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Title:Effect of temperature on drying of concrete
Author(s):Yuan, Robert L.; Hilsdorf, Hubert K.; Kesler, Clyde E.
Abstract:The drying of concrete, the diminution of its moisture content, is influenced by the properties of the paste matrix and environmental conditions. Since drying is assumed to begin at the exposed surface and extend slowly inward, it follows that the flow of moisture occurs only when there exists a sufficient number of permeable spaces connected to form paths. An experimental investigation was undertaken to check the applicability of the diffusion theory to the drying of concrete. The variables were the water-cement ratio, temperature and relative vapor pressure. Sorption isotherms of moisture were determined for four different mortars. The equilibrium moisture content of the desorption isotherm was obtained by the Ross procedure. Analysis of the data indicates that the constant-coefficient diffusion theory can be applied to describe the drying phenomenon of concrete in the range of temperatures used in the investigation, 40 to 140 F. The drying of concrete is strongly dependent on temperature. For temperatures below 70 F, the magnitude of the diffusion coefficient is in the range of 10-11 to 10-12 m2/sec. Suggestions are included for further studies of the drying of concrete. Investigations of the effect of higher temperatures and of temperature gradients on concrete drying are recommended.
Issue Date:1968-09
Publisher:Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report:TAM R 316
Genre:Technical Report
Rights Information:Copyright 1968 Board of Trustees of the University of Illinois
Date Available in IDEALS:2021-11-04

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  • Technical Reports - Theoretical and Applied Mechanics (TAM)
    TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.

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