Evaluation of waste materials as alternative sources of filler in asphalt mixtures

There are many different ways to reduce the construction industry’s impact on environment. The incorporation of waste in the fabrication of construction materials may be beneficial for both the waste management sector and the construction industry. The aim of this research was to investigate the use...

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Bibliographic Details
Published in:Materials and structures 2017-12, Vol.50 (6), p.1-13, Article 254
Main Authors: Antunes, V., Freire, A. C., Quaresma, L., Micaelo, R.
Format: Article
Language:English
Subjects:
Bitumens
Building construction
Building Materials
Chemical properties
Civil Engineering
Construction industry
Construction materials
Demolition
Engineering
Environmental impact
Fly ash
Limestone
Machines
Manufacturing
Materials Science
Original Article
Processes
Solid Mechanics
Stiffening
Test procedures
Theoretical and Applied Mechanics
Waste disposal
Waste management
Waste materials
Water damage
Water resistance
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Summary:There are many different ways to reduce the construction industry’s impact on environment. The incorporation of waste in the fabrication of construction materials may be beneficial for both the waste management sector and the construction industry. The aim of this research was to investigate the use of three different waste materials (construction and demolition waste, brick powder and fly ash) as filler in asphalt mixtures. Limestone filler was used as reference material. The materials were characterized in terms of their geometrical, physical and chemical properties, and the interaction with bitumen was assessed with two mastic test methods using four different bitumens. The specific surface of waste materials shows a wide-ranging variation due to material specific shape and texture of particles. However, the Rigden voids and bitumen number tests adequately measure the stiffening effect of these materials. The delta ring and ball test results showed there is a good relation with the filler content when the results are affected by the bitumen type. The f / b ratio for a specific bitumen–filler combination can be determined from the maximum filler-to-bitumen ratio and the recommended stiffening increase. The mastics with these waste materials showed strong resistance to water damage.
ISSN:1359-5997
1871-6873
DOI:10.1617/s11527-017-1126-3