Moisture Diffusion in Concrete and Mechanisms of Drying Creep

by Z. P. Bažant, Northwestern Univ, Evanston, United States,
Y. P. Xi, Northwestern Univ, Evanston, United States,
L. Molina, Northwestern Univ, Evanston, United States,

Document Type: Proceeding Paper

Part of: Mechanics Computing in 1990's and Beyond


The Pickett effect is the excess of creep at drying over the sum of shrinkage and basic creep. Several theoretical models have been presented to speculate on the mechanisms of this effect, but there are no experimental data in the literature that could clearly distinguish among the proposed mechanisms in the models. To obtain a direct experimental information on the different mechanisms of the Pickett effect, a series of novel experiments has recently been conducted at Northwestern University.

Subject Headings: Moisture | Diffusion (porous media) | Concrete | Creep | Colleges and universities | Cracking | Shrinkage (material) | Deformation (mechanics)

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