Assessment of the Mechanical Parameters of Resin Composites with the Addition of Various Types of Fibres.

Bernardeta Dębska,Guilherme Jorge Brigolini Silva,Lech Lichołai,Marina Altoé Caetano

doi:10.3390/ma13061378

Bernardeta Dębska, Guilherme Jorge Brigolini Silva + Show 2 more

Open Access

https://doi.org/10.3390/ma13061378

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Abstract

The article describes tests of epoxy mortars after the addition of fibres. The fibres were a substitute for sand in the amount of 0, 1, 2, 3, 4 and 5% by volume, respectively. Three types of mortar were obtained, containing polypropylene, glass and carbon fibres, respectively. Statistical analyses (ANOVA) were carried out to assess the impact of fibre content on the mechanical properties of mortars. Brittle fracture toughness was also tested using the Cracked Straight Through Brazilian Disc method. The addition of each type of fibre improved the assessed parameters. Based on the obtained research results, and also due to availability and price, the most advantageous seems to be the production of composites containing the addition of polypropylene fibres.

Highlights

Resin concretes and mortars are composites that do not contain cement
Among the mortars containing fibres, the lowest values of compressive strength were to 100.98 MPa, Among the mortars containing the lowest characterized byrespectively. Those that were modified with carbon fibres. fibres, Comparing thesevalues resultsof tocompressive the studies strength were characterized by those that were modified with carbon fibres. Comparing these results described in the literature, whose authors [20] stated that the addition of polypropylene fibres to to the studies described in the literature, whose authors stated that the addition of polypropylene epoxy mortars gives the best effects at a content of 0.8% and allows the obtaining of compressive fibres toatepoxy givesitthe effects at they a content of 0.8%
Not exceeding addition compared to the results presented in this article, was characteristic of polyester mortars obtainedof recycled compared to the results presented in this article, was characteristic of polyester by Ribeirofibres), et al [1]

Summary

Introduction

Resin concretes and mortars are composites that do not contain cement. The binder in this type of materials is a synthetic resin, most often polyester, epoxy, and less often acrylic. Resin concretes are characterized by very high compressive strength (over 100 MPa) and bending strength, as well as very good chemical resistance. Their characteristic feature is the short time needed to achieve operational efficiency and their good adhesion to various building materials [4,9]. Their high strength-to-weight ratio, good damping properties and ability to form complex shapes make them ideal for prefabrication [10,11]

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