The Compatibility of Cement Bonded Fibreboard Through Dimensional Stability Analysis: A Review

Natural fibre in cement matrix was used to reinforce, increase tensile strength, and protect against matrix cracking. The various properties of the matrix, which were introduced by the shrinkage and thermal stresses, can be attributed to the microcracks on the composites. The composites experienced significant negative changes due to the spread of microcracks. Changes in moisture have an impact on the dimensional stability of cement-bonded fibreboards. The increasing moisture content caused the expansion of cement-bonded fibreboard, whereas shrinkage was caused by the moisture being evaporated. Since natural fibres connect ineffectively with the cement matrix due to their hydrophilicity, fibre-cement composites are dimensionally unstable. Hot water treatments operate by clearing the fibre’s surface of volatile compounds, impurities, and waxy elements and facilitating water absorption. Numerous variables, including the mixing ratio, the targeted density, and the pre-treatment technique used on natural fibre, influence the dimensional stability of cement-bonded fibreboard. The compatibility of cement-bonded fibreboard increases with increasing cement/fibre mixing ratio, density of cement-bonded fibreboard, hot water treatment temperature and duration.