C465 ACCEPTANCE DATA
Roan Industries RI-77AA Cement Grinding Aid
Trade Name
RI-77AA
Source and Character
RI-77AA contains
50% Roan Industries' RII-77 grinding aid and 50% Roan Industries' RI-85 grinding aid. RII-77 contains glycols. RI-85 contains
50% Triethanolamine and other amines, 30% Water, and 20% Acetic Acid. These materials are obtained from a variety of suppliers.
Amount Recommended for Use
Between 0.01
and 0.06% RI-77AA should be added, depending on the cement plant conditions and intended use.
Highest Amount That Has Demonstrated Compliance
0.06%
Method for Determination of RI-77AA in finished
cement
Triethanolamine (TEA) is leached from the finished cement using hot water. The TEA is then purified using several
ethanol washes. The purified TEA is then reacted with hydrochloric acid vapors to form triethanolamine hydrochloride, a salt.
A KBr pellet is formed using the TEA hydrochloride and analyzed by FTIR.
Names and Locations of Testing Labs
Ambric
Testing Labs
4041 Ridge Avenue
Philadelphia, PA 19129
Roan Labs
7278 Park Drive
Bath, PA 18014
