| 摘要 |
<p>PURPOSE:To produce a wood chip cement plate excellent in strength by mixing specified wood chip, hydraulic ultrafine particles curing material and a CaCl2 aq. soln. and subjecting the mixture to compression molding and thereafter drying it. CONSTITUTION:(A) Wood chip 1 wt.pt. having 10mm maximum particle diameter, 0.05mm minimum particle diameter and 1.2mm means particle diameter, (B) 1.2-2 weight times therefor of hydraulic ultrafine particles curing material (e.g., portland cement) having 10mu maximum particle diameter, 1mu minimum particle diameter and 4mu mean particle diameter, (C) 10-50wt.% shell having 20mm maximum particle diameter, 5mm minimum particle diameter and 15mm mean particle diameter in accordance with necessity, (D) 35-40wt.% of 3% CaCl2 aq. soln. for A and B components, (E) 35-40wt.% curing accelerator for A, B and C components are kneaded with water and the mixture is subjected to compression molding by exerting the load of 5.5-10kgf/cm<2> and thereafter dried.</p> |
