ABSTRACT
The influences of water pre-treatment temperature and cement/wood mixing ratios on static and moisture response properties of cement-bonded particleboards produced from mixed Nigerian hardwood species were assessed in this study. The process variables for board fabrication were pre-treatment temperature (5 levels) and wood/ cement mixing ratios (5 levels) resulting in 25 treatment combinations in a factorial experiment. The examined properties are modulus of rupture (MaR), modulus of elasticity (MaE), water absorption (WA), thickness swelling (TS) and linear expansion (LE) properties of the experimental cement-bonded particleboards. Data collected were analysed using a combination of ANaV A and multiple linear regression models. Mean MaR and MaE ranged from 4.02 to 12.74 N/mm2 and 2040 to 4060N/mm2 respectively, while (WA), (TS) and (LE) ranged from 27.13 to 43.97%, 0.51 to 3.50% and 0.14 to 0.72% respectively. Strength (MaR) and stifness (MaE) of the boards increased as water pre-treatment temperature were raised from 35°C to 80°C. As water pre-treatment temperature was raised from 80°C to 95°C, weaker and inferior boards were produced. Water pre-treatment temperature was weakly correlated with MOR, MaE, WA, TS and LE. an the other hand, cement/wood mixing ratio was well correlated with these board properties. The study thus demonstrated that there is optimum water pretreatment temperature range (65°C-80°C) within which high quality boards can be produced in the selected species; and beyond which board quality will be impaired.
O, B & O, O (2021). Physical and Mechanical Properties of Cement-Bonded Particleboards Produced at Different Water Pre-Treatment Temperatures and Cement/W ood Mixing Ratios. Afribary. Retrieved from https://afribary.com/works/physical-and-mechanical-properties-of-cement-bonded-particleboards-produced-at-different-water-pre-treatment-temperatures-and-cement-w-ood-mixing-ratios
O, BADEJO and OMOLE O "Physical and Mechanical Properties of Cement-Bonded Particleboards Produced at Different Water Pre-Treatment Temperatures and Cement/W ood Mixing Ratios" Afribary. Afribary, 19 Mar. 2021, https://afribary.com/works/physical-and-mechanical-properties-of-cement-bonded-particleboards-produced-at-different-water-pre-treatment-temperatures-and-cement-w-ood-mixing-ratios. Accessed 30 Apr. 2024.
O, BADEJO, OMOLE O . "Physical and Mechanical Properties of Cement-Bonded Particleboards Produced at Different Water Pre-Treatment Temperatures and Cement/W ood Mixing Ratios". Afribary, Afribary, 19 Mar. 2021. Web. 30 Apr. 2024. < https://afribary.com/works/physical-and-mechanical-properties-of-cement-bonded-particleboards-produced-at-different-water-pre-treatment-temperatures-and-cement-w-ood-mixing-ratios >.
O, BADEJO and O, OMOLE . "Physical and Mechanical Properties of Cement-Bonded Particleboards Produced at Different Water Pre-Treatment Temperatures and Cement/W ood Mixing Ratios" Afribary (2021). Accessed April 30, 2024. https://afribary.com/works/physical-and-mechanical-properties-of-cement-bonded-particleboards-produced-at-different-water-pre-treatment-temperatures-and-cement-w-ood-mixing-ratios