Effect of wood chips properties on mineralogical composition and microstructure of silicate matrix based composites

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2018-07-16
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Mark
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IOP Publishing
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Abstract
The research presented in this article was focused on proving the effect of wood chips parameters on the hardening process of silicate matrix in cement-bonded particleboard. Namely content of humidity in the chips (in range 30 to 90%) was significant. This amount of humidity was chosen with respect to real conditions of cement-bonded particleboards production. Influence of humidity could be reflected in the content of sugar (cellulose etc.) in wooden chips. The sugars affect the hardening of matrix negatively. Thus, phase composition and microstructure of matrix of cement-bonded particle boards were analysed during 2 to 28 days. Investigation of physico-chemical parameters and microstructure was also supplemented by verification of the basic material characteristics of cement-bonded particleboards (strength and modulus of elasticity in bending, transverse tensile strength perpendicular to the plane of the board, etc.).
Výzkum prezentovaný v tomto článku je zaměření na prokázání vlivu vlastností dřevěných třísek na průběh tuhnutí a tvrdnutí silikátové matrice v cementotřískových deskách. Konkrétně byl podstatný vliv vlhkosti třísek (v rozmezí 30 až 90 %). Toto množství třísek bylo vybráno s ohledem na reálné podmínky výroby cementotřískových desek. Byly sledovány parametry ve stáří 2 až 28 dní. Jednalo se o pevnost a modul pružnosti v ohybu, pevnost v tahu kolmo na rovinu desky, fázové složení a mikrostruktura.
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IOP Conference Series: Materials Science and Engineering. 2018, vol. 385, issue 1, p. 1-6.
http://iopscience.iop.org/article/10.1088/1757-899X/385/1/012035
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en
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Creative Commons Attribution 3.0 Unported
http://creativecommons.org/licenses/by/3.0/
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