In this study, it was carried out to provide basic data of board and woodceramics manufactured from ricehusk of agricultural by-product and sawdust of by-products formed during sawing process and charcoal of eco-friendly materials.

The addition ratio of sawdust, ricehusk and charcoal was fixed 50:20:20, then the thickness swelling of mixed board was 5.54%, 7.95%, 10.73, when density was 0.5g/㎤, 0.6g/㎤, 0.7g/㎤ respectively, and satisfied quality standards of KSF 3104. Moreover the internal bond strength was 0.10N/㎟, 0.23N/㎟, 0.49N/㎟, when density was 0.5g/㎤, 0.6g/㎤, 0.7g/㎤ respectively, and satisfied quality standards matched with the KSF 3104.
Meanwhile, the density fixed 0.6g/㎤, then thickness swelling and internal bond strength of mixed board, which prepared by addition ratio of sawdust, ricehusk and charcoal, was satisfied quality standards as same as KSF 3104.
Next, the addition ratio of sawdust, ricehusk and charcoal fixed 50:20:20, then bending strength of mixed board was prepared by different density, and once again density was fixed 0.6g/㎤, while addition ratio was variable, at that time bending strength of mixed board was not satisfied quality standards as same as KSF 3104.
The thickness swelling and internal bond strength of board, which manufactured by variable density and additon ratio of sawdust, ricehusk and charcoal, was satisfied quality standard of KSf 3104. But the quality was not satisfied standard as same as KSF 3104 for the bending strength at the same condition. Therefore, it could be used for building interior materials which did not require strength properties.

The far-infrared emissivity of woodceramics prepared by using sawdust, rice husk and charcoal was 0.925～0.933. In particular, the woodceramics manufactured by board, which made from 50:35:5 of addition ratio (sawdust:ricehusk:charcoal) and a density of 0.6g/㎤, was impregnated with a resin impregnation ratio of 40%, and carbonized at 800℃, showed the highest far-infrared emissivity of 0.933.
The sound absorption of woodceramics prepared by variable conditions, was 20～45% at all frequencies. The woodceramics manufactured by board made from 50:20:20 of addition ratio and a density of 0.5g/㎤, was impregnated with a resin impregnation ratio of 40%, and carbonized at 800℃, showed the highest sound absorption of 35～45% at all frequencies.
Moisture absorption and desorption of the manufactured woodcermics by each production condition was as follows. The woodceramics manufactured by board made from 50:20:20 of addition ratio and a density of 0.6g/㎤, was impregnated with a resin impregnation ratio of 40%, and carbonized at 600℃, showed the highest moisture absorption and desorption of 16.199kg/㎡ and 16.632kg/㎡ in the middle humidity. The woodceramics manufactured by board made from 50:35:5 of addition ratio and a density of 0.6g/㎤, was impregnated with a resin impregnation ratio of 40%, and carbonized at 800℃, showed the highest moisture absorption and desorption of 15.136kg/㎡ and 15.136kg/㎡ in the high humidity.
The deodorization of formaldehyde of woodceramics prepared by using sawdust, rice husk and charcoal was more than 85%. In particular, the woodceramics manufactured by board made from 50:20:20 of addition ratio and a density of 0.6g/㎤, was impregnated with a resin impregnation ratio of 40%, and carbonized at 800℃, showed the highest deodorization of formaldehyde of 89%.
In the present study, the woodceramics made from our proposed of sawdust, rice husk and charcoal, can be used in building interior materials, kitchen tools, public bath facilities with high far-infrared emissivity of 0.925～0.933. In addition, it can be applied to educational institutions, religious organizations, cultural facilities, sports facilities, musical instrument training rooms, etc., because of it is a sound absorption capacity of 20 to 45% at all frequencies. It can also be used for finishing materials, general walls, furniture because of woodceramics made from sawdust, rice husk and charcoal, which had the high deodorizing effect more than 85% and high moisture adsorption/desorption performance. Woodceramics made from sawdust, ricehusk and charcoal are considered to have sufficient potential for utilization as functional building interior materials.