Agenda - Council - 06/27/2017 - Laserfiche WebLink

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SPECIAL PROVISIONS - SP20I6 BOOK Last Revision by CO Special Provisions: 2/08/17 Created August 20, 2015 Page 37 SP 0202-101 Any procedural changes that cause non-compliance with this program may result in de- certification of the plant and cessation of further production of Department concrete as determined by the Concrete Engineer in accordance with 2461.3.F.4.h, "Certified Ready -Mix Plant Decertification." S-32.21 MnDOT 2461.3.F.2 shall be modified to include the following: (21) For colored concrete, final color S-32.22 The definition for "Mix design water" and "Batch water" in Table 2461-13 of MnDOT 2461.3.F.3 shall be deleted and replaced with the following: Term Mix design water Batch water Table 2461-13 Certified Ready -Mix Terminology Definition The maximum allowable water content for 1 cu. yd of concrete. Water actually batched into the truck by the batcher. Batch water includes potable water and clarified water. S-32.23 MnDOT 2461.3.F.4(7) shall be deleted and replaced with the following: (7) (8) Take cementitious and admixtures samples per Schedule of Materials Control. Document the following samples in the appropriate Sampling Log: (8.1) Cementitious Materials (8.2) Admixtures (8.3) Verification Gradations (8.4) Coarse Aggregate Quality S-32.24 MnDOT 2461.3.F.4.b. 2461.3.F.4.c, 2461.3.F.4.d, and 2461.3.F.4.e shall be deleted and replaced with the following: F.4.b Sampling and Testing Take all samples randomly in accordance with ASTM D 3665, Section 5, at a rate defined in accordance with the Schedule of Materials Control. Perform all sampling and testing in accordance with the Concrete Manual The Engineer may oversee the QC sampling and testing process. Perform QC gradation and moisture testing at the certified ready -mix plant site. Use mechanical shakers for sieve analysis. Determine the moisture content using the oven -dry method in all fractions of the aggregate. Provide equipment and perform calibrations meeting the requirements of the following: (1) AASHTO T 27, "Sieve Analysis of Fine and Coarse Aggregates," (2) AASHTO T 255, "Total Moisture Content of Aggregate by Drying," (3) AASHTO M 92, "Wire -cloth Sieves for Testing Purpose," and (4) AASHTO M 231, "Weighing Devices Used in the Testing of Materials." F.4.c QC Gradations Complete the Concrete Aggregate Worksheet for each aggregate size and source: (1.1) QC gradations; (1.2) Verification Companion Gradations; The Engineer will not allow a Verification Companion Gradation as a substitute for a QC Gradation.