Process for the production of concrete tiles
AssigneeQuarella S.p.A.
InventorMario Collepardi
Life of this patent
Estimating the term…
Abstract
Process for the production of concrete tiles by cutting a block of concrete mixture, characterized in that the block of mixture is subjected to a preliminary curing at room temperature for a duration of at least 24 hours or to a low-pressure steam treatment at a temperature <100.degree. C. until the compression strength reaches a value of at least 20 MPa, and to a second treatment with steam in an autoclave. The cement tiles thus obtained may be bonded to the floor using a normal setting layer of cement mortar, without giving rise to any problems of detachment.
Claims6
A process for the production of concrete tiles having decreased swelling and drying shrinkage characteristics which consists essentially of:
- a) mixing Portland cement or Portland cement and quartz with aggregates and water to form a concrete mixture;
- b) forming said concrete mixture into a block;
- c) pretreating said block until a compression strength of the concrete thereof is at least 20 MPa;
- d) treating said block with steam in an autoclave;
- and
- e) cutting said treated block into concrete tiles.
A process for the production of concrete tiles having decreased swelling and drying characteristics which consists essentially of:
- a) mixing Portland cement or Portland cement and quartz with aggregates and water to form a concrete mixture;
- b) forming said concrete mixture into a block;
- c) pretreating said block until a compression strength of the concrete thereof is at least 20 MPa;
- d) cutting said pretreated block into concrete tiles;
- and
- e) treating said tiles with steam in an autoclave.
Dependencies are inferred from the claim text.