Creep Behavior of Borate-Treated Strandboard: Effect of Zinc Borate Retention, Wood Species, and Load Level

Wu, Qinglin; Lee, Ong N; Cai, Zhiyong; Zhou, Dongshan

doi:10.4067/s0718-221x2009000100002

Cited by 8 publications

(6 citation statements)

References 6 publications

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“…10,23 The increased stress levels increase the deflection values as expected. 24 In this work, it was also found that the applied stress levels affect the creep behavior of the OSBs and the 55% stress levels produce more accurate results when compared to actual data. This can be related to the amount of loading required to get more accurate response from the OSBs.…”

Section: Long-term Performance Test Resultsmentioning

confidence: 65%

The usability of Burger body model on determination of oriented strand boards’ creep behavior

Yıldırım

Shaler

West

et al. 2020

Advanced Composites Letters

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In this work, the usability of the Burger body model (BBM) for determining the behavior of oriented strand boards (OSBs) under long-term loads was evaluated. The actual bending strain data and predicted strain data as a function of different stress levels and load durations under constant environmental conditions (25 ± 2°C and 50% relative humidity) were compared. Two test groups, short-term bending tests and long-term creep-rupture bending tests, were performed according to relevant ASTM standards. Specimens were randomly assigned to three groups and loaded at 47% (132.2 kg), 51% (137.4 kg), or 55% (154.9 kg) of the mean static short-term flexural strength. Specimen creep was monitored for 10,000 h using an automated measurement system. The four-parameter BBM parameters were obtained for all specimens at 2000-h time intervals, providing five different estimates. Measured strain values were compared with strain predictions from the BBM and with the goal of evaluating length of experiment on prediction accuracy. Each stress level provided statistical differences based on the error between the actual strain and predicted strain values. Group 3 provided minimum error compared to group 1 and group 2. The 10,000 and 8000 h loading provided the most accurate predictions compared to 6000, 4000, and 2000 h of data. Overall, the longer the actual data is collected the more accurate predictions were obtained. As a result, the BBM was found useful tool for predicting the creep behavior of OSBs under different loads and load durations. It was also shown that the increased duration of practical loading minimizes the error between the prediction. Therefore, the BBM is suggested for use predicting the creep behavior of OSBs over 8000 h load durations.

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Section: Long-term Performance Test Resultsmentioning

confidence: 65%

The usability of Burger body model on determination of oriented strand boards’ creep behavior

Yıldırım

Shaler

West

et al. 2020

Advanced Composites Letters

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“…The study of the creep behavior of materials such as polymer fibers, Raffia vinifera fibers, wood and composites has been approached using some rheological models such as Maxwell, Kelvin, Zener and Burger. 32,33…”

Section: Methodsmentioning

confidence: 99%

“…32 The study of the creep behavior of materials such as polymer fibers, Raffia vinifera fibers, wood and composites has been approached using some rheological models such as Maxwell, Kelvin, Zener and Burger. 32,33 Table 1 summarizes some rheological models used for the creep behavior. We note the presentation of the different models as well as their respective expressions.…”

Section: Study Of Creep Behaviormentioning

confidence: 99%

Physico-chemical and mechanical characterization of bambusa vulgaris fibers from Cameroon

Tagne

Abessolo

Harzallah

et al. 2021

Journal of Composite Materials

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In this study on characterization of bambusa vulgaris fibers from Cameroon (BV), we evaluated the linear density as well as the moisture uptake. With the help of SEM, the cross-sections were observed to be circular shapes; they increase from outside to inside in any transverse position along the stem. Also, the degradation temperature of BV was investigated with the aid of TGA and the result showed that the degradation temperature of BV fibers is between 366 °C and 380 °C. In addition, their Young's moduli in dynamic tensile test was determined and it was noticed that the Young moduli increase from inside to outside. The bending tests of BV fibers were carried out and enable the various parameters in zone 3/3. Finally, the creep behavior of BV fibers was studied and it was revealed that the 4-element Burger model describes very well this phenomenon and could help in well predicting fatigue behaviour of BV fibers reinforced composites.

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“…Using experimental data for tested Groups I and II in this study, stress equivalency coefficients, a, b and c, were calculated using Levenberg-Marquart (LM) algorithm, namely: Nonlinear Least Squares Minimization (Betten, 2008, Bewick, 2003. The values of these constants are listed in Fridley (1992) presented the following creep model (Wu 2009;Pierce 1977) as the original form of the four-element model presented in Equation 5.15 before simplifying it by Taylor (1996) in the form of creep constants A 1 , A 2 , A 3 and A 4 .…”

Section: Proposed Viscoelastic Creep Modelmentioning

confidence: 99%

Flexural Creep Effects On Permanent Wood Foundation Made Of Structural Insulated Foam-Timber Panels

Ahmed¹

2021

Preprint

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A Permanent Wood Foundation (PWF) is a panel composed of expanded polystyrene insulation and preserved stud cores laminated between oriented-strand boards and preserved plywood. This thesis presents the experimental testing on selected PWFs' sizes to investigate their long-term creep behaviour under sustained soil pressure. The long-term creep tests were performed over eight months, followed by loading the tested panels to destruction to determine their axial compressive strength. The ultimate load test results showed that the structural qualification of PWF is "as good as" the structural capacity of the conventional wood-frame buildings. The obtained experimental ultimate compressive resistance and flexural resistance, along with the developed long-term creep deflection of the wall under lateral soil pressure can be used in the available Canadian Wood Council (CWC) force-moment interaction equation to establish design tables of such wall panels under gravity loading and soil pressure.

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Creep Behavior of Borate-Treated Strandboard: Effect of Zinc Borate Retention, Wood Species, and Load Level

Cited by 8 publications

References 6 publications

The usability of Burger body model on determination of oriented strand boards’ creep behavior

The usability of Burger body model on determination of oriented strand boards’ creep behavior

Physico-chemical and mechanical characterization of bambusa vulgaris fibers from Cameroon

Flexural Creep Effects On Permanent Wood Foundation Made Of Structural Insulated Foam-Timber Panels

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