USE OF WASTE POLYETHYLENE AS A BITUMEN MODIFIER IN ASPHALT CONCRETE MIXTURES | ||||
The International Conference on Civil and Architecture Engineering | ||||
Article 51, Volume 9, 9th International Conference on Civil and Architecture Engineering, May 2012, Page 1-10 PDF (196.37 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/iccae.2012.44387 | ||||
View on SCiNiTO | ||||
Authors | ||||
A. El-Desouky1; A. Abbas2; L. Radwan3; O. Moursi4 | ||||
1Assoc. Prof., Dept. of Civil Engineering, Military Technical College, Cairo, Egypt. | ||||
2Ph.D. Candidate, Dept. of Civil Engineering, Military Technical College, Cairo, Egypt. | ||||
3Prof., Dept. of Public Works, Faculty of Engineering, Cairo University, Giza, Egypt. | ||||
4Prof., Dept. of Civil Engineering, Military Technical College, Cairo, Egypt. | ||||
Abstract | ||||
ABSTRACT The main objective of this research is to study the possibility of using plastic wastes containing medium density polyethylene (MDPE) as polymer additives to asphalt concrete. It was investigated that the influence of MDPE -modified binder obtained by various mixing time, mixing temperature and MDPE content on the Marshall Stability, flow and Marshall Quotient (Stability to flow ratio). The binders used in Hot Mix Asphalt (HMA) were prepared by mixing the MDPE in 4 and 6% (by the weight of optimum bitumen content) and AC-60/70 at temperatures of 155 and 165 C for 5 min and 10 min of mixing time. MDPE-modified asphalt concrete results in a significant increase in the Marshall Stability value and a Marshall Quotient value. The 4 % MDPE, 165C of mixing temperature and 10 min of mixing time were determined as optimum conditions for Marshall Stability, flow and Marshall Quotient (MQ). MQ increased by 30% compared to control mix. It can be said that waste MDPE-modified bituminous binders provide better resistance against permanent deformations due to their high stability and high Marshall Quotient and it contributes to recirculation of plastic wastes as well as to safety of the environment. | ||||
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