505 E Central Ave #B - DEF 1 - Plan

Home Browse Search

CITY OF SANTA ANA SPECIFICATIONS PROJECT NO.: XX-XXXX PROJECT TITLE 52 Rolling shall commence at a time interval following the millin g, mixing, and spreading of the recycled pavement mixture as determined by the mix design or directed by the Contractor. Time intervals shall be based on ambient temperatures, weather, and type of emulsified recycling agent. When possible, rolling shall not be started or stopped on uncompacted material. Compacting of the recycled pavement mixture shall be completed using rollers meeting the requirements of these special provisions. The rolling pattern shall be changed and a new rolling pattern shall be established when:  Relative compaction cannot meet the requirements of these specifications.  There are changes in recycled pavement mixture or proportions.  There are changes in placement equipment or procedures.  There is a significant change in temperature or weather conditions or controlling factor.  There is major displacement and/or cracking of the recycled pavement mixture. The final compacted surface of the recycled pavement mixture shall be free of ruts, bumps, indentations, raveling, irregularities, or segregation and shall meet the smoothness requirements of these specifications. Cold recycled asphalt concrete that does not conform to these special provisions shall be reworked, re-compacted, or removed and replaced at the Contractor's expense. Initial Compaction After compaction but prior to opening the roadway to traffic, the average in -place density shall be determined based upon nuclear gage readings at random locations. During in-place density testing of the compacted recycled pavement, the nuclear gauge shall be set to the recycled section thickness. The average in -place density shall be used to calculate the relative compaction for each lot. The relative compaction shall be not less than 95 percent or greater than 105 percent of the maximum density obtained in the test strip as required in these special provisions. If additional rolling does not achieve relative compaction, a new rolling pattern shall be established such that a new maximum density is determined. However, care should be taken not to over-roll the mat based on visual observations of check cracking or shoving. After initial compaction has been achieved, and prior to opening the recycled pavement mixture to traffic, the Contractor shall apply a fog seal of dilute (1:1) SS-1h emulsion, dilute emulsified recycling agent or equivalent at a rate of 0.08 to 0.12 gallon per square yard to all areas opened to traffic. Immediately following application of the fog seal, the cold in-place recycled pavement surface shall be covered with sand at a rate of 1.0 to 2.0 pounds per square yard. The exact rate will be determined by the Contractor. Excess sand shall be removed from the pavement surface by sweeping. Sand shall be free from clay or organic material. 505 E Central Ave #B11/6/2024