USE OF WASTE POLYESTER FIBERS TO ENHANCE RUTTING RESISTANCE OF ASPHALT CONCRETE MIXTURES

Document Type : Original Article

Authors

1 Assoc. Prof., Dept. of Civil Engineering, Military Technical College, Cairo, Egypt.

2 Ph.D. Candidate, Dept. of Civil Engineering, Military Technical College, Cairo, Egypt.

3 Prof., Dept. of Public Works, Faculty of Engineering, Cairo University, Giza, Egypt.

4 Prof., Dept. of Civil Engineering, Military Technical College, Cairo, Egypt.

Abstract


ABSTRACT
The vast amount of waste materials such as polyester waste fibers accumulating throughout the
world is creating costly disposal problem. The use of these materials was proved to be
economical, environmentally and effective in increasing the performance properties of the asphalt
mixture in new years. The main objective of this research was to determine whether
homogeneously dispersed waste polyester fibers improve Marshall stability and rutting resistance
of asphalt concrete mixtures containing various lengths and percentages of the fiber. The
experimental design included the use of available aggregates, and polyester waste fibers as
additives to enhance the properties of asphalt mixtures. Two fiber lengths of 1cm and 2 cm were
used with four different fiber contents of 0.2%, 0.35%, 0.50% and 0.65 by weight of total
mixture. The results of the experimental work presented in this paper suggested that, in general,
the addition of the polyester fiber s was beneficial in improving both the stability and rutting
resistance of the modified asphalt mixtures.

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