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~ - ,..., .... ASTM C 618 Class F fly ash concrete. The tests shall be performed as specified in 929-2.2. Sampling and testing of fly ash shall follow the requirements of ASTM C 311. 929-2.4 Special Requirements: 929-2.4.1 Fly Ash (Class C): When a Class C fly ash is used in moderately or extremely aggressive environments, tests made by the CCRl approved independent laboratory shall verify improved sulfate resistance of the concrete in accordance with ASTM C 1012, and improved or comparable corrosion protective properties measured by FM 5-522, as compared to similar concrete made with Class F fly ash.. 929-2.4.2 Petroleum Coke and Bark Ash (Class F): For sources where the fly ash is not derived solely from ground or powdered coal combustion, certified test results performed by an independent approved laboratory, shall be submitted by the supplier. The performance-based comparison test results shall meet the requirements of 929-2.2 and 929-2.3 for petroleum coke and bark ash fly ashes, respectively. 929-2.5 Exceptions: Fly ash shall not be used in conjunction with Type IP or Type IS cements. 929-2.6 Acceptance Testing of Fly Ash: Acceptance of fly ash from sources operating under an approved quality control plan shall be based on the monthly certified quality control tests meeting the chemical (Supplementary Optional included) and physical requirements of ASTM C 618. When the loss on ignition exceeds 5%, the Uniformity Requirements in the Supplementary Optional Physical Requirements shall be mandatory. An approved laboratory shall perform the monthly quality control tests and a copy of their mill certificates shall be sent to the State Materials Office when the material is in use on Department projects. The certification shall indicate that the fly ash meets the requirements of this Specification. Also, the corresponding samples along with mill certificates shall be submitted to the Department, upon request. . II . ,..., . ..., . I' . . II . .., . " . .., 929-3 Silica Fume. 929-3.1 General: Silica Fume shall meet the requirements of ASTM C 1240 using the referenced test methods and frequencies. Repulpable bags may be accepted by the Engineer, provided a successful demonstration by the producer has indicated complete degradation of the repulpable bags during the mixing operation and before the concrete is discharged. 929-3.2 Acceptance Testing of Silica Fume: Acceptance of silica fume from sources operating under an approved quality control plan shall be based on the monthly certified quality control tests meeting the chemical (Supplementary Optional included) and physical requirements of ASTM C 1240. An approved laboratory shall perform the monthly quality control tests and a copy of their mill certificates shall be sent to the State Materials Office when the material is in use on Department projects. The certification shall indicate that the silica fume meets the requirements of this Specification. Also, the corresponding samples along with mill certificates shall be submitted to the Department, upon request. ., . ..., . . .., . ....., . ,.., 929-4 Metakaolin. 929-4.1 General: Metakaolin shall meet the requirements of ASTM C 618 Class N with the following modifications: 1. The sum of SiOz + Alz03 + Fez03 shall be at least 85%. The Material Safety Data Sheet shall indicate that the amount of crystalline silica, as measured by National Institute of Occupation Safety and Health (NIOSH) 7500 method, after removal of the mica interference, is less than 1 .0%. . , 1 . .., . -, 09/09 01000-177 03-4122.F .