Análisis del proceso de hidratación del cemento de resistencia a los sulfatos de una marca de cemento ecuatoriana : Revisión de estado del arte, muestreo de muestras para pruebas y ensayos básicos de cementos en los tres tipos de cemento.

Abstract

In the present work, will realize an analysis of the hydration process of type V cement or type HS cement, which is sulfate-resistant cement. Which study is conducted from the manufacture of mortar and concrete to then carry out various physical and chemical tests that will allow conclusions and results to be generated with respect to the investigation. Once the specimens are manufactured, they are tested under compression and, in the case of cylinders, they will be tested additionally under indirect traction, for the ages of 7, 28 and 56 days. With these results, a hardening curve will be obtained that helps to evaluate the mechanical behavior of the cement at different ages. By means of X-ray diffraction, diffractograms are obtained where the presence of compounds such as: ettringite, tobermorite, portlandite, among others, can be observed. Compounds that were expected to have through hydration and that are especially important to evaluate the hydration process and the hardening phases. These compounds and the amount of these at different ages show how this cement acts in the presence of water, generating a lower amount of ettringite in its initial phase to generate less expansive matter and therefore less cracking, which is key for this type of HS cement is resistant to sulfates because it is less permeable.