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1 6-09.3(15) Sealing and Texturing Concrete Overlay <br /> 2 After the requirements for checking for bond have been met, all joints and visible cracks <br /> 3 shall be filled and sealed with a high molecular weight methacrylate resin (HMWM). The <br /> 4 Contractor may use compressed air to accelerate drying of the deck surface for crack <br /> 5 identification and sealing. Cracks 1/16 inch and greater in width shall receive two <br /> 6 applications of HMWM. Immediately following the application of HMWM, the wetted <br /> 7 surface shall be coated with sand for abrasive finish. <br /> 8 <br /> 9 After all cracks have been filled and sealed and the HMWM resin has cured, the <br /> 10 concrete overlay surface shall receive a longitudinally sawn texture in accordance with <br /> 11 Section 6-02.3(10)05. <br /> 12 <br /> 13 Traffic shall not be permitted on the finished concrete until it has reached a minimum <br /> 14 compressive strength of 3,000 psi as verified by rebound number determined in <br /> 15 accordance with ASTM C805 and the longitudinally sawn texture is completed. <br /> 16 <br /> 17 6-09.3(1)B Rotary Milling Machines <br /> 18 This section is revised to read: <br /> 19 <br /> 20 Rotary milling machines used to remove an upper layer of existing concrete overlay, <br /> 21 when present, shall have a maximum operating weight of 50,000 pounds and conform <br /> 22 to Section 6-08.3(5)B. I <br /> 23 <br /> 24 6-09.3(1)C Hydro-Demolition Machines <br /> 25 The first sentence of this section is revised to read: 111 <br /> 26 <br /> 27 Hydro-demolition machines shall consist of filtering and pumping units operating in <br /> 28 conjunction with a remote-controlled robotic device, using high-velocity water jets to <br /> 29 remove sound concrete to the nominal scarification depth shown in the Plans with a <br /> 30 single pass of the machine, and with the simultaneous removal of deteriorated concrete. <br /> 31 <br /> 32 6-09.3(1)D Shot Blasting Machines <br /> 33 This section, including title, is revised to read: <br /> 34 <br /> 35 6-09.3(1)D Vacant <br /> 36 <br /> 37 6-09.3(2) Submittals <br /> 38 Item number 1 and 2 are revised to read: <br /> 39 <br /> 40 1. A Type 1 Working Drawing consisting of catalog cuts and operating parameters of <br /> 41 the hydro-demolition machine selected by the Contractor for use in this project to111 <br /> 42 scarify concrete surfaces. <br /> 43 <br /> 44 2. A Type 1 Working Drawing consisting of catalog cuts, operating parameters, axle <br /> 45 loads, and axle spacing of the rotary milling machine (if used to remove an upper <br /> 46 layer of existing concrete overlay when present). <br /> 47 <br /> 48 The first sentence of item number 3 is revised to read: <br /> 49 <br /> 50 A Type 2 Working Drawing of the Runoff Water Disposal Plan. <br /> 51 <br /> 52 6-09.3(5)A General <br /> 53 The first sentence of the fourth paragraph is revised to read: <br /> HOT MIX ASPHALT OVERLAY-2018 PAGE 18 OF 53 March 6,2018 <br /> WORK ORDER#3667 <br /> AMENDMENTS TO STANDARD PROVISIONS <br />