Full depth pcc patching

Full depth patches figure 2 are used to restore localized areas of slab damage that extend. The distance depends on the method of lapping used to connect reinforcement. Here are a couple other services often requested with fulldepth patching. The pavement thickness is defined as the thickness of all bound materials in the pavement structure including asphalt mix, portland cement concrete pcc, and any other asphalt or cement. In this chapter, portland cement concrete pcc pavement distress types that require full depth repair are discussed, followed by the repair procedures. After the partialdepth cuts, two fulldepth sawcuts are then made at a specified distance in from partialdepth cuts.

Chapter 4 portland cement concrete pavement guidelines and policies chapter 4. Concrete pavement preserva tion, concrete panel replacement revised. Full depth patching project muscatine, ia official website. Full depth pcc finish patches, continuously reinforced, composite section. The minimum recommended distance from the full depth repair joints to the nearest transverse crack or joint is 1. These may be caused by complete failure or disintegration of the concrete by cracking and breaking or by blowups. Distinction is made between fulldepth patches and the more common potholetype patch. Gina ahlstrom office of preconstruction, construction and pavements 2023664612 email gina. Fulldepth repair or fulldepth patching entails remov. Guidelines for fulldepth repair national center for pavement.

Description perform all work shall in accordance with the departments current standard specifications, supplemental specifications, special note for full depth concrete pavement repair, applicable special provisions, and applicable standard and sepia drawings, except as hereafter specified. If the area to be patched is too close to an existing joint or. Fulldepth patching provides a smoother ride and can increase the life of the pavement, delaying the need for costly replacements and overlays. The 20192020 pcc full depth patching construction project consists of constructing portland cement p. The purpose of partial depth repairs is to correct localized areas of concrete.

Can be used in conjunction with joint resealing, diamond grinding, and full. Maintenance manual m 5101 chapter 3 pavement patching. Full depth patching bmp current document piq feedback common practice in districts where were going. If the condition is less severe, the following procedures. This procedure is for patching of full depth deterioration of transverse and longitudinal joints and their intersections. The recommended distance is 610 mm 24inches for tied laps, and 200 mm 8 inches for mechanical connections or welded laps. Bridge expansion joint repair is the resealing of the joint where the road meets the bridge deck. Portland cement concrete pcc patching at various locations including approximately 1,518 lf of pcc curb and gutter replacement, 888 sy of reinforced 7 pcc full depth patching, 1,124 sy of reinforced 8 pcc full depth patching, 2,049 sy of reinforced 9 pcc full depth patching, 1,767 sy of reinforced 10 pcc full depth patching, 642. Two general patching procedures are described next. This procedure is for patching full depth deterioration of pccp at joints and cracks. Sam tyson office of preconstruction, construction and pavements 20236626 email sam. Various conventional and modified cementitious materials, polymeric materials, and bituminous materials. Construct full depth pcc, hma, and composite patches.

For fulldepth repairs of pcc pavements for roads and streets only, use section 32. Partial depth patch used to repair spalling damage. The work shall consist of the partial depth patching of spalls, potholes and corner breaks in portland concrete pavement by removing the broken, damaged, or disintegrated concrete pavement, including any asphaltic concrete patches, from spalled or. If one lane patch exceeds 50 feet, both lanes should be lane. Portland cement concrete pcc patching at various locations including approximately 1,816 sy of reinforced 7 pcc full depth patching, 723 sy of reinforced 8 pcc full depth patching, 5,430 sy of reinforced 9 pcc full depth patching, 58 sy of reinforced 7 pcc full depth patching ia dot 5 hr. Crossstitchinga new repair procedure for pcc pavements, concrete pavement progress special. See chapter 82 for work zone traffic control considerations. Sawing concrete pavement full depth will be measured by the linear foot. Pothole patching procedures cover a wide range of methods and intentions from permanent full depth patches to temporary partial depth patches. Materials and methods for patching portland cement concrete pcc pavements are discussed. Full depth concrete patching is often necessary to repair failures in portland cement concrete pavement. Spall repair which becomes full depth repair because the depth of repair exceeds 4 inches shall be measured by the cubic yard as full depth pcc pavement repair full and partial depth portland cement concrete pavement repair. Full depth pcc patches will be measured in square yards of the n ominal su rface are a of the p atches.

Cliff selkinghaus asphalt materials manager scdot office. Specifications manual iowa statewide urban design and. This procedure is for repair of longitudinal joints or pavement edges with shallow spalls or honeycombing that are in the upper half of the pavement. Full depth patching, asphalt and concrete partial depth patching, asphalt and concrete longitudinal joint repair pcc paving bridge approaches company info. Semipermanent pothole patch figures 3 and 4 from fhwa, 1998 1.

The roadway surface is normally classified as rigid consisting of portland cement concrete or flexible consisting of asphaltic materials. Pcc patching and retro fit tie bars jbi completes several pcc full and partial depth patching projects annually. Patchingdefinitions fulldepth patches vdot types i and ii. For fulldepth patches or slab removal and replacement of airfield pavements, use section 32 14. This area will be measured in accordance to section 414. The object is to prolong the life of existing asphalt pavements by removing and replacing the damaged asphalt. Chapter 5 bituminous concrete pavement guidelines and policies chapter 5. One form of patching, pothole patching, probably receives the greatest amount of public attention. A pcc full depth patching process proceeds as follows acpa, 1995 1 locate the area to be patched.

In this chapter, portland cement concrete pcc pavement distress types that require fulldepth repair are discussed, followed by the repair procedures. Chapter 3 pavement patching and repair general the roadway is the paved or otherwise improved portion of a public highway ordinarily used for vehicular travel. Full depth pcc finish patches 50 feet or greater in length. Letting september 23, 2011 1revised table of contents page 2 of 97 2added significant project page 8 of 97 3revised special notes for pcc patching pages 912 of 97 4revised full depth concrete pavement repair pages 17 of 97. Fulldepth repair of jointed concrete pavement federal highway administration 1994 video vh273c this video begins with a discussion of distresses requiring fulldepth repair. Asphaltic patchingfull depth, pcc joint restoration, and pcc patchingfull depth are only eligible for federally funded preventive maintenance pm if they can be shown to be capital improvements see guidance in. The evaluation of five materials to be used for pothole patching in pcc pavements are presented and discussed in terms of projected durability and cost effectiveness.

The pavement designer must coordinate with the roadway designer to determine the necessary mot, taking into consideration how long a lane can be closed during the patching operation. Full depth repairs can improve pave ment rideabil ty and structural integrity and can extend pavement service life. Fulldepth pcc patching, various street, saw cutting, full depth removal and replacement. Early open to traffic if patch area small early strength mixes are possible cost can be lower than hma or pcc materials can place with common repairpatching equipment challenges. Full depth patch continuous reinforced pcc pavement. Full depth repair or full depth patching entails remov ing and replacing at least a portion of a slab to the bottom of the concrete, in order to restore areas of deterioration. Tb002p the national center for pavement preservation. Facilities development manual wisconsin department of. Fulldepth repair of jointed concrete pavement youtube. Full depth repair of jointed concrete pavement federal highway administration 1994 video vh273c this video begins with a discussion of distresses requiring full depth repair. Pothole patching procedures cover a wide range of methods and intentions from permanent fulldepth patches to temporary partial depth patches. A boundary that would fall at an existing doweled transverse joint should be extended 0. A highseverity condition indicates that a crack is greater than 12 mm 0. If the area to be patched is too close to an existing joint or crack, the patch area should be extended as follows.