413Sealing 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 joints, cracks and adjacent surfaces to the sa tisfaction of the Engineer. Air compressors shall be equipped with suitable traps and/or filters capable of removing moisture and oil from the compressed air. The equipment for cleaning and filling joints shall be that necessary for exposing the PCC joint by removing any existing asphalt over the joint by milling or other approved methods, cleaning the joint by removing existing materials from the joint, and placing the specified joint filler materials in accord ance with these specifications. 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 to the required elevation while the material is at the proper temperature. Cleaning equipment shall consist of mechanical or hand operated devices capable of removing all existing joint materials (soil, asphalt, debris) to the depth specified herein, without causing damage to the existing joint f aces or the surface of the PCC pa vement. Prior to filling the joint, it shall be blown free of all loose materi al by compressed air. Air compressors shall be equipped with suitable traps and/or filters capable of removing moisture and oil from the compressed air.

413.03.2 Construction Methods .

413.03.2 1--Cleaning and Sealing Joints and Cracks. Joints and cracks to be sealed

shall be cleaned by routing, sawing and/or sand blasting to the minimum dimensions specified. Other methods of cleaning joints and cracks shall be approved by the Engineer. The surface which is to receive the new joint sealing material shall be dry and free of all lubricants, tar, asphalt, discolora tion and stain as well as all other forms of contamination leaving a clean newly expose d surface. The adj acent surfaces of the pavement shall be cleaned to the extent necessary to prevent foreign matter from entering the joint before pouring. If necessary, re-c leaning shall be performed immediately prior to pouring. Prior to pouring, suitable baffles shall be inserted in the top portion of the open joint, or other approved methods used as necessary, to control the flow of th e material into the joint. Should a joint or crack be deeper than the required dimension, a backer rod of the appropriate size shall be inserted into the opening to prevent the material from being placed in excess of the required depth. Cracks shall be cleaned and sealed in the sa me manner as for joints. The Engineer may permit small cracks to be cleaned only by compressed air and sealed with joint sealing material. Traffic shall not be allowed to travel over the sealed joints/cracks until the joint sealing material is dry enough to prevent tracking. When approved by the Engineer, the Contractor may place concrete sand or other approved material over the joint/crack to prevent tracking. 413.03.2.2--Cleaning and Filling Joints. Joints to be filled shall be cleaned by routing, sawing and/or sand blasting to the minimum dimensions specified. Other methods of cleaning joints shall be approved by the Engi neer. The surface which is to receive the new joint sealing material shall be dry and free of all lubricants, tar, asphalt, discoloration and stain as well as all other forms of c ontamination leaving a clean newly exposed surface. The adjacent surfaces of the pavement shall be cleaned to the extent necessary to prevent foreign matter from entering the joint before pouring. If necessary, re-cleaning shall be performed immediately prior to pouring. The flow of the material into the joint shall be controlled before pouring by the insertion of baffles in the top portion of the open joint, or other approved methods can be used as necessary. Should a joint or crack be deeper than the required dimension, a backer rod of the appropriate size shall be inserted into the opening to prevent the material from being placed in excess of the required depth. After the joint is filled to the required depth with joint sealing material, add aggregate material until the joint is even with the adjacent roadway. Traffic shall not be allowed to travel over the sealed joints/cracks until the joint sealing material is dry enough to prevent tracking. When approved by the Engineer, the Contractor may place concrete sand or other approved material over the joint/crack to prevent tracking.

413.03.3 Sawing and Se aling Transverse Joints in Asphalt Pavement.

413.03.3 1--General. The Contractor’s operation shall be conducted so that sawcutting

of transverse joints, cleaning, and sealing is a continuous operation. The entire sawing and sealing operation shall be completed within seven (7) days after the placement of the final wearing course, unless the approved traffic control plan or sequence of operations provide otherwise. Traffic shall not be allo wed on sawed unsealed joints in the final wearing course. When intermediate lifts must be exposed to tr affic for over seven (7) days, the Contractor shall be required to make an interim 1/8-inch wide saw cut which is one third (1/3) as deep as the asphalt layer. This interim saw cut does not require sealing. Costs of any interim cut(s) shall be included in the pay ite m for sawing and sealing transverse joints in asphalt pavement. The detail for sawing and sealing transverse joints in asphalt pavement shall be as shown below. No sawing and sealing of transver se joints will be required in Open Graded Friction Courses (OGFC). However, the lif t under the OGFC will require sawing and sealing. Saw cutting shall be done only after the asphalt has cooled to ambient temperature.

