ST9302-CS 981016 (4)October 16, 1998
Grace Construction Products
W R Grace & Co. · Corm
4323 Crites Stree~
:~,'.D ~ox 2585.77252
· 'i,,.~,.s,on. TX 77003
Ed Bell Construction
Gentlemen:
This is to certify that DARATARD-17, a water-reducing set-retarding
admixture, supplied by the Construction Products Division, W.R. Grace &
Co.-Conn., is formulated to comply with Specifmations for Chemical
Admixtures for Concrete, ASTM Designation: C-494, as a Type B & D
admixture; and the Standard Specir".,cations of the Texas Highway
Department.
No chlorides or halogens are added to DARATARD-17 as functional
ingredients during manufacture.
Material supplied for the above referenced project is identical in all respects,
including concentration, to the one originally submitted to and approved by
the State of Texas, Dept. of Transportation.
The above is in addition to and not in substitution for our standard Conditions
of Sale printed on the reverse side hereof.
Tom C. Henson
District Manager
Subscribed and s,c~m to, before me,
this 16th day of October, 1998 A.D.
Lorene B. Raso, Notary Public
In and For the State of Texas
October 16, 1998
Graca Construction Products
-:323 '? 'es S'ree,
-:,:~:o' T'( 77C03
Ed Bell Construction
Gentlemen:
This is to certify that Daravair 1000, an air-entraining admixture, as
manufactured and supplied by the Construction Products Division, W.R.
Grace & Co.-Conn., is formulated to comply with Specification for Air-
Entraining Admixtures for Concrete, ASTM Designation: C260 (AASHTO
M154).
Daravair 1000 does not contain calcium chloride containing compounds
as a functional ingredient. Chloride ions may be present in trace amounts
contributed from the domestic water supply used during the
manufacturing process.
Material supplied for the above referenced project is identical in all respects,
including concentration, to the one originally submitted to and approved by
the State of Texas, DepL of Transportation.
The above is in addition to and not in substitution for our standard Conditions
of Sale printed on the reverse side hereof.
Sincerely,
District Manager
Subscribed and s,,,~rn to, before me,
this 16th day of October, 1998 A.D.
Lorene B. Raso, Notary Public
In and For the State of Texas