Laserfiche WebLink
SPECIAL PROVISIONS - SP20I6 BOOK <br />Last Revision by CO Special Provisions: 2/08/17 <br />Created August 20, 2015 <br />Page 30 <br />SP 0202-101 <br />F.1.b Grade Designation <br />The Department will designate concrete grade in accordance with Table 2461-6 and Table 2461-7 <br />using a letter designating the following: <br />(1) Intended Use <br />(2) Maximum water/cement (w/c) ratio <br />(3) Maximum Cementitious Content <br />(4) Maximum Supplementary Cementitious Substitution (SCM) <br />(5) Slump range <br />(6) Minimum 28-day compressive strength, fc <br />(7) Coarse Aggregate Quality in accordance with 3137 <br />S-32.8 MnDOT 2461.2.F.1.d shall be deleted and replaced with the following: <br />F.1.d Coarse Aggregate Gradation Designation <br />Select the appropriate coarse aggregate gradation designation in accordance with Table 2461-3 <br />based on the intended use and the gradation requirements in 3137, "Coarse Aggregate for Portland Cement <br />Concrete." <br />Designation <br />0 <br />1 <br />2 <br />3 <br />4 <br />7 <br />8 <br />Table 2461-3 <br />Coarse Aggregate Designation for Concrete <br />Coarse Aggregate Gradation <br />Job Mix Formula (JMF) combination of fine and coarse aggregate <br />Table 3137-4, "Coarse Aggregate Designation for Concrete" <br />ASTM #467 <br />ASTM #67 <br />ASTM #7 <br />ASTM #89 <br />CA-70 <br />CA-80 <br />S-32.9 MnDOT 2461.2.F.1.e shall be deleted and replaced with the following: <br />F.1.e Additional Concrete Mix Designation Digits <br />Specialty concrete mixes require additional concrete digits in accordance with Table 2461-6. Use <br />"EX" for exposed aggregate mixes and "CO" for colored concrete mixes. The Contractor may add <br />additional digits to the right of the required digits in the concrete mix number. <br />S-32.10 <br />following: <br />MnDOT 2461.2.F.2, 2461.2.F.2.a, and 2461.2.F.2.b shall be deleted and replaced with the <br />F.2 Concrete Mix Design Requirements <br />The Engineer determines final acceptance of the concrete for payment based on test results, <br />satisfactory field placement and performance. <br />F.2.a Department Designed Concrete Mixes <br />The Department will provide mix designs for the concrete defined in Table 2461-4 and Table <br />2461-5. <br />F.2.a(1) Department Designed Concrete Requirements <br />