Open AccessBehavior of predried mature concrete beams subject to partial wetting and drying cycles
Author(s) -
Lenka Dohnalová,
Petr Havlásek,
Vít Šmilauer
Publication year - 2022
Publication title -
acta polytechnica ctu proceedings
Language(s) - English
Resource type - Journals
ISSN - 2336-5382
DOI - 10.14311/app.2022.34.0001
Subject(s) - wetting , materials science , swelling , displacement (psychology) , composite material , deformation (meteorology) , volume (thermodynamics) , geotechnical engineering , reinforcement , geology , thermodynamics , physics , psychology , psychotherapist
The presented research focuses on the behavior of predried concrete beams with 2.5 m span subjected to cycles of nonsymmetric wetting and drying. Wetting is induced by partially immersing the specimens in a water basin. The submerged portion of the specimens was relatively low (1/5 to 1/10 of their height) leading to a highly nonuniform and nonsymmetric distribution of eigenstrains due to concrete swelling. Unlike conventional experiments on the volume changes of concrete, the measured quantity is not the axial deformation but the vertical displacement instead. This paper presents the experimental data obtained within two wetting and drying cycles, running over 1 year.