Deformational Properties of Polymer Concrete during Long-Term Exposure to Water

Authors: Aniskevich K.1; Hristova J.2; Jansons J.1

Source: Mechanics of Composite Materials, Volume 39, Number 2, March 2003 , pp. 111-118(8)

Publisher: Springer

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Abstract:

Changes in the elastic and viscoelastic (creep) characteristics of polymer concrete and its structural components (polyester resin, unfilled or filled with diabase flour) during a long-term exposure to water at 20°C were studied. Modeling the structural changes in polymer concrete with time showed an increase in the relative volume content of pores filled with water and a decrease in that of unfilled pores. Based on the free-volume concept and the data on swelling due to moistening and shrinkage due to physical aging of the binder, a rather accurate estimate of the time-moisture reduction function for polymer concrete was obtained. The function was found to be nonmonotonic: the interval of increase was followed by an interval of decrease.

Keywords: creep; aging; water; polyester resin; polymer concrete

Language: English

Document Type: Research article

Affiliations: 1: Institute of Polymer Mechanics, University of Latvia, Riga, LV-1006, Latvia 2: Central Laboratory of Physicochemical Mechanics, Sofia, Bulgaria

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