Standard Concrete Materials, Inc.

Standard Concrete Products, Inc.

Associated Concrete Products, Inc.

Boral Concrete Products, Inc.

Harvey R Dunton

Donald H Rez

Francis C Petersen

Lightweight concrete roof tiles are produced by extruding a latex/cement/lightweight aggregates/water mix in a prescribed sequence. The composition comprises:

Lightweight concrete roof tiles

A method of mixing particulate cement and water in a primary mixing vessel to form a slurry batch, includes introducing a measured quantity of water into the vessel, introducing a measured quantity of particulate cement into the vessel, agitating the water and cement in the vessel to form a slurry, and while continuing such agitating, pumping slurry from the lower interior extend of the vessel and delivering the pumped slurry to the upper interior of the vessel, at high velocity, removing slurry from the vessel for flow to an auxiliary mixing vessel for mixing with aggregate, and employing wash water to wash remanent slurry from surfaces in the primary mixing vessel for flow to the auxiliary vessel.

Particle wetting process and apparatus

A method for forming foam, useful in mixing with concrete at a batching plant, includes the steps:

Apparatus and method to produce foam, and foamed concrete

A novel cement and concrete mixture is disclosed, which incorporates the spent catalysts from hydrocracking gasoline in partial substitution for the cementing agent.

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Anaheim, CA, United States of America

Harvey R Dunton