Study of the use of crushed sand in cementitious composites with EVA and piassava fibers

Moreira, Rafael Nascimento; Souza, Thiago Francisco de; Pessôa, José Renato de Castro; Silva, Everton José da; Amado, Franco Dani Rico

doi:10.1016/j.conbuildmat.2020.120908

Cited by 3 publications

(2 citation statements)

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“…From the foregoing, it can be deduced that the reaction produced in both tensile and compressive strength is attributed to the displacement of the granular material given by the MEVA, resulting a progressive decrease in both strengths, as well as in the density of the concrete, as the MEVA doses increase. This is demonstrated in their respective studies by Khan et al (2019) and Moreira et al (2020).…”

Section: Tensile Strengthmentioning

confidence: 61%

“…Regarding the mechanical properties of concrete with MEVA inclusions, Gregorová et al (2020) describe that the compressive strength with 75.00 % of MEVA residues did not have a significant influence, but the initial qualities of normal concrete are maintained. Despite these results Moreira et al (2020) managed to obtain a considerable increase with 6.00 % of MEVA, in the compressive strength of up to 54.00 % and in the flexural strength it increased up to 59.00 % in relation to the standard concrete; however Khan et al (2019) and Ahmad et al (2022) recommend incorporations of MEVA up to a maximum of 16.00 %; although in the complementary study of Ghally et al (2022) obtained that with 20.00 % of MEVA added to the concrete, a compressive strength of 100.00 MPa can be achieved, that is, almost double the required strength, while in the flexural strength and tensile strength obtained nearly triple the standard strength.…”

Section: Introductionmentioning

confidence: 90%

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Improvement of the Mechanical Properties of Structural Concrete Using Microporous Ethylene Vinyl Acetate

Chaname,

García,

Arriola Carrasco

2024

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Over the years, the world has tried to increase the recycling of materials, especially those of artificial origin, this in order to produce compounds that are sustainable and sustainable. Among these materials, concrete stands out as a versatile element, to which different external agents can be added; however, since many of them are not compatible with aggregates, cement or water, can cause some alterations in their mechanical performance. Therefore, the present investigation addressed the study of an artificial material called Microporous Ethylene Vinyl Acetate (MEVA), in order to evaluate its influence on the mechanical properties of structural concrete. MEVA additions were used in ranges of 5.00 %, 10.00 %, 15.00 % and 20.00 % with respect to the volume of concrete, to analyze its behavior in the mix, both in physical and mechanical properties. The results show that the workability and unit weight are affected by the increase in MEVA. Despite this, the mechanical performance showed significant increases in the compressive strength of 8.81 %, tensile of 22.86 %, flexion of 24.51 % and modulus of elasticity of 2.12 %, with the addition of 5.00 % of MEVA after 28 days. Nevertheless, at higher doses there is a reduction in said strengths. For these reasons, it is concluded that the incorporation of MEVA at 5.00 % greatly improves the mechanical properties of concrete for structural use, in relation to the theoretical design strength of 21.00 MPa.

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Section: Tensile Strengthmentioning

confidence: 61%