| 摘要 |
<p>Lightweight insulating boards comprising a hydraulically set Portland cement, fibers and fillers consist of
<UnorderedLists id="ula01" listStyle="none"><ListItem>a) 50 - 75% by weight of cement,</ListItem><ListItem>b) 0 - 5% by weight of cellulose fibers,</ListItem><ListItem>c) 0.5 - 4% by weight of alkali-resistant fiber material,</ListItem><ListItem>d) 5 - 20% by weight of mica,</ListItem><ListItem>e) 5 - 20% by weight of light filler and</ListItem><ListItem>f) 8 - 25% by weight of hydrated lime.</ListItem></UnorderedLists>They are shaped into boards from a suspension in a <Underline style="single">per</Underline><Underline style="single">se</Underline> known manner, have set after at least 15 days, and at preferably 28 days, and then meet all of the requirements as set for such materials. </p> |
