WIT Press


Damaging Of Hydrating Concrete

Price

Free (open access)

Paper DOI

10.2495/LD940251

Volume

6

Pages

8

Published

1994

Size

645 kb

Author(s)

J. Huckfeldt

Abstract

Damaging of hy drat ing concrete J. Huckfeldt Department of Structural Analysis, Technical University of Braunschweig, Beethovenstrafte 51, D-38106 Braunschweig, Germany ABSTRACT The hydration process of young concrete is a coupled thermomechanical problem. Du- ring the formation of hydration products, heat is liberated and causes thermal expansions while material properties are still developing. If the restraint stresses exceed the tensile strength, cracks may occur. In this paper numerical details concerning the various non- linearities and the application to practical problems of massive concrete structures are discussed. INTRODUCTION The thermomechanical approach is based on the process-kinetics of thermically activated processes and the thermodynamics of irreversible processes. When adding mixing water to cement, the hydration process of young concrete is activated. During this exothermic process the concrete develops its mechanical characteristics and is exposed to thermal ac

Keywords