Concrete blocks having through holes for water drainage

Details Concrete blocks having through holes for water drainage Concrete blocks having through holes for water drainage

E - Fixed Constructions

01

C

E01C 5/06 (2006.01) B28B 11/04 (2006.01) E01C 11/22 (2006.01)

Patent

CA 2110955

Concrete Blocks Having Through Holes for Water Drainage ABSTRACT In the case of concrete blocks having thin through holes for water drainage (perforated blocks), in particular paving stones of various formats and sizes that can be laid on surfaces exposed to the rain, such as streets, paths, squares, parking areas and rings around planted trees, and can be filled by means of jointing means or by means of sand at the lateral ends, the problem exists that the holes become plugged upon jointing or sanding-in. In order to prevent this, the holes are closed at their top end, and indeed until the jointing or sanding-in operation is complete. This is advantageously accomplished by means of a filling agent that can be floated away or dissolves by means of the addition of water (Figure 1).

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