05108679 is referenced by 104 patents and cites 13 patents.

A process for the production of concrete roofing products of reduced weight loading having a thickness in section of not greater than 15 mm. The process involves forming an asbestos-free cementitious composition comprising (i) lightweight aggregate, (ii) hydraulic cement, (iii) water and (iv) reinforcing fibers in an amount of not more than 4% by weight of the total weight of the composition but the fibers being present in an amount sufficient to provide a reinforcing effect and impact strength in the roofing product, the cementitious composition being capable of being shaped by a roller and slipper method, and thereafter shaping the cementitious composition by the method to provide a shaped extrudate, dividing the extrudate to form sections and curing the sections to provide roofing products, wherein the reinforcing fibers have lengths of 0.5 mm to 20 mm. The impact resistant roofing products are useful as roofing tiles, or a replacement for shingles, shakes and slates.

Title
Process for the production of concrete building products
Application Number
362810
Publication Number
5108679
Application Date
November 2, 1990
Publication Date
April 28, 1992
Inventor
Jeremy Wingfield
Wiltshire
GB
Eric Rirsch
West Sussex
GB
Agent
Beveridge DeGrandi & Weilacher
Assignee
Redland Roof Tile
GB
IPC
B29C 47/00
B28B 11/14
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