Characteristics of the Cement Board Using CO2 Injection Technology from Wood and Non-Wood Species.

摘要

The fundamental weakness of the technology in manufacturing cement board is that the curing process takes a long time, which is about 28 days. CO2 injection technology has been shown to accelerate the hardemng process. However, each of the wood species has a different response due to the presence of inhibitors, namely extractive component. This study aims to compare the characteristics of CO2 injection cement boards from three wood species. These three species came from hardwood, softwood, and non-wood groups, namely agathis (Agathis sp.), Gmelin (Gmelina arborea) and parring bamboo (Gigantochloa atter), respectively. The type of cement used was Portland Cement Composite (PCC). The three cement boards were made using the CO2 injection method. The characteristics of the cement board were tested according to JIS A 5417 - 1992. The results showed that agathis has good characteristics in terms of mechamcal properties. Both Internal bonding and modulus of elasticity were better than others, but not with its modulus of rapture. As for physical properties, parring bamboo actually showed good performance. However, in general, these three species of cement boards did not meet the standard.