Dimensional instability of cement-bonded particleboard

Fan, Mizi; Bonfield, P. W.; Dinwoodie, J. M.; Breese, M. C.

doi:10.1016/s0008-8846(99)00076-9

Cited by 22 publications

(14 citation statements)

References 1 publication

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“…As qualitatively discussed in previous papers (Fan, et al 1998c;1999), the trend of changes in dissected chips and laboratory cement paste, whether in mass or in dimensions, was similar to those of CBPB (Fan, et al 1998a). A similar procedure was followed to that used in the prediction for CBPB to develop universal formulae.…”

Section: Mass and Dimensional Change Of Dissected Chips And Of Laboramentioning

confidence: 65%

“…Now that the work on the behaviour of CBPB and its components over the various conditions has indicated the additive behaviour between CBPB and its components (Fan, et al 1998a;1998b;1998c;1999), the next task is to characterise quantitatively the material behaviour of CBPB based on these two constituents, possibly using the law of mixtures.…”

Section: Introductionmentioning

confidence: 99%

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Dimensional instability of cement bonded particleboard: Modelling CBPB as a composite of two materials

Fan

Dinwoodie

Bonfield

et al. 2004

Wood Science and Technology

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Summary. Previous papers have quantitatively indicated that the total movement of cement bonded particleboard (CBPB) is equal to the sum of the movement of its components. This paper examined the efficacy of the law of mixtures when applied to the movement of a wood-cement composite under internal swelling or shrinkage stresses. Abundant data generated in companion papers were first manipulated to develop the universal formulae for predicting the movement of components. In conjunction with previous numerical results from image analysis of the structure of CBPB, and the orientated elasticity and stress algorithms, the models for theoretically predicting mass and dimensional changes of CBPB were derived. Validation studies were conducted and these demonstrated an excellent agreement of the theoretical predictions with experimental data for both mass and dimensional changes of CBPB due to internal swelling or shrinkage stresses during adsorption and desorption. The success also implied that CBPB can be treated as a composite and its properties can be well derived by the law of mixtures even though CBPB is an unusual type of composite having a very high volume fraction of wood chips, but a very high mass fraction of cement paste.

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Section: Mass and Dimensional Change Of Dissected Chips And Of Laboramentioning

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Dimensional instability of cement bonded particleboard: Modelling CBPB as a composite of two materials

Fan

Dinwoodie

Bonfield

et al. 2004

Wood Science and Technology

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“…This can be explained by the findings of Fan et al [18], which attribute dimensional changes in CBPB to combined effects of moisture reaction, carbonation of the cement paste, and Table 4 and show that the full scale production is much stronger than the small scale one. The measured strength in the full scale specimen is well above the 12 MPa customary in CBPB on the market.…”

Section: B Marteinsson E Gudmundsson Open Journal Of Composite Matmentioning

confidence: 85%

Cement Bonded Particle Boards with Different Types of Natural Fibres—Using Carbon Dioxide Injection for Increased Initial Bonding

Marteinsson¹,

Gudmundsson²

2018

OJCM

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The effect of CO 2 injection on initial strength increase and hardening of cement-fibre mix in a cement bonded particle board (CBPB) production was evaluated. Different cement contents, formation pressure and types of fibres were considered. The initial strength increase with CO 2 injection is so much faster than this caused by conventional hydration that the produced samples do not need additional curing before they can be stored. Similar strength and stiffness values as in conventional products on the market are gained with lower cement content for similar types of fibres. Visual inspection of board surfaces aged for 13 years in a harsh exterior environment as well as comparison of strength and stiffness values for these boards when new and after ageing, gives a very satisfying result. The combined effect of the above discussed gains results in markedly increased productivity at lower cost and lower environmental impacts than is possible in traditional CBPB production.

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“…Lee et al (2002) and Liu et al (2011) obtained images via digital cameras (Lee et al 2002;Liu et al 2011). Redon et al (1999) used X-ray photography and Fan et al (2000) used a SEM to capture fiber distribution images (Redon et al 1999;Fan et al 2000). On the other hand, the fiber distribution state can also be evaluated by the DC conductivity or AC impedance.…”

Section: Introductionmentioning

confidence: 99%

Image Analysis and DC Conductivity Measurement for the Evaluation of Carbon Nanotube Distribution in Cement Matrix

Nam

Lee

2015

International Journal of Concrete Structures and Materials

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The present work proposes a new image analysis method for the evaluation of the multi-walled carbon nanotube (MWNT) distribution in a cement matrix. In this method, white cement was used instead of ordinary Portland cement with MWNT in an effort to differentiate MWNT from the cement matrix. In addition, MWNT-embedded cement composites were fabricated under different flows of fresh composite mixtures, incorporating a constant MWNT content (0.6 wt%) to verify correlation between the MWNT distribution and flow. The image analysis demonstrated that the MWNT distribution was significantly enhanced in the composites fabricated under a low flow condition, and DC conductivity results revealed the dramatic increase in the conductivity of the composites fabricated under the same condition, which supported the image analysis results. The composites were also prepared under the low flow condition (114 mm \ flow \ 126 mm), incorporating various MWNT contents. The image analysis of the composites revealed an increase in the planar occupation ratio of MWNT, and DC conductivity results exhibited dramatic increase in the conductivity (percolation phenomena) as the MWNT content increased. The image analysis and DC conductivity results indicated that fabrication of the composites under the low flow condition was an effective way to enhance the MWNT distribution.

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Dimensional instability of cement-bonded particleboard

Cited by 22 publications

References 1 publication

Dimensional instability of cement bonded particleboard: Modelling CBPB as a composite of two materials

Dimensional instability of cement bonded particleboard: Modelling CBPB as a composite of two materials

Cement Bonded Particle Boards with Different Types of Natural Fibres—Using Carbon Dioxide Injection for Increased Initial Bonding

Image Analysis and DC Conductivity Measurement for the Evaluation of Carbon Nanotube Distribution in Cement Matrix

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