Natural Additive to Retard the Setting of a Mortar and Increase its Resistance

Abstract:

The use of better materials is essential for the development of a country, that is why in this work we analyze a mixture of cement-based mortar with an addition of mucilage from a plant called Maralfalfa, said plant is used as feed for cattle and it is thought that its hydrate content can improve the water-cement reaction. Two mixtures were made, one control and another with the addition. The material used was: volcanic sand from Michoacán, cement CPC 30R RS, drinking water and the addition of mucilage. Cubic specimens (5x5x5 cm), prismatic specimens (4x4x16 cm) and briquettes were made, which were tested at 7, 14, 21, 28, 45 and 70 days of age. The tests performed were non-destructive (density, ultrasonic pulse rate and electrical resistivity) and destructive (simple compression, flexion and tension). The density results indicate that the mixture with addition densifies the cement matrix, the ultrasonic pulse velocity results are very similar between the mixtures, the results of electrical resistivity indicate that the control mixture is slightly higher. In terms of simple compression and flexion, it is indicated that the mixture with the addition was higher than the control, whereas the voltage results indicate the opposite. In addition, it was found that the addition retards the setting time of the mixture.

• Periodical: Key Engineering Materials (Volume 841)
• Pages: 119-123
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.841.119
• Online since: May 2020
• Authors: Noel Díaz-González, Luis Alberto González Luna, Elia Mercedes Alonso Guzmán, Wilfrido Martínez Molina, Hugo Luis Chávez-García*, Judith Alejandra Velázquez Perez
• Keywords: Additive, Cement, Fraguado, Maralfalfa, Mortar

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