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Environmental pollution is a major problem in developing countries
like Egypt. Reuse of waste polymers is considered an attractive
solution for environmental white pollution and reducing of the
costs of road pavement and maintenance. This work show that how to
prepare environmentally friendly hot mix asphalt (HMA) for paving.
The prepared mixes consisted of high absorptive aggregate (not used
in road paving), marble powder (discarded from workshops and
factories) and waste polymers (as asphalt modifiers). To achieve
this aim, asphalt cement of penetration grade 60/70 was modified
with a percentage ranging from 5 to 15% by weight of spent toner
(discarded from photo copier machines), waste polypropylene
(discarded from carpet industry) and polyester (discarded from
printing and packing industries) separately. The prepared HMA had
moderate characteristics compared to ordinary one. Also, high
absorptive aggregate and waste products of industry could be used
in road construction with net result of decreasing maintenance
cost, preservation the premium aggregate for longest period of time
and decrease the space needed for land filling of non degradable
waste materials.
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