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I <br /> 1 As the finishing operation progresses, the concrete shall be immediately covered with a <br /> 2 single layer of clean, new or used, wet burlap. <br /> 3 <br /> 4 The last sentence of the second paragraph is deleted. <br /> 5 <br /> 6 The following two new paragraphs are inserted after the second paragraph: <br /> 7 <br /> 8 As an alternative to the application of burlap and fog spraying described above, the <br /> 9 Contractor may propose a curing system using proprietary curing blankets specifically <br /> 10 manufactured for bridge deck curing. The Contractor shall submit a Type 2 Working <br /> 11 Drawing consisting of details of the proprietary curing blanket system, including product <br /> 12 literature and details of how the system is to be installed and maintained. <br /> 13 <br /> 14 The wet curing regimen as described shall remain in place for a minimum of 42-hours. <br /> 15 <br /> 16 The last paragraph is deleted. <br /> 17 <br /> 18 6-09.3(14) Checking for Bond <br /> 19 The first sentence of the first paragraph is revised to read: <br /> 20 <br /> 21 After the requirements for curing have been met, the entire overlaid surface shall be <br /> 22 sounded by the Contractor, in a manner accepted by and in the presence of the Engineer, <br /> 23 to ensure total bond of the concrete to the bridge deck. <br /> 24 <br /> 25 The last sentence of the first paragraph is deleted. <br /> 26 <br /> 27 The second paragraph is deleted. <br /> 28 <br /> 29 6-10.AP6 I <br /> 30 Section 6-10, Concrete Barrier <br /> 31 August 6, 2018 <br /> 32 6-10.2 Materials <br /> 33 In the first paragraph, the reference to "Portland Cement" is revised to read: <br /> 34 <br /> 35 Cement 9-01 <br /> 36 <br /> 37 6-10.3(6) Placing Concrete Barrier <br /> 38 The first two sentences of the first paragraph are revised to read: <br /> 39 <br /> 40 Precast concrete barriers Type 2, Type 4, Type F, precast single slope barrier, and <br /> 41 transitions shall rest on a paved foundation shaped to a uniform grade and section. The <br /> 42 foundation surface for precast concrete barriers Type 2, Type 4, Type F, precast single <br /> 43 slope barrier, and transitions shall meet this test for uniformity: When a 10-foot <br /> 44 straightedge is placed on the surface parallel to the centerline for the barrier, the surface <br /> 45 shall not vary more than 1/4 inch from the lower edge of the straightedge. <br /> 46 <br /> I <br />