Title:
Concrete with Used Tire Rubber Aggregates: Mechanical Performance
Author(s):
Filipe Valadares, Miguel Bravo, and Jorge de Brito
Publication:
Materials Journal
Volume:
109
Issue:
3
Appears on pages(s):
283-292
Keywords:
mechanical performance; sustainability; used tire rubber aggregate.
DOI:
10.14359/51683818
Date:
5/1/2012
Abstract:
The research presented herein set out to evaluate the mechanical performance of concrete made with different percentages of used tire rubber aggregate (5, 10, and 15% of the total volume of aggregate) and analyze the influence of the size of the aggregates (fine, coarse, or both) and the grinding process (mechanical or cryogenic). This is an environmentally positive alternative to dumping used tires and contributes to preserving natural resources (sand and gravel). Fresh concrete was analyzed for workability and density. Hardened concrete was tested for compressive strength, splitting tensile strength, modulus of elasticity, and wear by abrasion resistance. It is concluded that the incorporation of rubber aggregate generally leads to worse mechanical performance than conventional concrete, except for abrasion resistance. Some improvement is found with the change from fine to coarse rubber aggregate.