Title: Heat of Hydration Effects in Concrete Structures

Author(s): F. A. Branco, P. Mendes, and E. Mirambell

Publication: Materials Journal

Volume: 89

Issue: 2

Appears on pages(s): 139-145

Keywords: compressive strength; concrete construction; models; cracking (fracturing); heat of hydration; modulus of elasticity; setting (hardening); stress analysis; temperature; tensile stress; thermal properties; Materials Research

DOI: 10.14359/2105

Date: 3/1/1992

Abstract:
The setting and hardening process of concrete is accompanied by the development of heat of hydration temperatures. These present nonlinear distributions leading to tensile stresses that may exceed the strength of the young concrete, and cracks occur. In this paper, a numerical method is presented, to obtain the hydration temperatures and stress evolution during the first days, after concreting, considering the environment interaction and the concreting phases. The heat of hydration characteristics, to be implemented in the model, are obtained from a specific study with insulated concrete cube tests.