The Effect of Tire-Rubber Pretreatment on the Physical-Mechanical Properties and Durability of High-Performance Concrete

Author(s)

da Silva, Fabiana Maria ; Batista, Lucas Silveira ; Gachet, Luisa Andrea ; Cecche Lintz, Rosa Cristina

• Document type: Journal article
• Source: JOURNAL OF MATERIALS IN CIVIL ENGINEERING; v. 34, n. 12, p. 12-pg., 2022-12-01.

Abstract

High-performance concrete (HPC) is known as a material of high strength and high durability. This investigation is focused on the influence of the use of rubber waste tires on the physical, mechanical, and durability characteristics of HPC. Tire-rubber residues were used in the contents of concrete at 7.5%, 15%, and 30% in relation to the sand mass. Eleven mixtures were tested in the experimental program. To improve the mechanical strength of rubberized concrete, superficial treatment of the rubber was carried out with calcium carbonate and silica fume. From the results obtained, the following are notable: reduction of the area between the rubber and the cement paste, increased resistance to compression and traction of the concrete with treated rubber, and lower water absorption value and void index, evidencing the benefit of this type of surface treatment. Regarding the durability, electrical resistivity, chloride ion penetration, and carbonation tests, high-strength rubberized concrete shows the potential to be used in aggressive environments. (AU)

• FAPESP's process: 18/12076-5 - STUDY OF ACUSTIC ABSORPTION OF CONCRETE BARRIERS WITH THE ADDITION OF RUBBER AND VERMICULITE RESIDUES
• Grantee: Rosa Cristina Cecche Lintz
• Support Opportunities: Regular Research Grants
• FAPESP's process: 18/14945-0 - SELF-COMPACTING LIGHT CONCRETE WITH EXPANDED CLAY AND EXPANDED POLYSTYRENE
• Grantee: Luísa Andréia Gachet
• Support Opportunities: Regular Research Grants