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, 2016
Filed:
Mar. 27, 2015
King Saud University, Riyadh, SA;
Galal Fares, Riyadh, SA;
Rajeh Z. Al-Zaid, Riyadh, SA;
Abdulrahman M. Alhozaimy, Riyadh, SA;
Abdulaziz I. Al-Negheimish, Riyadh, SA;
Mohammad I. Khan, Riyadh, SA;
King Saud University, Riyadh, SA;
Abstract
The present invention contemplates a cementitious additive that contains electric-arc furnace dust (EAFD) and a precursor as a replacement for up to about 30% of the cement in concrete. The additive includes about 50% by weight EAFD and about 50 wgt. % of precursor. The precursor includes about 55 wgt. % silica, about 10 to 20 wgt. % lime, about 2 to 5 wgt. % soda, about 5 to 15 wgt. % potash, about 2 to 6 wgt. % alumina and about 1 to 3 wgt. % magnesia. The method also contemplates the step of homogenizing the electric-arc furnace dust (EAFD) and precursor to produce engineered dust (ED) and then replacing up to 30% of the cement with a mixture referred to as ED i.e. homogenized EAFD and precursor.