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SPECIAL PROVISIONS - SP20I6 BOOK <br />Last Revision by CO Special Provisions: 2/08/17 <br />Created August 20, 2015 <br />Page 48 <br />SP 0202-101 <br />Table 2461-27 <br />All Concrete (Target Air Content 6.5%) <br />Air Content, % Monetary Reduction <br />The Engineer, in conjunction with the Concrete Engineer will determine the concrete <br />suitability for the intended use in accordance with 1503, "Conformity with Contract <br />>3.5 — <4.0 Documents," and 1512, "Unacceptable and Unauthorized Work." This may include <br />testing on the hardened concrete as required by the Engineer, in conjunction with the <br />Concrete Engineer <br />Remove and replace concrete in accordance with 1503, "Conformity with Contract <br />Documents," and 1512, "Unacceptable and Unauthorized Work," as directed by the <br />Engineer. This may include testing on the hardened concrete as required by the Engineer, <br />< 3.5 in conjunction with the Concrete Engineer. If the Engineer, in conjunction with the <br />Concrete Engineer, determines the concrete can remain in place, the Engineer may not <br />pay for the concrete and may require coating with an approved epoxy penetrant sealer <br />from the Approved/Qualified Products List. <br />S-32.40 MnDOT 2461.3.G.9 shall be deleted and replaced with the following: <br />G.9 Allowable Testing Tolerances <br />Allowable tolerances are based on the results from two different testers and two different pieces of <br />equipment from the same sample Perform the test within the allowable tolerances in accordance with <br />Table 2461-28. <br />Table 2461-28 <br />Allowable Testing Tolerances <br />Test <br />Air content, % volume of concrete <br />Average slump: <br /><4in <br />4in-6in <br />>6in <br />Unit weight, per cu. ft, calculated to an air -free basis <br />Compressive strength 3,000 psi — 8,000 psi, average of 3 <br />tests <br />S-33 (2462) PRECAST CONCRETE <br />REVISED 02/07/17 <br />MnDOT 2462 is hereby modified as follows: <br />S-33.1 MnDOT 2462.2.A shall be modified to include the following: <br />Allowable Tolerance <br />1.0 % <br />1.0 in <br />1.5 in <br />2.0 in <br />1.0 lb/cu. ft <br />500 psi <br />A.5 Ternary Mixes <br />Ternary mixes are defined as portland cement or Type 1L and two other supplementary <br />cementitious materials, or blended cement and one other supplementary cementitious material with a <br />maximum replacement of 40% by weight. <br />S-33.2 MnDOT 2462.2.E deleted and replaced with the following: <br />E Concrete Admixtures 3113 <br />Provide admixtures from the Approved/Qualified Products list for all concrete grades shown in <br />Table 2462-6. <br />