Long-Term Prediction of Creep Strain of Expanded Polystyrene |
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| Authors: | I J Gnip V I Kersulis S I Vaitkus S A Veyelis |
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| Institution: | (1) “Thermoinsulation” Institute, Gediminas Vilnius Technical University, Vilnius, Lithuania |
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| Abstract: | Data obtained in investigating the creep of expanded polystyrene in compression are discussed. An analysis of the results
of creep tests 65–608 days long showed that the creep can be predicted for 50 years based on experiments of less duration
than the 605 days indicated in EN 13163. For this purpose, it is suggested to employ a 95-fold extrapolation in time if the
creep curves are described by a power function (as recommended by EN 13163) or a 50-fold extrapolation if the exponential
equation proposed in the present paper is used.
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Translated from Mekhanika Kompozitnykh Materialov, Vol. 41, No. 6, pp. 795–802, November–December, 2005. |
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| Keywords: | expanded polystyrene long-term compression strain creep prediction |
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