Alexandra M. da Silva, Jorge de Brito, Rosário Veiga, Incorporation of
fine plastic aggregates in rendering mortars, Construction and Building
Materials, Volume 71, 30 November 2014, Pages 226-236, ISSN 0950-0618,
http://dx.doi.org/10.1016/j.conbuildmat.2014.08.026.
(http://www.sciencedirect.com/science/article/pii/S0950061814009374)
Abstract: The increasing growth of plastic in our Society has triggered
the search for methods to solve the industry?s waste disposal. The
interest of recycling this material, both in ecologic and economical
terms, is not only due to its aggressiveness towards the environment but
also to its high volume of landfilled material along with the fact that
it is non-biodegradable.

This paper approaches these issues within the context of sustainable
development, considering a new application for plastic waste and
studying the effects of its incorporation in mortars. Three substitution
ratios of recycled plastic for natural aggregate have been considered,
5%, 10% and 15%. This substitution was made in volume and only in the
1?2 mm fraction. This research also studied two types of PET
aggregates, PP and PF aggregates that stand for plastic pellets and
plastic flakes.

The results show that, although the incorporation of plastic aggregates
led to a worse performance in some properties, in others the modified
mortars revealed a significantly improved performance in comparison with
the control mortar (without plastic).
Keywords: Mortar; Renderings; Modified coating mortars; Recycling;
Plastic waste; Plastic aggregates; PET; Performance