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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REFERENCES
I. J. Gnip, V. I. Kersulis, and S. I. Vaitkus, “Analytical description of the creep of expanded polystyrene under compressive loading,” Mech. Compos. Mater., 41, No.4, 357–364 (2005).
EN 1606+AC:1997 E. Thermal Insulating Products for Building Applications. Determination of Compressive Creep (1997).
EN 13163:2001 E. Thermal Insulation Products for Buildings. Factory Made Products of Expanded Polystyrene (EPS). Specification (2001).
J. Martino, Technological Prediction [Russian translation], Progress, Moscow (1977).
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Translated from Mekhanika Kompozitnykh Materialov, Vol. 41, No. 6, pp. 795–802, November–December, 2005.
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Gnip, I.J., Kersulis, V.I., Vaitkus, S.I. et al. Long-Term Prediction of Creep Strain of Expanded Polystyrene. Mech Compos Mater 41, 535–540 (2005). https://doi.org/10.1007/s11029-006-0007-6
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DOI: https://doi.org/10.1007/s11029-006-0007-6