Ed P Weill

US Patent:

47863285, Nov 22, 1988

Filed:

Apr 1, 1988

Appl. No.:

7/176656

Inventors:

Ed Weill - Baltimore MD
L. Joseph Bradik - Bel Air MD

Assignee:

American Stone-Mix, Inc. - Towson MD

International Classification:

C04B 902
C04B 2404
C04B 2406

US Classification:

106 85

Abstract:

A mixture capable of forming a hard, bonded cement composition when admixed with water comprising magnesium oxide; a water soluble phosphate; a retarder selected from the group consisting of polycarboxylic acids, polyphosphonic acids, and salts of such acids; and an essentially inert aggregate filler. The retarder is preferably selected from the group consisting of citric acid, sodium citrate (monobasic), sodium citrate (dibasic), tartaric acid, trimellitic acid, nitrilotriacetic acid trisodium salt monohydrate, Dequest 2000 and Dequest 2006. The phosphate is preferably monoammonium phosphate and the filler is preferably silica sand and fly ash which are essentially free of calcium oxide and calcium carbonate. The mixture is admixed with water at a job site and used to fill holes in roads and other structures and is capable of being worked for at least seven minutes before initial set.

US Patent:

47567627, Jul 12, 1988

Filed:

Jul 16, 1987

Appl. No.:

7/074527

Inventors:

Ed Weill - Baltimore MD
Joseph Bradik - Bel Air MD

Assignee:

American Stone-Mix, Inc. - Towson MD

International Classification:

C04B 904
C04B 2216

US Classification:

106121

Abstract:

A mixture capable of forming a hard, bonded cement composition when admixed with water comprising magnesium oxide; a water soluble phosphate; a retarder selected from the group consisting of polyphosphonic acids, and salts of such acids; and an essentially inert aggregate filler. The retarder is preferably selected from the group consisting of Dequest. TM. 2000 and Dequest. TM. 2006. The phosphate is preferably monoammonium phosphate and the filler is preferably silica sand and fly ash which are essentially free of calcium oxide and calcium carbonate. The mixture is admixed with water at a job site and used to fill holes in roads and other structures and is capable of being worked for at least seven minutes before initial set.

US Patent:

52443043, Sep 14, 1993

Filed:

Mar 13, 1991

Appl. No.:

7/668923

Inventors:

Ed Weill - Baltimore MD
Geoffrey A. Crenson - White Hall MD

Assignee:

American Stone-Mix, Inc. - Towson MD

International Classification:

E01C 1108

US Classification:

404 67

Abstract:

A paving composition comprises a cement binder, a dispersible latex polymer binder, and a mineral aggregate filler such as sand. The filler may be made up of mineral fines such as fly ash, mineral aggregate such as sand, and/or an elastomeric filler such as ground rubber particles. The composition may further include a defoamer, a plasticizer and a dispersible pigment, the latter preferably being a black pigment to color the composition to that of asphalt pavement. Preferably, the composition is in the form of a dry mixture capable of forming a hard patch bonded to an asphalt surface when admixed with water in which the cement binder comprises up to about 15 percent by weight of the mixture, the latex polymer binder comprises up to about 10 percent by weight of the mixture, the elastomeric filler comprises up to about 10 percent by weight of the mixture, the mineral filler comprises up to about 30 percent by weight of the mixture, and the mineral aggregate filler comprises from about 60-98 percent by weight of the mixture. The present invention is directed in particular to use in patching a depression in asphalt pavement by preparing a patching composition as described above, admixing the patching composition with water, filling the depression with the patching composition, and curing the patching composition to form a hardened patch in the pavement. When completed, the hardened, essentially bitumen-free patching composition has a surface conforming substantially to the surface of the surrounding asphalt pavement and is bonded thereto.