Durability of Wood–Cement Composites with Limestone and Spruce Chips
Author Information
Author(s): Melichar Tomáš, Dufka Amos, Dvořák Karel, Bayer Patrik, Vasas Silvestr, Novakova Iveta, Schwarzova Ivana, Bydžovský Jiří
Primary Institution: Brno University of Technology
Hypothesis
The study aims to assess the long-term behavior of cement-bonded particleboards modified by limestone and stabilized spruce chips.
Conclusion
After two years, the microstructure of the wood–cement composites became more compact and dense, with significant improvements in properties due to carbonatation.
Supporting Evidence
- Adding 10% limestone improved the microstructure and mechanical properties of the composites.
- After two years, bending strength increased by 4.6% and modulus of elasticity by 4.3%.
- Secondary spruce chips improved hygroscopic behavior but slightly reduced tensile strength.
Takeaway
The study shows that adding limestone and spruce chips to wood-cement boards makes them stronger and better at handling moisture over time.
Methodology
The study involved creating three formulations of cement-bonded particleboards and testing their properties over two years in different environments.
Limitations
The study did not explore the long-term effects beyond two years or the industrial production scale of the modified boards.
Digital Object Identifier (DOI)
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