Section 411 Section 411 Tack coat will be measured and paid as set out in Section 407.
411.05 Basis of Payment. Ultra-thin asphalt pavement, m easured as prescribed above,
will be paid for at the contract unit price per ton, which price shall be full compensation for completing the work. Payment will be made under the following items: 411-A: Ultra-Thin Asphalt Pavement -per ton SECTION 412 - PRE-GRINDING
412.01 Description. This work shall consist of grinding existing pavement surfaces to
substantially eliminate bumps/knots in the existing pavement which results will improve riding characteristics of the finished paveme nt surface. The work shall be accomplished in accordance with these specifications and in reasonably close conformity to any details on the plans or in the contact documents. Pre-grinding will be allowed, and paid for, on certain projects in which a pay item for pre-grinding is included in the bid items. Pre- grinding will be allowed at the Contractor’s option on all other projects, but at no cost to the State. The Contractor may elect to pre- grind bumps in the existing pavement surface to improve riding characteristics prior to placement of the new asphalt pavement. It is the intent of this specification to remove bumps which cannot be eliminated during the paving operation but not to pre-grind areas that can be corrected with the asphalt overlay.
412.02 Blank.
412.03 Construction Requirements. Prior to any paving operations, the Contractor
shall run a profile of the existing pavement as required in Subsection 403.03.2.1. This profile shall be used to determine if and wher e any areas are located with a short interval MRI value of 160 inches per mile or more. With approval of the Engineer, these areas may be ground prior to placement of the asphalt overlay. Equipment for pre-grinding shall meet the requirements set forth in Section 406 of the Standard Specifications, or other equipment approved by the Engineer. The Contractor shall establish positive means for removal of grinding residue. Solid residue shall be removed from pavement surf aces before it is blown by traffic action or wind. Residue shall not be permitted to flow across lanes used by public traffic or into gutters or drainage facilities, but may be allowed to flow into adjacent ditches.
412.04 Method of Measurement. When a pay item is included in the contract, Pre-
Grinding of existing pavement will be measur ed by the square foot of area approved by the Engineer.
412.05 Basis of Payment. Pre-Grinding, measured as prescribed above, will be paid for
at the contract fixed price per square foot, which price shall be full compensation for all labor, tools, equipment, profiling, cleanup, and all incidentals necessary to complete the work. Payment will be made under: 412-A: Pre-grinding - per square foot SECTION 413 - SEALING AND FILLING JOINTS AND CRACKS
413.01 Description . This work consists of routing, sawing and/or cleaning, sealing
joints and cracks in existing pavement as designated by pay items in the contract proposal and as detailed on the plans and described herein. All work shall be in reasonably close conformity with these specifications and the de tails shown on the plans, or as directed. When called for on the plans, this work shall also consist of saw cutting, cleaning and sealing transverse joints in new bituminous concrete overlays. Bituminous concrete pavement joints shall be constructed over, and in line with, the existing underlying transverse portland cement concrete joints in accordance with plans, specifications, and as directed by the Engineer. This work may also consist of cleaning and filling joints in existing concrete pavement as designated by pay items in the contract proposal and as detailed and described herein or on the plans. This specification addresses existing PCC pavements with and without an existing asphalt overlays, whether to be overlaid under this contract or not.
413.02 Materials . Unless otherwise designated on the plans or in the contract
documents, the joint sealing material may be cold or hot poured material meeting the requirements of Subsection 707.02.1. The joint sealing material for sealing transverse joints in asphalt pavement shall be a hot- poured elastic type conforming to the requirements of Subsection 707.02.1.3. The bituminous joint filling material for cleaning and filling joints shall be hot poured material meeting the requirements of Subsection 707.02.1.3, or the type designated on the plans. When asphalt is specified to fill joints, the mixture used shall be either 9.5-mm or 12.5-mm asphalt, or the same as that specified for the wearing course to be placed under this contract, if applicable. Unless otherwise specified in the plans or in the contract documents, the aggregate materials shall be size 89. The aggregate material shall conform to the applicable requirements of Section 703.
413.03 Construction Requirements .
413.03.1 Equipment . The equipment shall be that necessary for routing, sawing,
cleaning and pouring the joint material as sp ecified. When required, heating equipment shall meet the requirements of Subsection 702.03. Pouring equipment shall be subject to the approval of the Engineer and shall be capable of pouring the joints and cracks to the required elevation while the material is at the proper temperature. Cleaning equipment shall consist of mechanical or hand operated devices capab le of thoroughly cleaning the