Shrinkage Behaviour of Fibre Reinforced Concrete with Recycled Tyre Polymer Fibres

Autor: Marijana Serdar, Ana Baričević, Marija Jelčić Rukavina, Martina Pezer, Dubravka Bjegović, Nina Štirmer
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: International Journal of Polymer Science, Vol 2015 (2015)
Druh dokumentu: article
ISSN: 1687-9422
1687-9430
DOI: 10.1155/2015/145918
Popis: Different types of fibres are often used in concrete to prevent microcracking due to shrinkage, and polypropylene fibres are among the most often used ones. If not prevented, microcracks can lead to the development of larger cracks as drying shrinkage occurs, enabling penetration of aggressive substances from the environment and reducing durability of concrete structures. The hypothesis of the present research is that polypropylene fibres, used in concrete for controlling formation of microcracks due to shrinkage, can be replaced with recycled polymer fibres obtained from end-of-life tyres. To test the hypothesis, concrete mixtures containing polypropylene fibres and recycled tyre polymer fibres were prepared and tested. Experimental programme focused on autogenous, free, and restrained shrinkage. It was shown that PP fibres can be substituted with higher amount of recycled tyre polymer fibres obtaining concrete with similar shrinkage behaviour. The results indicate promising possibilities of using recycled tyre polymer fibres in concrete products. At the same time, such applications would contribute to solving the problem of waste tyre disposal.
Databáze: Directory of Open Access Journals
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