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SPECIAL PROVISIONS - SP20I6 BOOK <br />Last Revision by CO Special Provisions: 2/08/17 <br />Use of any of the following admixtures are at the Precaster's discretion: <br />(1.1) Type A, Water Reducing Admixture <br />(1.2) Type B, Retarding Admixture <br />(1.3) Type D, Water Reducing and Retarding Admixture <br />(1.4) Type F, High Range Water Reducing Admixture <br />(1.5) Type G, High Range Water Reducing and Retarding Admixture <br />(1.6) Type S, Specific Performance Based Admixture <br />Created August 20, 2015 <br />Page 49 <br />SP 0202-101 <br />Use of the following accelerating admixtures require approval of the Concrete Engineer, in <br />conjunction with the Engineer, unless otherwise allowed in the Contract: <br />(2.1) Type C, Accelerating Admixture <br />(2.2) Type E, Water Reducing and Accelerating Admixture <br />The Materials Engineer may permit the use of Type C or Type E accelerating admixtures when all <br />of the following conditions exist: <br />(3.1) The ambient temperature is below 36 °F, <br />(3.2) An Engineer approved cold weather protection plan is in -place, and <br />(3.3) Cold weather protection materials are on -site and ready for use. <br />S-33.3 MnDOT 2462.2.F.1 shall be deleted and replaced with the following: <br />F.1 Classification of Concrete <br />The Department will classify concrete by mix number to identify type, grade, consistency and <br />aggregate size, if any, in accordance with Table 2462-1. <br />First Digit <br />Type <br />Designation <br />Second <br />Digit <br />Table 2462-1 <br />Mix Number Identification <br />Third Digit Fourth Digit <br />Grade Maximum <br />Designation Slump <br />Coarse <br />Aggregate <br />Gradation <br />Designation <br />Additional Digits <br />Additional Digits <br />Allowed or as <br />Specified <br />S-33.4 MnDOT 2461.2.F.1.d shall be deleted and replaced with the following: <br />F.1.d Coarse Aggregate Designation <br />Select the appropriate coarse aggregate gradation designation in accordance with Table 2462-3 <br />based on the intended use and the gradation requirements in 3137, "Coarse Aggregate for Portland Cement <br />Concrete." <br />