Anchor Wall Systems Limited

Paul Johnson

Jay J Johnson

Jimmie L Mugge

Paul Randal Tufts

Ronald James Scherer

Mike Lidbom

Wally Hernandez

Michael S Lidbom

Lech W Hernandez

A mold for making dry cast concrete blocks includes a pair of vertical shoulder forming sections, one along each of the opposite sides of the mold to form vertical front shoulders of a block. Each shoulder forming section has a shoulder roughening arrangement to result in molded, roughened shoulders of the block. Methods of making such blocks and the resulting block are included.

Molds for producing concrete blocks with roughened surfaces; blocks made therefrom; and methods of use

Molded surface of a concrete product

A concrete block mold division plate for front-face-up block molding. The division plate fits into a channel formed in each of the side walls of the mold. A plurality of fasteners secure the division plate within each channel and to the side walls of the mold. The division plate operates in conjunction with an optimized dry cast concrete mixture to provide acceptable control of the flatness and parallelism of the top and bottom surfaces of the blocks.

Dimensional control of concrete blocks

The invention relates to a method of controlling the quality of blocks that are produced front face-up in a mold, and verifying the accuracy of the production of such blocks, to ensure that the blocks are manufactured with consistent quality and minimal block-to-block variability. Measurement locations are formed on the front faces of predetermined blocks. By measuring the distances between the measurement locations and the rear faces and comparing with a target distance, any variation provides an indication that the blocks are not being properly formed. The process variables, such as the alignment of the compression head and/or the pressure plates to the mold, can then be adjusted accordingly.

Methods of quality control in concrete block production

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Clearwater, MN, United States of America

Paul Johnson