Coupled effect of waste tire rubber and steel fibers on the mechanical properties of concrete

Author:

Waris Mohsin Adeel1,us Sahar Umbreen1,Akmal Usman1,Khurram Nauman1,Aslam Fahid2,Fathi Dina3

Affiliation:

1. Civil Engineering Department , University of Engineering and Technology , Lahore , Pakistan

2. Department of Civil Engineering , College of Engineering in Al-Kharj , Prince Sattam Bin Abdulaziz University , Al-Kharj , Saudi Arabia

3. Structural Engineering and Construction Management Department, Faculty of Engineering and Technology , Future University in Egypt , New Cairo , Egypt

Abstract

Abstract Studies in the literature indicate that while tire crumb rubber can be added to concrete to replace some natural aggregates, steel fibers need to be introduced to overcome the compromise in the mechanical properties of concrete, especially compressive and tensile strength, that would be caused due to the addition of tire crumb rubber exclusively. In the present study, a minimum content of steel fibers has been added to mitigate the negative impact of addition of tire rubber fibers on the mechanical properties of concrete. The tire rubber fibers content was varied from 1% to 3% by volume whereas steel fibers were added from 0.1% to 0.3% by volume only. In this way, the effectiveness of hybridized concrete using tire rubber and steel fibers was evaluated based on its mechanical properties. The results revealed that inclusion of steel fibers overcame the reduction in strength and toughness of concrete to which tire rubber fibers have been added. Concrete with 2% tire rubber fibers and 0.2% steel fibers showed better mechanical performance in terms of compressive strength (10%), split tensile (14.7%), flexural strength (6.6%), and flexural toughness indices ( T 150 D = 46 % T_{150}^D = 46\% , f 150 D = 45 % f_{150}^D = 45\% ) as compared to the concrete with only 3% tire rubber fibers.

Publisher

Walter de Gruyter GmbH

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

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