188 Rolling shall cease before the aggregate is crushed to any appreciable extent. Rollers shall be the type and weight specified in subsectio n 405.4.3. To ensure aggregate embedment before the emulsion has set, the minimum number of rollers shall be three (3). More rollers may be used to obtain compaction to the satisfaction of the Engineer. The roller speed shall not exceed 3 miles per hour to prevent aggregate pick up and ensure embedment. Water, to prevent adhesion of the asphalt material to the roller wheels, shall not be used in excessive amounts. The use of fuel oil, paraffin oil, and kerosene on rollers or other equipment, for the purpo se of preventing material from picking up or sticking, is prohibited. After the emulsion has cured, sweeping can commence. The status of being cured shall be determined by the ability to sweep all loose aggregate from the surface without removing any aggregate adhered to the asphalt emulsion. TABLE 405.9 Project’s Annual Average Daily Traffic (AADT) - Sweeping Requirements Less than 500 AADT 501 to 5,000 AADT Greater than 5,000 AADT Within 24 hours after rolling No later than the following morning Before traffic is allowed without traffic control
405.10 Joints :
The longitudinal construction joints between adjacent lanes shall be kept clean of material foreign to the surface being treated. The joints shall be constructed without overlaps or gaps between the materials. The beginning of the project and all transverse joints shall be covered with paper to prevent overlapping of the seal and provided a uniform joint. Following its use, the paper s hall be removed and disposed of satisfactorily.
405.11 Protection of Pavement and Traffic Control :
The Contractor shall be responsible for the protection of the surface against damage by their equipment and personnel. Traffic shall not be permitted on any part of the work under construction until sweeping has been completed. The applicable provisions of 636 shall apply for regulating traffic.
405.12 Sequence of Operations and Quanti Ties of Materials :
The quantities and kinds of materials to be used and the sequence of applications and operations for the various treatments shall be as follows. Application rates shall be according to the Contractor’s provided chip seal design. Typical rates are shown b elow. Maximum quantities of asphalt emulsion may be used only when the old surface is open or porous. Sweep each layer when applying multiple layers. The rates of aggregate and asphalt emulsion may be adjusted by the Engineer.