MECHANICAL PROPERTIES AND CREEP CHARACTERISTICS OF WOOD/PVC COMPOSITES AT DIFFERENT TEMPERATURES
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN COMPUTING, ELECTRONICS AND ELECTRICAL TECHNOLOGY
Author(s): SOMCHAI CHUCHEEPSAKUL , NARONGRIT SOMBATSOMPOP , SOMJATE PATCHARAPHUN , TAWICH PULNGERN , THANAPHON CHITSAMRAN
Abstract: This paper investigated the effect of temperature on the mechanical properties and tensile creep response of Wood/PVC (WPVC) composite materials. The tensile, compressive, and flexural properties were measured at room temperature, 40°C, 50°C, 60°C and 70°C, respectively. The short term tensile creep at different temperatures was also investigated to obtain the creep characteristics of WPVC composites using power law models. The experimental results summarized that all mechanical properties of WPVC composites decreased significantly by an increasing in temperature, especially for the applied temperatures with higher than 50 °C. The tensile creep models of WPVC composites were obtained for both time-stress dependent and time-stress-temperature dependent. These creep models can be used to predict the long term deformation of WPVC composites for the design phase of WPVC composite structural member.
- Publication Date: 21-Dec-2014
- DOI: 10.15224/978-1-63248-006-4-66
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THE TIME-DEPENDENT PERFORMANCE OF DREDGED MARINE SEDIMENTS REUSED FOR BACKFILLING: INITIAL REST PERIOD
Published In: INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL AND STRUCTURAL ENGINEERING
Author(s): CHEE-MING CHAN
Abstract: Dredged marine sediments (DMS) are usually disposed of in open sea, inadvertently causing contamination and destruction of the marine ecosystem. Some of these adverse effects are long term, far-reaching and irreversible. However the DMS, if suitably assessed and managed, can be potentially reused as a backfill material with sufficient soundness and safety. Applications include reclamation and shoreline rehabilitation works, where artificial land is created using the DMS. Due to the very soft or slurry form of the material, significant subsidence is expected in a backfilled embankment, as the soil undergoes sedimentation and self-weight consolidation. This would be followed by time-dependent regain of hardness, hence strength and stiffness, under constant water content or volume condition, also known as ‘thixotropic hardening’. It is imperative to know this time-dependent characteristic of the DMS for efficient reuse, where the time required for sufficient strength and stiffness regain
- Publication Date: 03-Aug-2014
- DOI: 10.15224/978-1-63248-006-4-119
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- Downloads: 0