New Machinery for the Manufacture of Concrete Pipes
DOI:
https://doi.org/10.3989/ic.1963.v16.i150.4720Abstract
The new impermeability requirements to be met by concrete pipes have led to important changes in the manufacturing methods and in the machinery employed for making such pipes. This new manufacturing equipment makes use, in the majority of cases, of a combined process of simultaneous vibration and compression of the material, in order to attain a better quality in the finished product. Furthermore, to improve the finish of the inner surface of the pipes, it now becomes necessary to grind the interior of the pipes by special machinery, except in those cases where the removal of the formwork is so arranged that it insures a sufficiently smooth and continuous inner surface.
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