VALORIZATION AND USE OF INDUSTRIAL WASTES IN BITUMINOUS MIXTURES
References: 12th International Multidisciplinary Scientific GeoConference, www.sgem.org, SGEM2012 Conference Proceedings/ ISSN 1314-2704, June 17-23, 2012, Vol. 4, 821 - 828 pp
ABSTRACT:
In the conditions of our country, in full road infrastructure development, it can be
noticed that the resources of raw materials entering in their composition are getting
scarce. Due to this fact, the idea of creating new techniques and technologies to
determine radical changes in the production methods by using as rationally as possible
secondary resources and thus enhancing the degree of their recycling and reuse through
the so-called waste less technologies gained more and more development.
This paper presents the design and realization of a series of coated macadam types
B.A.16 (maximum grading asphalt concrete 16 mm), which use in their composition,
besides the other composing materials, the fly ash resulted from the CET Timisoara
Sud, by replacing totally or partially the filler. After performing the laboratory tests, it
was shown that the fly ash can successfully replace the filler in the composition of the
coated macadam. Concerning the physical-mechanical characteristics, the following
data can be taken into account: the obtained Marshall stability is higher as compared to
the stability resulted on the coated macadam containing only filler, the flow index
lowers with the increase of the ash percentage, the rigidity module is 40% higher and
the flow stability is 70% higher.
Keywords: coated macadam/fly ash/superior physical-mechanical characteristics
PAPER 2012/s21.v4023: VALORIZATION AND USE OF INDUSTRIAL WASTES IN BITUMINOUS MIXTURES
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