Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 25, Issue 2, Pages 992-1000Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2010.06.080
Keywords
Admixture; Durability; Freezing and thawing; Mechanical properties; Lime mortar; Polypropylene fibre
Categories
Funding
- Ministry of Education and Science of Spain [MAT2007-65478]
- FUNA (Fundacion Universitaria de Navarra)
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A polypropylene fibre was added to lime-based mortars in order to check whether they were improved by this admixture. Different properties of lime-based mortars were evaluated: fresh state behaviour through water retention, air content and setting time: hardened state properties such as density, shrinkage, water absorption through capillarity, water vapour permeability, long-term flexural and compressive strengths, pore structure through mercury intrusion porosimetry, and durability assessed by means of freezing-thawing cycles. An improvement in some properties of aerial lime-based mortars - such as permeability, mechanical strengths, reduction in macroscopic cracks or durability in the face of freezing-thawing cycles - was achieved when fibre was added at a low dosage. When a larger amount of additive was used, only the reduction in cracks and the durability of the material were improved. (C) 2010 Elsevier Ltd. All rights reserved.
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