413.03.3 2--Sawcutting of Transverse Joints. The Contractor shall sawcut transverse

joints in the pattern and to the dimensions shown on the plans or as directed by the Engineer. The sawcut joints shall be directly over the existing portland cement concrete pavement joints and shall be accurately located by a method employing pins and stringline. The pins shall be accurately located prior to paving. Details of the Contractor's method for locating the sawcuts shall be subject to the approval of the Engineer. The blade or blades shall be of such size and configuration that the desired dimensions of each sawcut can be made with one pass. No spacers between blades will be allowed. Either dry or wet cutting will be allowed. The transverse sawcut joints shall normally extend the full width of the pavement unless otherwise shown on the plans or directed by th e Engineer. Existing transverse joints that are offset at the longitudinal joint by more than one inch, measured between the centers of the joint cavities, shall require separate sawcuts terminating at the longitudinal joint.

413.03.3 3--Cleaning. Dry sawed joints shall be thorou ghly cleaned with a stream of air

sufficient to remove dirt, dust or deleterious matter adhering to the joint walls or remaining in the joint cavity. Wet sawed joints shall be thoroughly cleaned with a 50 psi minimum, water blast immediately after sawing to remove any sawing slurry, dirt or deleterious matter adhering to the joint walls or remaining in the joint cavity. Wet sawed joints shall be blown with air to provi de dry joint surfaces prior to sealing. All sawing slurry from the wet sawing process shall be immediately flushed from the pavement surface. Dry dust and material from the dry sawing process shall be blown or brushed off the pavement surface. The Contractor shall be required to provide pr otective screening, subj ect to the approval of the Engineer, if cleaning operations are capable of causing damage to or interference with traffic in adjacent lanes.

413.03.3 4--Sealing. Just prior to sealing, each joint shall be thoroughly cleaned of all

foreign material and the joint faces shall be clean and surface dry when the seal is Existing Concrete PavementExisting Joint3/8" Min. Saw Cut Req'd.Fill to 1/16" to 1/8"Hot Poured Elastic Sealant Req'd.Variable Depth Asphalt Overlay Required DETAIL OF SAWING AND SEALING TRANSVERSE JOINTS1" Min. applied. Sealant material shall be at the pouring temperature recommended by the manufacturer when applied to the joints. Hot applied sealant material shall be stirred during heating so that localized overh eating does not occur. The sealant shall fill the joint such that, after cooling, the sealed joint conforms to the details shown on the plans or as directed by the Engineer. The pouring shall be performed in such a manner that the material will not be spilled on the exposed surfaces of the asphalt pavement. Any excess material on the surface of the asphalt pavement shall be removed immediately and the paveme nt surface cleaned. Th e use of sand or similar material as a cover for the seal will not be permitted. Poured joint sealing material shall not be placed when the air te mperature in the shade is less than 50°F., unless approved by the Engineer. 413.03.4--Cleaning and Filling Joints. Any existing asphalt over the joint shall be removed by milling or other approved methods so as to expose the PCC joint for cleaning and filling. All existing joint materials (soil, asphalt, debris) and any loose, spalled or delaminated materials shall be removed to the depth specified herein, without causing damage to the existing joint f aces or the surface of the PCC pavement. Joints shall be filled immediately upon cleaning. The joint sha ll be filled to the speci fied depth with the required filler(s) as shown in the applicable detail. When asphalt or aggregate is placed as joint filler, the asphalt or aggregate shall be slightly mounded in the joint and compacted as directed by the Engineer to seat the asphalt or aggregate in the joint. After compaction, excess material (asphalt or aggregate) shall be removed and the pavement surface cleaned as necessary, so as to leave the asphalt or ag gregate filler flush with the existing PCC pavement. Any existing asphalt over the joint which requires removal shall be replaced with either 9.5-mm or 12.5-mm as phalt or the same mixture as that specified for the wearing course to be placed under the contract, if required. The asphalt shall be properly compacted with a roller or other mechanical compaction device approved by the Engineer, either prior to openin g to traffic, or prior to placem ent of the subsequent overall asphalt course. Placement of any required subsequent overall asphalt course shall begin upon completion of the cleaning and filling operation. For PCC pavements without existing asphalt overlays in place and which ar e not to be overlayed with asphalt under the contract, joints shall be cleaned and fill ed as described above and as shown on the applicable detail. Joint Cleaning And Filling Detail For PCC Pavements With Existing Asphalt Overlay Joint Cleaning And Filling Detail For PCC Pavements Without Existing Asphalt Overlay Variable Depth Asphalt -- Remove as necessary to expose PCC Joint 1" 2 1/4"Clean & Fill Joint Width 1 1/2" Max. Variable Depth Asphalt -- Remove as necessary to expose PCC Joint 3 1/2" Joint Width Greater Than 1 1/2"Seal Aggregate Required Not A Separate Pay Item Hot Poured Joint Filling Material Req'd.Not a Separte Pay Item Asphalt Required Not A Separate Pay Item Clean & Fill Existing PCC Pavement Surface 2 1/4"Clean & Fill Joint Width 1 1/2" Max. 3 1/2" Joint Width Greater Than 1 1/2"Hot Poured Joint Filling Material Req'd. Not a Separte Pay Item Asphalt Required Not A Separate Pay Item Clean & FillExisting PCC Pavement Surface Joints less than one-half inch in width will not be cleaned and filled.

