| 摘要 |
<p>Cementitious prodts. reinforced with fibres are mfd., in which the mixt. is formed into a short from a fluid suspension by applying a suspension of cement and chopped glass fibre rovings to a permeable surface and draining off the liquid by suction through the surface. Specifically a flocculant is added to the mixt. together with bon-crystalline inorganic monofilaments esp. of glass wool or mineral wool. The prodn. replace prior art asbestos cement prods. The flocculant additive improves the drainage, so that the water content of the setting cement is reduced, Giving increased strength to the finished prod. The fine monofilaments prevent fine particles of filler and cement from passing through the drainage holes, and provide in their own right increased reinforcement.</p> |
