Journal
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
Volume 25, Issue 4, Pages 519-529Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)MT.1943-5533.0000606
Keywords
Recycled aggregates; Coating mortars; Used tires
Categories
Funding
- National Laboratory of Civil Engineering
- firm Recipneu
- firm Biosafe
- ICIST Research Institute
- Instituto Superior Tecnico
- Technical University of Lisbon
- FCT (Foundation for Science and Technology)
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Changing lifestyles over the past few decades have brought about an increase in the types and volume of waste. Nowadays, waste is considered one of the world's main problems. The incorporation of waste in structural and nonstructural elements has therefore been studied, primarily in renders. However, data are scarce on the influence of using rubber aggregates from shredded tires in mortars. This work presents a performance-based analysis to test the viability of using these modified mortars for wall coatings. It presents unprecedented analyses of some durability-related properties and the influence of the crushing process in the overall performance of mortars incorporating rubber. Even though the results show, as expected, that the incorporation of rubber particles is detrimental to both compressive and flexural strength, those changes do not impair its use as renders under normal conditions. Furthermore, the incorporation of rubber leads to a significant reduction of the modulus of elasticity of the mortar. The added rubber also improves its impact-resistance characteristics and some other durability characteristics of these modified mortars compared with those of conventional mortars, which shows that this could be a future viable alternative for wall coatings. DOI: 10.1061/(ASCE)MT.1943-5533.0000606. (C) 2013 American Society of Civil Engineers.
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