Efecto de la adición de caliza en la retracción química de pastas de cemento blanco a edad temprana

Detalles del proyecto

Descripción

The volumetric changes in cementing materials generate subsequent cracks and possible catastrophic failures in the structures built with this type of material. within volume changes there are ones that are of the volume loss type and are known as retraction phenomena. the retraction of a cement paste begins at the moment in which the hydration of the cement begins to be carried out, this means that from the first hours in which the water-cement mixture is made, small cracks can be created that the time can grow and generate irreparable damages in structures. one of the mechanisms of retraction in cement paste is due to the mineralogical composition of the material and is responsible for the change in volume and the cracks formed in the first hours of hydration.this phenomenon is known as chemical retraction. the white cements that are commonly obtained in the colombian market have high limestone content, making them a type i cement, according to the classification of the astm c 150 standard, which generates a decrease in the economic and environmental cost of this cement. in this project, a study will be carried out on the effect that the addition of limestone has on the chemical retraction of white cement pastes during the first 24 hours of hydration. with this it will be possible to determine the effect of the addition of limestone on the chemical retraction and, therefore, of durability of the material.which generates a decrease in the economic and environmental cost of this cement. in this project, a study will be carried out on the effect that the addition of limestone has on the chemical retraction of white cement pastes during the first 24 hours of hydration. with this it will be possible to determine the effect of the addition of limestone on the chemical retraction and, therefore, of durability of the material.which generates a decrease in the economic and environmental cost of this cement. in this project, a study will be carried out on the effect that the addition of limestone has on the chemical retraction of white cement pastes during the first 24 hours of hydration. with this it will be possible to determine the effect of the addition of limestone on the chemical retraction and, therefore, of durability of the material.

Objetivo

Determinar el efecto de la adición de caliza en la retracción de pastas de cemento blanco en edad temprana, comparando un cemento blanco comercial (que tiene adición de caliza) con un cemento producido a partir de clínker blanco (sin adición de caliza) para tres niveles de relación agua / material cementante.

Resultados esperados

Artículo isi wos o scopus, aceptado. estudiante de pregrado. este proyecto generará resultados académicos y científicos únicamente. esta propuesta avanza en el tema de retracción química en cemento en edad temprana, involucrando una aditivo mineral de uso corriente, que no ha sido evaluado en fenómenos de este tipo a edad temprana.
EstadoFinalizado
Fecha de inicio / finalización efectiva5/07/1620/07/17

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