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1 b. discharge is completed within 60 minutes after the introduction of mixing water <br /> 2 to the cement and aggregates, provided the concrete mix temperature is 70 F <br /> 3 or below during placement, or <br /> 4 <br /> 5 c. discharge is completed within 60 minutes after the introduction of mixing water <br /> 6 to the cement and aggregates, provided the mix contains an approved set <br /> 7 retarder at the manufacturer's minimum dosage rate. <br /> 8 <br /> 9 5-05.3(6) Subgrade <br /> 10 This section, including title, is revised to read: <br /> 11 <br /> 12 5-05.3(6) Surface Preparation <br /> 13 The Subgrade surface shall be prepared and compacted a minimum of 3 feet beyond <br /> 14 each edge of the area which is to receive concrete pavement in order to accommodate <br /> 15 the slip-form equipment. <br /> 16 <br /> 17 Concrete shall not be placed during a heavy rainfall. Prior to placing concrete: <br /> 18 <br /> 19 1. The surface shall be moist; <br /> 20 <br /> 21 2. Excess water (e.g., standing, pooling or flowing) shall be removed from the <br /> 22 surface. <br /> 23 <br /> 24 3. The surface shall be clean and free of any deleterious materials. <br /> 25 <br /> 26 4. The surface temperature shall not exceed 120°F or be frozen. <br /> 27 <br /> 28 5-05.3(7)A Slip-Form Construction <br /> 29 The second sentence of the first paragraph is revised to read: <br /> 30 <br /> 31 The alignment and elevation of the paver shall be regulated from outside reference lines <br /> 32 established for this purpose, or by an electronic control system capable of controlling <br /> 33 the line and grade within required tolerances. <br /> 34 <br /> 35 6-02.AP6 <br /> 36 Section 6-02, Concrete Structures <br /> 37 August 1, 2016 I <br /> 38 6-02.3(2)A Contractor Mix Design <br /> 39 The following new sentence is inserted after the first sentence of the third paragraph: 1 <br /> 40 <br /> 41 The mix design submittal shall also include test results no older than one year showing <br /> 42 that the Aggregates do not contain Deleterious Substances in accordance with Section <br /> 43 9-03. <br /> 44 <br /> 45 6-02.3(2)A1 Contractor Mix Design for Concrete Class 4000D <br /> 46 The following new sentence is inserted after the second sentence of the last paragraph: <br /> 47 <br /> 48 Mix designs using shrinkage reducing admixture shall state the specific quantity <br /> 49 required. <br /> 50 <br /> 1 <br /> AMENDMENTS TO THE 2016 STANDARD SPECIFICATIONS BOOK <br /> Revised: 8/1/16 <br />