The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 2011
Filed:
Sep. 17, 2008
Daniel Woolfsmith, Bridgeville, PA (US);
Michael T. Williams, Beaver Falls, PA (US);
Rick Hughes, Beaver, PA (US);
Michael R. Kelley, Butler, PA (US);
John K. Madish, Beaver Falls, PA (US);
Kristen Van Buskirk, Aliquippa, PA (US);
Tricia Guevara Ladely, Beaver, PA (US);
Daniel Woolfsmith, Bridgeville, PA (US);
Michael T. Williams, Beaver Falls, PA (US);
Rick Hughes, Beaver, PA (US);
Michael R. Kelley, Butler, PA (US);
John K. Madish, Beaver Falls, PA (US);
Kristen Van Buskirk, Aliquippa, PA (US);
Tricia Guevara Ladely, Beaver, PA (US);
NOVA Chemicals Inc., Moon Township, PA (US);
Abstract
A method of placing a concrete compositions including a) combining 3-40 volume percent cement, 5-50 volume percent fine aggregate, 5-50 volume percent coarse aggregate, and 10-22 volume percent water; b) adding 1.5-40 volume percent of prepuff particles to form a concrete composition; and c) pumping the concrete composition to a point higher in elevation than the delivery point of the concrete to place the concrete. The concrete composition contains less than 30 volume percent of other light weighting aggregates and the prepuff particles have an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.02 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3. The slump value of the placed concrete measured according to ASTM C 143 is greater than 1 inch and the concrete has a density of from about 40 to about 135 lb./ft.