Harry Allen Harris
Engineers at 86 Ter, Shawnee Mission, KS

License number
Colorado 10045
Issued Date
Sep 19, 1970
Renew Date
May 31, 2002
Expiration Date
May 31, 2002
Type
Professional Engineer
Address
Address
2411 W Terrace Trl, Shawnee Mission, KS 66206
LicenseFiles verified this license of Dec 9, 2016 at the Colorado - Department of Regulatory Agencies.

Professional information

Harry Harris Photo 1

Cementitious Composition

US Patent:
4494990, Jan 22, 1985
Filed:
Jul 5, 1983
Appl. No.:
6/510636
Inventors:
Harry A. Harris - Leawood KS
Assignee:
Ash Grove Cement Company - Overland Park KS
International Classification:
C04B 735
US Classification:
106 90
Abstract:
An improved cementitious composition is the subject of the present invention. The composition comprises 25-60 weight percent cement component. The cement component is 3 to 50 weight per pozzolan. The pozzolan should have a sulfate reactivity factor of no greater than 12 utilizing a function obtained from the Dunstan formula. The composition is 40 to 75 percent by weight alpha gypsum (calcium sulfate hemihydrate). Various additives may be included to enhance the performance of the composition. These include polymer modifiers, a water reducing agent, a set retarding agent and a set accelerating agent.

Engineers licenses in Colorado