413.04 Method of Measurement . Joint sealer material will be measured by the gallon

for separate payment only when the proposal has a pay item for joint material. Accepted joints and cracks, cleaned, sealed a nd/or filled, will be measured by the linear foot or mile as indicated in the contract proposal. Cleaning and filling joints in PCC pavement will be measured by the linear foot or mile of joint. Removal of existing asphalt over the joint, joint filler aggregate, bituminous material, and the replacement of asphalt over the joint, if applicable, will not be paid for separately but will be included in the unit pr ice per linear foot fo r cleaning and filling joints in PCC pavement. Sawed and sealed joints in new asphalt paveme nt will be measured by the linear foot of joint complete in place and accepted by the En gineer. Sawing and jo int sealant material will not be paid for as separate pay items but will be included in the unit price per linear foot for sawing and sealing transver se joints in asphalt pavement.

413.05 Basis of Payment . Joint sealer material will be paid for by the gallon when

measured as prescribed above, which price shall be full compensation for all materials, equipment, tools, labor and incident als necessary to complete the work. Joints and cracks, cleaned, seal ed and/or filled, will be paid for by the linear foot or mile as prescribed in above, which price shall be full compensation for all materials, equipment, tools, labor and incident als necessary to complete the work. Sawing and sealing transverse joints in ne w asphalt pavement, accepted and measured as prescribed, will be paid for at the contract unit price per linear foot; which price shall be full compensation for locating and transferring th e location of existing joints to establish new joint locations, for all required sawing, fo r furnishing all materials, including joint sealant materials, for all cleaning, pouring, trimming, cleanup and disposal of all excess and waste, for protective screening; for all pertinent operations necessary and incidental to the construction as indicated herein, and for all equipment, tools, labor, and incidentals necessary to complete the work. Cleaning and filling joints in PCC pavement, measured as prescribed above, will be paid for at the contract unit price per linear foot or mile, which price shall be full compensation for furnishing all materials including filler aggregate and bituminous material, for all work required to expose the PCC joint, for cleaning, filling, and compacting the joint, for placing any required asphalt over the joint prior to the placement of the subsequent overall asphalt course, if applicable , and the cleanup and disposal of all excess and waste; for all per tinent operations necessary and incidental to the construction as herein indicated, and for all equipment, tools, labor and incidentals necessary to complete the work. The cost of maintenance of traffic and protective services as required by the Department's Traffic Control Plan shall be included in the cost of items bid. This shall include all required individual traffic control devices. Payment will be made under: 413-A: Joint Sealer Material - per gallon 413-B: Cleaning and Sealing Joints - per linear foot or mile 413-C: Cleaning and Sealing Cracks - per linear foot or mile 413-D: Cleaning and Filling Joints * - per linear foot or mile 413-E: Sawing and Sealing Transverse Joints in Asphalt Pavement - per linear foot * Indicated if PCC Pavement SECTION 423 - GROUND -IN RUMBLE STRIPS

423.01 Description. This work consists of grinding rumble strips at the locations

indicated on the plan, in accordance with the details on the plans, and the requirements set out herein.

423.02 Blank.

423.03 Construction Requirements.

423.03.1 Equipment. The equipment shall consist of a rotary type cutting head capable

of cutting rumble strips to the dimensions shown on the plans. The cutting head shall have the cutting tips arranged in such pattern as to provide a relatively smooth cut of approximately 1/8 of an inch between peaks and valleys. The cutting head(s) shall be on its own independent suspension from that of the power unit to allow the tool to self-align with the slope of the shoulder and/or an y irregularities in the shoulder surface. The finished rumble strips shall be cut to the dimensions as shown on the plans within the allowable tolerance and be perpendicular to th e direction of travel. The rumble strips shall be placed in relation to the roadway according to the patterns shown on the plans. Adequate back-up equipment such as mechani cal sweeper/vacuum, wa ter truck, etc. and personnel shall be provided to remove all grindings from the shoulder.

423.03.2 Construction Details. The cutting tool shall be equipped with guides to

provide a consistent alignment of each cut in relation to the edge line and to provide uniformity and consistency throughout the project. The alignment of the cuts shall not deviate from the path of the edge line. When the contract requires shoulder paving, the rumble strips shall be cut into the finished shoulder after the final course has been placed, otherwise, rumble strips shall be cut into the existing shoulder material. The debris/grindings generated from the cutting shall be picked up and removed on a daily ba sis by use of a sweeper/vacuum or other method approved by the Engineer. The shoulder shall be cleaned prior to opening the adjacent lane to traffic. Any other method of cleaning debris from the shoulder or roadway other than picking up shall be approved by the Engineer prior to beginning