A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Compressive creep behavior of EPS geofoam
The time-temperature superposition principle was applied to investigate the compressive creep behavior of expanded polystyrene (EPS) geofoam. Cylindrical samples, 100 mm in diameter and 200 mm in height, were obtained from commercially produced blocks with nominal density of 10, 15, 20, 25, 30 and 35 kg/m3. Tests were conducted in a controlled temperature - humidity chamber at relative humidity equal to 65 % and temperatures of 20, 30, 40 and 50 deg C. Each test had a duration of up to 3 months. Axial loads were applied to produce three different levels of initial axial strain (0.25, 0.50 and 0.75 %) covering the range of elastic behavior of EPS geofoam in monotonic loading. Data were combined to yield creep curves covering a time span of over 100 years at the reference temperature of 20 deg C. The validity of the time-temperature superposition principle for EPS geofoam was verified using the Arrhenius equation. A constitutive relation was obtained describing the linear viscoelastic response of EPS geofoam for normal stress values lower than 30 % of the compressive strength or for initial axial strains less than 0.5 %.
Compressive creep behavior of EPS geofoam
The time-temperature superposition principle was applied to investigate the compressive creep behavior of expanded polystyrene (EPS) geofoam. Cylindrical samples, 100 mm in diameter and 200 mm in height, were obtained from commercially produced blocks with nominal density of 10, 15, 20, 25, 30 and 35 kg/m3. Tests were conducted in a controlled temperature - humidity chamber at relative humidity equal to 65 % and temperatures of 20, 30, 40 and 50 deg C. Each test had a duration of up to 3 months. Axial loads were applied to produce three different levels of initial axial strain (0.25, 0.50 and 0.75 %) covering the range of elastic behavior of EPS geofoam in monotonic loading. Data were combined to yield creep curves covering a time span of over 100 years at the reference temperature of 20 deg C. The validity of the time-temperature superposition principle for EPS geofoam was verified using the Arrhenius equation. A constitutive relation was obtained describing the linear viscoelastic response of EPS geofoam for normal stress values lower than 30 % of the compressive strength or for initial axial strains less than 0.5 %.
Compressive creep behavior of EPS geofoam
Kompressives Kriechverhalten von EPS Geoschaum
Missirlis, E.G. (author) / Atmatzidis, D.K. (author) / Chrysikos, D.A. (author)
2004
6 Seiten, 11 Bilder, 14 Quellen
Conference paper
English
Compressive, creep, behavior, of, EPS, geofoam
| British Library Conference Proceedings | 2004
The compressive creep behavior of an expanded polystyrene geofoam
| British Library Conference Proceedings | 2006
Effect of Confinement on Creep Behavior of EPS Geofoam
| British Library Online Contents | 2014
| Tema Archive | 1999