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constant and wide fluctuations of temperature during the day will not be <br /> permitted . Asphaltic concrete whose temperature is less than 210oF when <br /> delivered to the job site may result in immediate rejection from application by <br /> the Engineer. All material rejected by the Engineer shall be replaced with <br /> specified material by the Contractor at no additional cost to the Owner. <br /> B . The asphaltic concrete shall be applied by an approved type of self propelled <br /> paver, such as a Barber Green, capable of making a continuous 10 ft. wide <br /> pull . The paver shall have a disbursing hopper, a compacting devise, and a <br /> screed capable of adjustment to produce the required paving cross section. <br /> The screed shall be equipped with heaters . <br /> Co Immediately after the asphaltic concrete is spread, any deviations from the <br /> typical section shall be remedied by placing additional material or by <br /> removing surplus material while the mixture is still hot. <br /> D . Rolling should begin as soon as possible after the asphaltic concrete has been <br /> spread as specified. Rolling of the longitudinal joint should be immediately <br /> behind the paving operation. The initial pass with the roller should be made as <br /> soon as it is possible to roll the bituminous mixture without cracking the mat <br /> or having the mix adhere to the roller wheels . <br /> E. The rolling shall be done by a " Rolling Train" , consisting of a steel wheel seal <br /> roller, and a pneumatic tired traffic roller and a steel wheel finish roller. All of <br /> which shall be on the job when the asphalt laying commences and remain on the <br /> project until the paving work has been completed. <br /> F . Rolling of the longitudinal joint should be immediately behind the paving <br /> operation . The initial pass with the roller should be made as soon as it is <br /> possible to roll the bituminous mixture without cracking the mat or having the <br /> mix adhere to the roller wheels . To prevent adhesion of the mix to the roller, the <br /> wheels should be kept moist with only enough water to avoid picking up the <br /> material . <br /> G. Steel wheeled rollers shall be of the tandem type . For seal rolling, these <br /> rollers shall weigh between 5 and 12 tons and for final rolling, they shall weigh <br /> between 8 and 12 tons . <br /> H. Traffic rollers shall be of the self propelled pneumatic tired type, equipped <br /> with at least seven (7) smooth tread, low pressure tires , with the tire pressure <br /> maintained between 50 to 55 pounds . Traffic rollers shall weigh between 6 <br /> and 10 tons . Wobble wheeled rollers are prohibited from rolling on this <br /> project. <br /> I . The speed should not exceed 3 mph for steel wheeled rollers or 5 mph for <br /> pneumatic tired rollers . <br /> J . Finish rolling should be done while the material is still workable enough for <br /> removal of roller marks , before the pavement temperature has dropped <br /> C : \ Down1oad \ techspec - 02305 . doc 02305 - 2 <br />