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Surface‐Diffusion Theory for Drying Creep Effect in Portland Cement Paste and Concrete
Author(s) -
BAŽANT ZDENĚK P.,
MOSCHOVIDIS ZISSIS
Publication year - 1973
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1973.tb12477.x
Subject(s) - creep , diffusion , materials science , portland cement , adsorption , cement , coupling (piping) , boundary value problem , thermodynamics , composite material , nonlinear system , chemistry , physics , mathematics , mathematical analysis , quantum mechanics
An attempt is made to introduce quantitative analysis into the complex problems of the mechanism of drying creep in cement paste. The main source of creep is assumed to be the change in thickness of hindered adsorbed water layers caused by diffusion of water, coupled with diffusion of solids dissolved from the confining adsorbent particles. The basic equations of equilibrium and irreversible thermodynamics governing the problem are formulated, reduced to an initial‐boundary value problem, and solved numerically. Computer studies have indicated that the drying creep effect is very likely caused by nonlinear coupling between the diffusion of water and that of solids in the hindered adsorbed layers.