Shorouk Academy, Egypt
2Professor. of Highway and Airport Engineering, Public Works Department, Faculty of Engineering, Ain Shams University, Egypt
3Lecturer of Highway and Traffic Engineering, Civil Engineering, High Institute of Engineering - El Shorouk Academy, Egypt.
Abstract
In this paper, using rice husk ash (RHA) in hot mix asphalt (HMA) as filler was evaluated. The main aim of replacing mineral filler is enhancing the performance of asphalt mixes and producing an economical asphalt mix. For this purpose, five different mixes were prepared; the first was a control mix (traditional mix) containing 100% Lime Stone Dust (LSD) as filler and 0% RHA. While, the other mixes contain 25%, 50%, 75% and 100% of RHA as a percentage of the filler weight. Optimum bitumen content (OBC) was determined using Marshall test, also all Marshall parameters (Stability, Air Voids, Voids in Mineral Aggregate, Unit Weight and Flow) were examined. Indirect Tensile Strength Test (ITST) and Wheel Tracking Test (WTT) were conducted and their results were analyzed. Dynamic modulus (│E*│) is considered an important parameter used in mechanistic-empirical pavement design. The │E*|is measured at different temperature/frequency combinations. Dynamic modulus (│E*│) and phase angle (δ) are used for the visco- elastic characterization of HMA. Thus, these properties were measured for mixes with and without RHA. The results indicate that RHA has the potential to be used as partial substitution of mineral filler LSD in pavement construction. Adding RHA enhances Marshall stiffness, reduces rut depth and increases indirect tensile strength values. Further, a significant change has been occurred in OBC for all mixes and the optimum replacement ratio is recorded as 50% RHA: 50% LSD. Finally, mixes containing RHA show higher dynamic modulus values and flow number.
Keywords
Rice Husk Ash; Hot Asphalt Mixes; Dynamic Modulus (E*); Marshall Test; Rut Depth; Indirect Tensile Strength
Statistics
Article View: 371
PDF Download: 907