shall be in accordance with the QCP. The specified surface course shall be placed within two weeks of the RBC final cure, but no later than November 1. 308.14 Proofrolling The asphalt emulsion stabilized RBC shall be proofrolled in accordance with 203.26 using a tandem or tri-axle dump truck loaded to the legal limit. The Engineer 290 will determine the corrective remediation limits for any area that has deflection or rutting greater than 1/2 in. The Contractor shall rework the areas that fail proofrolling by re-pulverizing and re-stabilizing the RBC in-place at no additional cost or by removing the RBC and stabilizing the subgrade with subgrade trea tment Type IC in accordance with 207. The reworked areas shall be proofrolled for final acceptance. In locations of failing subgrade, the RBC shall be removed and subgrade treatment 300 Type IC shall be placed in accordance with 207. HMA patching, Type B shall be placed in accordance with 304 in place of the RBC.
308.15 Milling
The entire surface of the asphalt emulsion stabilized RBC shall be scarified in accordance with 306.04 in preparation for the overlay. Liquidated damages will not apply. Construction engineering in accordance with 105.08(b) shall be provided.
308.16 Underdrain Installation Underdrain installation in accordance with 718, when required, shall begin after 310
proofrolling has been completed. 308.17 RBC Overlay The overlay atop the RBC shall be as shown on the plans. The overlay shall be placed after proofrolling has been completed. The RBC shall be swept of all loose material and standing water with a rotary power broom in accordance with 409 immedi ately prior to placing the surface. The RBC shall be swept lightly to avoid damage to the RBC. A tack coat shall be required only for the HMA overlay and shall be applied to the RBC in accordance with 406 immediately following sweeping operations. Monuments shall be reestablished in accordance with 615.10.
308.18 Opening to Traffic Opening to traffic shall occur after suffic ient cure time in ac cordance with 308.13
has been applied to the RBC so traffic will not initiate raveling or permanent 308.14 299 deformation. All loose particles that may develop on the pavement surface shall be removed by a rotary power broom in accordance with 409. 330 After opening to traffic, the surface of the RBC shall be maintained for the safe movement of traffic. 308.19 Method of Measurement The RBC will be measured by the squa re yard, complete in place. Asphalt emulsion will be measured by the ton. Subgrade treatment will be measured in accordance with 207.05. Corrective aggregate used to adjust the RBC gradation will be measured by the 340 ton of material used. HMA patching, Type B will be measured in accordance with 304.06. Milling will be measured in accordance with 306.10. Re-established monuments will be measured in accordance with 615.13. Removal of snowplowable raised pavement markers will be measured in accordance with 808.12. Portland cement will be measured by the ton.
308.20 Basis of Payment 350
The RBC will be paid for as full depth reclamation at the contract unit price per square yard, complete in place. Asphalt emulsion will be paid for at the contract unit price per ton, complete in place. Subgrad e treatment will be paid for in accordance with 207.06. Corrective aggregate used to adjust th e RBC gradation will be paid for at the contract unit price per ton, complete in place. HMA patching, Type B will be paid for in accordance with 304.07, for the thickness shown on the plans. Milling will be paid for in accordance with 306.11. Re-established monuments 360 will be paid for in accordance with 615.14. Removal of snowplowable raised pavement markers will be paid for in accordance with 808.13. Portland cement will be paid for in accordance with 104.03. The change order will include direct material costs, delivery costs, and shall not include any other markups. Payment will be made under: Pay Item Pay Unit Symbol 370 Corrective Aggregate, FDR ....................................................... TON Full Depth Reclamation ............................................................. SYS Stabilizing Material, Asphalt Emulsion ..................................... TON Stabilizing Material, Portland Cement ...................................... TON 308.20 The costs of the RBC mix design and QC testing shall be included in the cost of the full depth reclamation. The costs associated with removal of grass and vegetation, rubberized crack filler, durable pavement markings, loop wires and other non-pavement materials shall be 380 included in the cost of the full depth reclamation. The costs associated with pulverizing, stabilizing, compacting, curing, and maintenance of the RBC shall be included in the cost of the full depth reclamation. The cost associated with mixing water shall be included in the cost of the full depth reclamation. The cost associated with aggregate, wh en used to supplement material volume, shall be included in the cost of the corrective aggregate pay item. 390 When portland cement is a required stabilizing material, costs associated with mixing, installation, compaction, curing, and maintenance shall be included in the cost of the full depth reclamation. The cost associated with ag gregate, when used to adju st the RBC gradation, shall be included in the cost of th e corrective aggregate pay item. In the locations of failing subgrade, removal of the RBC shall be included in the cost of the subgrade treatment. 400 308.20 301 DIVISION 400 – ASPHALT PAVEMENTS