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Numerical simulation of dam construction using low-CO2-emission concrete

Numerical simulation of dam construction using low-CO2-emission concrete Cement production gives rise to CO2 emissions generated by the calcination of CaCO3 and by the combustion of fossil fuels, being responsible for about 5% of the global CO2 emissions. These emissions can be substantially reduced if cement replacement materials are used. In this paper two residual ashes that can be used as mineral additions are considered: sugar cane bagasse ash and rice husk ash. A case study of the construction of a dam with a blended material composed by cement and these two ashes is presented, indicating the potentiality of its use for civil engineering applications. The analyses were performed using experimental and numerical tools developed on the basis of a thermo-chemo-mechanical model. This model considers the coupling, within the theory of thermodynamics, of the several phenomena that intervene in the hydration process, namely, exothermicity, thermo-activation, chemo-plasticity, evolution of thermal and mechanical properties with the hydration reaction, which includes creep and relaxation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Materials and Structures Springer Journals

Numerical simulation of dam construction using low-CO2-emission concrete

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References (42)

Publisher
Springer Journals
Copyright
Copyright © 2009 by RILEM
Subject
Engineering; Building Materials; Civil Engineering; Operating Procedures, Materials Treatment; Theoretical and Applied Mechanics; Materials Science, general; Structural Mechanics
ISSN
1359-5997
eISSN
1871-6873
DOI
10.1617/s11527-009-9566-z
Publisher site
See Article on Publisher Site

Abstract

Cement production gives rise to CO2 emissions generated by the calcination of CaCO3 and by the combustion of fossil fuels, being responsible for about 5% of the global CO2 emissions. These emissions can be substantially reduced if cement replacement materials are used. In this paper two residual ashes that can be used as mineral additions are considered: sugar cane bagasse ash and rice husk ash. A case study of the construction of a dam with a blended material composed by cement and these two ashes is presented, indicating the potentiality of its use for civil engineering applications. The analyses were performed using experimental and numerical tools developed on the basis of a thermo-chemo-mechanical model. This model considers the coupling, within the theory of thermodynamics, of the several phenomena that intervene in the hydration process, namely, exothermicity, thermo-activation, chemo-plasticity, evolution of thermal and mechanical properties with the hydration reaction, which includes creep and relaxation.

Journal

Materials and Structures – Springer Journals

Published: Dec 2, 2009

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