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1❑ BASS <br /> We create chemistry <br /> April 28,2017 <br /> Transit Mix Concrete CO <br /> 444 East Costilla <br /> Colorado Springs,CO 80903 <br /> Attention: Robert L. Montoya <br /> Project: Various <br /> Project location: Various <br /> Certificate of Conformance <br /> MasterAirO AE 90 Admixture(formerly MB-AE 90) <br /> BASF Corporation Air-Entraining Admixture for Concrete" <br /> I, Richard Hubbard, Sr.Technical Marketing Specialist for BASF Corporation, Cleveland, Ohio, <br /> certify: <br /> That MasterAir AE 90 admixture is a BASF Corporation Air-Entraining Admixture for concrete; <br /> and <br /> That MasterAir AE 90 and MB AE 90 admixture are the same product having identical <br /> composition, differing only in designation; and <br /> That no calcium chloride or chloride based ingredient is used in the manufacture of MasterAir AE <br /> 90 admixture; and <br /> That MasterAir AE 90 admixture,based on the chlorides originating from all the ingredients used <br /> in its manufacture,contributes less than 0.000068 percent(0.68 ppm)chloride ions by weight of <br /> the cement when used at the rate of 65 mL per 100 kg (1 fluid ounce per 100 pounds)of <br /> cement, and <br /> That MasterAir AE 90 admixture meets the requirements of ASTM C260, the Standard <br /> Specification for Air-Entraining Admixtures for Concrete as well as the requirements for a' <br /> entraining admixtu es as specified in Corps of Eng,neers CRD C 13 and AASHTO M154. <br /> j <br /> Richard :lunb,. <br /> Sr.Tec'r ,,'c.• t.'. <br /> MASTER <br /> >> UILD R <br />