Porosity of Cement-Bonded Particleboards Hardened by CO2 Injection and Cured by Hydration

Autor:	Tibor Alpár, Péter Takáts, Yasunori Hatano
Rok vydání:	2003
Předmět:	Initial strength Cement Pore size Pore diameter Materials science Absorption of water Ecology Distribution diagram Animal Science and Zoology Composite material Porosity Agronomy and Crop Science Curing (chemistry) Biotechnology
Zdroj:	Japan Agricultural Research Quarterly: JARQ. 37:263-268
ISSN:	2185-8896 0021-3551
DOI:	10.6090/jarq.37.263
Popis:	The purpose of the porosity measurements was to compare the boards made by two different methods: the conventional, hydration curing method and the CO 2 injection method, and to find out how their porosity affects water absorption. The specific pore-surface area of the CO 2 -hardened boards was much smaller than that of the hydrated cement-bonded particleboards. Regarding the pore size distribution diagram, in the case of the CO 2 -hardened boards, there were two peaks on the graph (one peak at a pore diameter of around 6-8 μm, and a second peak at around 2 μm), and in the case of the conventional boards there was only one peak at 2 μm. The total pore volume of the CO 2 -hardened boards was larger than that of the hydrated boards. Water absorption of the CO 2 -hardened boards was lower than that of the hydrated particleboards. There was no relationship between the specific pore-surface area and water absorption, and between the total pore volume and water absorption. The use of CO 2 did not affect water absorption and these boards still displayed a higher initial strength.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0cf92520d8dea686cf3164f215af0b18 https://doi.org/10.6090/jarq.37.263 Zobrazit plný text záznamu