Ariston Pacific, Inc. 5/9/2016 - Laserfiche WebLink

1 2 1. To prevent the formation of a cold joint in between placement of successive 3 batches of SCC. 4 5 2. Near the end of an SCC placement to aid in leveling the SCC in the forms. 6 7 When vibration of SCC is allowed, the magnitude and duration of the applied vibration 8 shall be kept as minimal as possible. 9 10 6-02.3(10)A Preconstruction Meeting 11 This section including title is revised to read: 12 13 6-02.3(10)A Pre-Deck Pour Meeting 14 A pre-deck pour meeting shall be held 5 to 10 working days before placing deck 15 concrete-to discuss construction procedures, personnel,equipment to be used, 16 concrete sampling and testing and deck finishing and curing operations. Those 17 attending shall include, at a minimum, the superintendent, foremen in charge of placing 18 and finishing concrete, and representatives from the concrete supplier and the concrete 19 pump truck supplier. 20 21 If the project includes more than one bridge deck, and if the Contractor's key personnel 22 change between concreting operations, or at request of the Engineer, additional 23 conferences shall be held before each deck placement. 24 25 6-02.3(10)D Concrete Placement, Finishing, and Texturing 26 This section's content is deleted and replaced with the following new sub-sections: 27 28 6-02.3(10)D1 Test Slab Using Bridge Deck Concrete 29 After the Contractor receives the Engineer's approval for the Class 4000D concrete mix 30 design, and a minimum of seven calendar days prior to the first placement of bridge 31 deck concrete, the Contractor shall construct a test slab using concrete of the approved 32 mix design. 33 34 The test slab may be constructed on grade, shall have a minimum thickness of eight- 35 inches, shall have minimum plan dimensions of 10-feet along all four edges, and shall 36 be square or rectangular. 37 38 During construction of the test slab, the Contractor shall demonstrate concrete sampling 39 and testing, use of the concrete temperature monitoring system, the concrete fogging 40 system, concrete placement system, and the concrete finishing operation. The 41 Contractor shall conduct the demonstration using the same type of equipment to be 42 used for the production bridge decks, except that the Contractor may elect to finish the 43 test slab with a hand-operated strike-board. 44 45 After the construction of the test slab and the demonstration of bridge deck construction 46 operations is complete, the Contractor shall remove and dispose of the test slab in 47 accordance with Sections 2-02.3 and 2-03.3(7)C. 48 49 6-02.3(10)D2 Preparation for Concrete Placement 50 Before placing bridge approach slab concrete, the subgrade shall be constructed in 51 accordance with Sections 2-06 and 5-05.3(6). 52 AMENDMENTS TO THE 2014 STANDARD SPECIFICATIONS BOOK Revised: 8/3/15