Permeable concrete

• US 2,793,957 A
• Filed: 01/19/1952
• Issued: 05/28/1957
• Est. Priority Date: 01/19/1952
• Status: Expired due to Term

• Current Assignee: George B. Mangold, James Alan Dyer, John T. Hart
• Original Assignee: George B. Mangold, James Alan Dyer, John T. Hart
• Inventors: Mangold, George B., Dyer, James A., Hart, John T.
• Application Number:
  US03/267,218
• Time in Patent Office: 1,956 Days
• US Class Current: 106/675
• CPC Class Codes: C04B 14/14 Minerals of vulcanic origin granite C04B14/048
• CPC Class Codes: C04B 18/08 Flue dust , i.e. fly ash
• CPC Class Codes: C04B 20/0076 characterised by the grain distribution
• CPC Class Codes: C04B 28/02 containing hydraulic cements other than calcium sulfates
• CPC Class Codes: C04B 38/08 by adding porous substances
• CPC Class Codes: Y02W 30/91 Use of waste materials as fillers for mortars or concrete

Claims

1. A CONCRETE CHARACTERIZED BY A RELATIVELY HIGH PERMEABILITY TO LIQUIDS WHICH AS A SLURRY CONSISTS ESSENTIALLY OF APPROXIMATELY 1 PART OF PORTLAND CEMENT. 0.10 TO 0.40 PART OF POZZALAN. 4.0 TO 7.0 PARTS OF A FIRST LIGHTWEIGHT AGGREGATE HAVING A PARTICLE SIZE DISTRIBUTION OF FROM ABOUT 3 TO ABOUT 6 MESH. 1.0 TO 2.0 PARTS OF A SECOND LIGHTWEIGHT AGGREGATE HAVING A PARTICLE SIZE DISTRIBUTION OF FROM ABOUT 10 MESH TO ABOUT 100 MESH, THERE BEING SUBSTANTIALLY NO AGGREGATE PARTICLES IN THE SIZE RANGE OF FROM ABOUT 7 TO ABOUT 9 MESH, AND WATER.