Fracture-free layered paving blocks
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United States of America Patent
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Sep 24, 1991
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N/A
app pub date -
Jan 3, 1991
filing date -
Jul 14, 1987
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Expired
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Abstract
The fracture-free paving block comprises a cement block substrate and a top solid layer, and is characterized in that the top layer is selected from a cured cement mortar layer and tile-like layer firmly bonded to the substrate with cement mortar; the top layer is bonded to the block substrate with lateral margins of 1 to 8 mm wide in horizontal distance from the peripheral edges of the substrate; and the vertical distance from the surface of the top layer to the peripheral edge of the substrate is 5 to 50 mm.
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