Reduction of consumption of cement in a pumpable concrete with the use of additives and reduction of mortar content

Abstract

The reduction of CO2 emissions in the atmosphere is a topic that is currently on the agenda. For the production of cement, the CO2 emission is quite high since it is used in the concrete composition. For this purpose, the present work aims to show a new methodology that allows the obtaining of pumpable concretes with the same characteristics of the methodology used today, but which has the differential of a significant reduction of the cement used in its production, becoming thus an economically and environmentally correct concrete, reducing the emission of CO2. In order to achieve the desired results, dosage methods were established, where the "dosage I" (pilot dosage) is the same composition used by the selected concrete, in "dosage II" the mortar content was reduced and the "dosage III "we alter the additive used by another with differentiated properties. The results presented in the "dosage II" where reduction of the mortar content were negative, since there was no reduction of the cement consumption, already the "dosage III" where the additive of the dosages was altered, a considerable reduction of cement was obtained, according to the relevant assays for dosing and evaluation of results.