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Durability of Rubberized Concrete with Recycled Steel Fibers from Tyre Recycling in Aggresive Enviroments by Darío Flores Medina; M. Carolina Hernández Martínez; Nelson Flores Medina; F. Hernández-Olivares is a Engineering article available to read on EtoBox.

What is Durability of Rubberized Concrete with Recycled Steel Fibers from Tyre Recycling in Aggresive Enviroments about?

An assessment of the chemical and physical behavior of rubberized concrete (RuC) during natural carbonation exposure, freeze–thaw degradation and acid degradation (sulfuric and acetic acid (C2H4O2)) with two types of crumb rubber aggregates, is presented: crumb rubber (CR) containing only rubber; and fibers partially coated with crumb rubber (FCR). The mixtures studied with rubberized concrete reach the point of total substitution of stone aggregate (0/20/40/60/80/100 vol%). To analyze and understand the behavior of concrete, physical and mechanical properties have been also studied and related. Weight loss and ultrasonic pulse test were done throughout 3 months in rubberized concrete under accelerated attack, and strength variation recorded after the tests. As well, Scanning Electron Microscope images have been studied after the degradation processes tested. The use of CR and FCR reduces mechanical strength and increases porosity, but rubberized concrete with CR aggregates presents lower carbonation when volume is over 80% and strength reductions stability improves when FCR are used in freeze–thaw attack and under acid corrosion environments, as fibers improve matrix cohesion. Mor

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Author

Darío Flores Medina; M. Carolina Hernández Martínez; Nelson Flores Medina; F. Hernández-Olivares

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)