Publication detail

Durability of Wood–Cement Composites with Modified Composition by Limestone and Stabilised Spruce Chips

MELICHAR, T. DUFKA, A. DVOŘÁK, K. BAYER, P. VASAS, S. NOVÁKOVÁ, I. SCHWARZOVÁ, I. BYDŽOVSKÝ, J.

Original Title

Durability of Wood–Cement Composites with Modified Composition by Limestone and Stabilised Spruce Chips

Type

journal article in Web of Science

Language

English

Original Abstract

Limestone (LS) and stabilised secondary spruce chips (SCs) utilisation in wood–cement composites is still an unexplored area. Therefore, the main objective of the research presented here is the assessment of the long-term behaviour of cement-bonded particleboards (CBPs) modified by LS and SCs. Cement (CE) was replaced by 10% of LS, and spruce chips by 7% of SCs. The test specimens were stored in a laboratory and exterior environment (Middle Europe) for up to 2 years. The density, strength, and modulus of elasticity were evaluated after 28 days, and then in 6-month periods. The hygrosco-picity was analysed separately. The mineralogical composition and microstructure were analysed due to possible LS participation during hydration. SC synergic behaviour in CBPs was also studied. After 2 years, the microstructure of the CBP was more compact, and denser. Strong carbonatation contributes to the improvement of CBP properties. The products of carbonatation were present in both the matrix and wood chips. The hydration of the matrix was almost finished. LS has a positive effect on the matrix microstructure development. LS acts both as an active component participating in the formation of the cement matrix structure and as an inert microfiller, synergic with hydration products. SCs have a positive effect on the hygroscopic behaviour of CBPs and slightly negative effect on the tensile strength.

Keywords

wood–cement composite; particleboard; limestone; by-product; cuttings; secondary spruce chips; stabilisation; long-term durability; mechanical properties; microstructure

Authors

MELICHAR, T.; DUFKA, A.; DVOŘÁK, K.; BAYER, P.; VASAS, S.; NOVÁKOVÁ, I.; SCHWARZOVÁ, I.; BYDŽOVSKÝ, J.

Released

23. 12. 2024

Publisher

MDPI

ISBN

1996-1944

Periodical

Materials

Year of study

17

Number

24

State

Swiss Confederation

Pages from

1

Pages to

31

Pages count

31

URL

https://www.mdpi.com/1996-1944/17/24/6300

BibTex

@article{BUT193772,
  author="Tomáš {Melichar} and Amos {Dufka} and Karel {Dvořák} and Patrik {Bayer} and Silvestr {Vasas} and Iveta {Nováková} and Ivana {Schwarzová} and Jiří {Bydžovský}",
  title="Durability of Wood–Cement Composites with Modified Composition by Limestone and Stabilised Spruce Chips",
  journal="Materials",
  year="2024",
  volume="17",
  number="24",
  pages="1--31",
  doi="10.3390/ma17246300",
  issn="1996-1944",
  url="https://www.mdpi.com/1996-1944/17/24/6300"
}