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Evaluation of internal curing effects on concrete

Rodríguez-Torres, Sergio David; Torres Castellanos, Nancy (Universidad Nacional de ColombiaColombia, 2019)

The objective of the present research was the evaluation of some fresh and hardened-state properties of concretes, in which coarse aggregates were partially replaced by lightweight ones previously saturated, in percentages ...
Modelación numérica del comportamiento de la presa del proyecto hidroeléctrico El Guavio

Peña Pinto, Carlos Fernando (Escuela Colombiana de Ingeniería Julio GaravitoMaestría en Ingeniería Civil con Énfasis en Geotecnia, 2015)

This work represents the numerical modeling using finite element software , which performed the behavior of the dam Alberto Lleras , in the hydroelectric project Guavio where a coupled development between stress-strain ...

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Evaluation of internal curing effects on concrete
...
Rodríguez-Torres, Sergio David | 2019

The objective of the present research was the evaluation of some fresh and hardened-state properties of concretes, in which coarse aggregates were partially replaced by lightweight ones previously saturated, in percentages of 15 % and 25 %. The lightweight aggregates were calcined clays and crushed clay bricks. In parallel, the effect of an internal curing agent composed of superabsorbent polymers (SAP) was evaluated. The properties evaluated in the fresh and hardened-state of concretes with a/c of 0,30 were: slum, air content, density, compression resistance, modulus of elasticity, initial superficial absorption and chlorine resistance. Results showed the efficiency of crushed clay bricks as internal curing, as well as the need for deeper research on the use of the evaluated lightweight aggregate as internal curing aggregate in concrete. Results indicate that the crushed clay bricks and the internal curing agent fulfill the behavior expected, in terms of strength and durability. However, the evaluated lightweight aggregate produces a reduction in the resistance and durability of the concrete. The observed behavior in strength and durability is especially variable for the age of 180 days, compared with conventional concretes.

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Modelación numérica del comportamiento de la presa del proyecto hidroeléctrico El Guavio
...
Peña Pinto, Carlos Fernando | 2015

This work represents the numerical modeling using finite element software , which performed the behavior of the dam Alberto Lleras , in the hydroelectric project Guavio where a coupled development between stress-strain analysis and liquid flow is considered ( water ) in the porous medium . The modeling took into account the different circumstances of geometry and loads during the process of construction of the dam by ascending stages , as in his time waiting for the initial filling (about 3 years), during the first filling and , Finally , the operating period for the generation of electricity. To approach the behavior of the two main materials that are part of the dam : Core clay and riprap , mechanical models Modified Cam Clay (MCC ) and linear elastic, respectively were adopted.

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Evaluation of internal curing effects on concrete

Modelación numérica del comportamiento de la presa del proyecto hidroeléctrico El Guavio

Envíos recientes

Evaluation of internal curing effects on concrete

Modelación numérica del comportamiento de la presa del proyecto hidroeléctrico El Guavio

Listar por tema "Asentamiento"

Evaluation of internal curing effects on concrete ﻿

Modelación numérica del comportamiento de la presa del proyecto hidroeléctrico El Guavio ﻿

Envíos recientes

Evaluation of internal curing effects on concrete

Modelación numérica del comportamiento de la presa del proyecto hidroeléctrico El Guavio

Evaluation of internal curing effects on concrete

Modelación numérica del comportamiento de la presa del proyecto hidroeléctrico El Guavio