Study of the Potential of Adhesion to the Substrate of Masonry and Tensile in the Flexion in Mortars of Coating with Gray of the Sewage Sludge

Abstract:

This work evaluates mortars using sewage sludge calcined at temperatures of 600°C and 700°C as a hydraulic binder replacing the cement. The percentages incorporated by mass to replace the Portland cement were 10%, 20% and 30%, using the 1:3:0,60 (cement: sand: factor a/c) trace. Sludge ash was characterized and tensile strength at flexion as well as tensile strength (pullout test) were evaluated. As a way of performing a comparison with conventional mortars, the same tests were carried out using reference mortar. The results of the flexural tensile strength tests indicated that results were higher than the reference traces of the mortars with the calcined sludge at a temperature of 700°C, a factor related to the increase of the calcination temperature and the incorporated percentage. With respect to the tests on the determination of tensile strength, it was observed that the specimens submitted to the test suffered rupture in the mortar, and that the calcination temperature of the sewage sludge was not influenced. The results obtained with the mortars using sewage sludge ash with partial replacement of the cement are shown within the normative standards and approximate to the results obtained with the tests executed with the reference mortar.

• Periodical: Materials Science Forum (Volume 1012)
• Pages: 256-261
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1012.256
• Online since: October 2020
• Authors: João Victor da Cunha Oliveira*, Leila Soares Viegas Barreto Chagas, Frankslale Fabian Diniz de Andrade Meira, Arnaldo Manoel Pereira Carneiro, Antônio Acácio de Melo Neto
• Keywords: Characterization, Mortar, Sewage Sludge Ash

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