| 摘要 |
<p>PURPOSE:To produce a composite material by forming a composition containing granulated blastfurnace slag, a water-soluble polymer, a hardening promoter and water, unifying the resultant formed material with a material prepared by hardening the composition to from into one body, aging and hardening it. CONSTITUTION:With 100 pts.wt. mixture of 2 to 50 pts.wt. ultrafine powder material having <=10mum average particle diameter, e.g. silica fume and granulated blastfurnace slag having >=2000cm<2>/g Blaine's specific surface area, 0.5 to 10 pts.wt. water-soluble polymer having >=10000 molecular weight, e.g. sodium poly(meth)-acrylate is admixed ad 0.1 to 5 pts.wt. one or more kinds of hardening promoters selected from alkaline metal hydroxides such as NaOH and carbonates and 10 to 60 pts.wt. water are then added thereto. The resultant mixture is kneaded and subsequently subjected to vacuum extrusion molding to form a material B. A composition containing the same components as the material B is kneaded, subjected to vacuum extrusion molding and subsequently hardened according to the atmospheric-pressure steam aging method to form a material A. The materials A and B are put in layers and allowed to pass through a pair of rolls. The resultant unified material is hardened according to the atmospheric-pressure steam curing method, thus producing the objective strongly unified composite material.</p> |
