| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an inorganic filler for a fireproof door facilitating filling work for a hollow part of a door frame, highly efficiently manufactured even in a case of factory manufacture, being lightweight and strong against an impact, and imparting the door frame with a sufficient fireproof performance. <P>SOLUTION: This inorganic filler is composed of 30-60 wt% Portland cements, 20-60 wt% perlite with grain size of 0.15-2.5 mm, 20-60 wt% ALC (autoclaved light weight concrete) powder with grain size of 0.07-0.7 mm and 0.5-1.5 wt% thickener and, in filling, it becomes a putty state by adding water thereto and kneading it. The factory manufacture becomes possible by filling and solidifying an inorganic reinforcing material in the hollow part of the door frame to provide the lightweight fireproof door frame 2 with superior fireproof performance which is disposed in the outer circumference of a fireproof door board 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
