Effect of Board density and industrial wood particles to cement ratio on mechanical and physical properties of wood cement composite boards

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GHOFRANI M.; FAZELI A.

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Journal Paper

Paper Information

Journal: Iranian Journal of Wood and Paper Science Research Year:2021 | Volume:35 | Issue:4 (73) Page(s): 362-375

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Information Journal Paper

Title

Effect of Board density and industrial wood particles to cement ratio on mechanical and physical properties of wood cement composite boards

Author(s)

GHOFRANI M. | FAZELI A. | Issue Writer Certificate

Keywords

Wood cement compositesQ1

bending propertiesQ2

internal bondingQ2

dimensional stabilityQ1

Abstract

This study was carried out to investigate the effect of two board density levels of 800 kg/m3 and 1100 kg/m3 and two levels of industrial wood to cement ratios of 25: 75 and 35: 65 on mechanical and physical properties of Wood cement composites. Boards were produced and then the density of boards were calculated. The experimental boards were subjected to modulus of elasticity and modulus of rupture tests in accordance with EN 310. internal bonding was evaluated according to EN 319. Water absorption and thickness swelling were evaluated after 2 and 24 hours immersion in water according to EN 317. Fire resistance was evaluated according to ISO 11925. Results indicated that bending properties of the boards, including modulus of elasticity and modulus of rupture, and internal bonding increased at higher density. That was attributed to the high compression and improved binding between fiber and cement matrix. Modulus of elasticity increased significantly as cement content was raised. Modulus of rupture values were inversely related to cement content. Increasing wood to cement ratio led to low internal bonding because the low amount of cement can be insufficient to cover the wood particles for effective bonding to resist the tensile forces applied during internal bonding test. As the board density increased, dimensional stability increased. Variations in the wood to cement ratio have been reported to significantly affect the dimensional stability of specimens. Water absorption and thickness swelling increased with the increase in wood to cement ratio. Fire resistance of specimens improved when the board density and cement content increased. All of the mechanical properties of boards produced in this study satisfied the EN 634-2 requirements.

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APA: Copy

GHOFRANI, M., & FAZELI, A.. (2021). Effect of Board density and industrial wood particles to cement ratio on mechanical and physical properties of wood cement composite boards. IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH, 35(4 (73) ), 362-375. SID. https://sid.ir/paper/389147/en

Vancouver: Copy

GHOFRANI M., FAZELI A.. Effect of Board density and industrial wood particles to cement ratio on mechanical and physical properties of wood cement composite boards. IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH[Internet]. 2021;35(4 (73) ):362-375. Available from: https://sid.ir/paper/389147/en

IEEE: Copy

M. GHOFRANI, and A. FAZELI, “Effect of Board density and industrial wood particles to cement ratio on mechanical and physical properties of wood cement composite boards,” IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH, vol. 35, no. 4 (73) , pp. 362–375, 2021, [Online]. Available: https://sid.ir/paper/389147/en

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