Abstract
The subject of this paper is the compressive creep behavior of viscoelastic materials, such as high-density polyethylene (HDPE), commonly used to manufacture a multitude of civil engineering products, including polymeric piling, decking, and fender elements. Accelerated methods to predict the tensile creep of polymers are already available. The time-temperature superposition (TTS) model is the basis of several available methods, and one of its derivatives, the stepped isothermal method (SIM), is the basis for an ASTM standard for tensile creep. In this paper, both TTS and SIM have been adapted to study the time- and temperature-dependent compressive creep of HDPE. Experimental test results on virgin HDPE indicate that both TTS and SIM are applicable for predicting compressive creep with some limitations. Preliminary results indicate that the tested virgin HDPE loaded in compression is expected to creep by approximately 2% in 100 years when loaded to an ultimate stress of 2.8 MPa (400 psi) at room temperature (24°C).
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1154-1162 |
| Number of pages | 9 |
| Journal | Journal of Materials in Civil Engineering |
| Volume | 23 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 3 2011 |
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Keywords
- Creep
- Material properties
- Piles
- Polyethylene
- Temperature effects
- Thermal factors
- Viscoelasticity
ASJC Scopus subject areas
- Building and Construction
- Civil and Structural Engineering
- Materials Science(all)
- Mechanics of Materials
Cite this
Predicting compressive creep behavior of virgin HDPE using thermal acceleration. / Bozorg-Haddad, Amir; Iskander, Magued.
In: Journal of Materials in Civil Engineering, Vol. 23, No. 8, 03.08.2011, p. 1154-1162.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Predicting compressive creep behavior of virgin HDPE using thermal acceleration
AU - Bozorg-Haddad, Amir
AU - Iskander, Magued
PY - 2011/8/3
Y1 - 2011/8/3
N2 - The subject of this paper is the compressive creep behavior of viscoelastic materials, such as high-density polyethylene (HDPE), commonly used to manufacture a multitude of civil engineering products, including polymeric piling, decking, and fender elements. Accelerated methods to predict the tensile creep of polymers are already available. The time-temperature superposition (TTS) model is the basis of several available methods, and one of its derivatives, the stepped isothermal method (SIM), is the basis for an ASTM standard for tensile creep. In this paper, both TTS and SIM have been adapted to study the time- and temperature-dependent compressive creep of HDPE. Experimental test results on virgin HDPE indicate that both TTS and SIM are applicable for predicting compressive creep with some limitations. Preliminary results indicate that the tested virgin HDPE loaded in compression is expected to creep by approximately 2% in 100 years when loaded to an ultimate stress of 2.8 MPa (400 psi) at room temperature (24°C).
AB - The subject of this paper is the compressive creep behavior of viscoelastic materials, such as high-density polyethylene (HDPE), commonly used to manufacture a multitude of civil engineering products, including polymeric piling, decking, and fender elements. Accelerated methods to predict the tensile creep of polymers are already available. The time-temperature superposition (TTS) model is the basis of several available methods, and one of its derivatives, the stepped isothermal method (SIM), is the basis for an ASTM standard for tensile creep. In this paper, both TTS and SIM have been adapted to study the time- and temperature-dependent compressive creep of HDPE. Experimental test results on virgin HDPE indicate that both TTS and SIM are applicable for predicting compressive creep with some limitations. Preliminary results indicate that the tested virgin HDPE loaded in compression is expected to creep by approximately 2% in 100 years when loaded to an ultimate stress of 2.8 MPa (400 psi) at room temperature (24°C).
KW - Creep
KW - Material properties
KW - Piles
KW - Polyethylene
KW - Temperature effects
KW - Thermal factors
KW - Viscoelasticity
UR - http://www.scopus.com/inward/record.url?scp=79961084731&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79961084731&partnerID=8YFLogxK
U2 - 10.1061/(ASCE)MT.1943-5533.0000278
DO - 10.1061/(ASCE)MT.1943-5533.0000278
M3 - Article
VL - 23
SP - 1154
EP - 1162
JO - Journal of Materials in Civil Engineering
JF - Journal of Materials in Civil Engineering
SN - 0899-1561
IS - 8
ER -