发明名称 |
LIGHTWEIGHT CONCRETE ROOF TILES |
摘要 |
Lightweight concrete roof tiles are produced by extruding a cement/lightweight aggregate/water mix containing a non-thixotropic silica fume in a weight ratio of silica fume (calculated as dry weight) to cement of about 2:98 to about 25:75, preferably about 8:92 to about 12:88. The presence of non-thixotropic silica fume in the mix enables lightweight roof tiles of adequate flexural strength to be obtained from the mix by extrusion. Novel cement/lightweight aggregate/water mixes containing non-thixotropic silica fume and novel roof tiles prepared therefrom are also described. |
申请公布号 |
ZA8506426(B) |
申请公布日期 |
1986.04.30 |
申请号 |
ZA19850006426 |
申请日期 |
1985.08.23 |
申请人 |
MARLEY TILE A.G. |
发明人 |
JOHN WILLIAM MICHAEL WOOD;RICHARD CHARLES HACK |
分类号 |
C04B38/08;C04B28/02;C04B38/00;E04D1/04 |
主分类号 |
C04B38/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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