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. 28, 2000
Filed:
Nov. 13, 1998
Applicant:
Inventors:
Zongjin Li, Clear Water Bay, HK;
Chung Kong Chau, Hung Hom, HK;
Faming Li, Clear Water Bay, HK;
Baoguo Ma, Hkust, HK;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
106805 ; 106725 ; 106731 ; 106823 ; 1061311 ;
Abstract
An admixture for enhancing the durability of concrete to repeated freeze-thaw cycles is disclosed. The admixture comprises as an essential element a natural polymer material derived from millet. The admixture further comprises smaller quantities of naphthenic sulfate salt, triethanolamine and formaldehyde. In addition the admixture can improve concrete's impermeability and chloride ion binding capability.