Outline of rapid treatments for bridge deck protection, repair, and. A hurdle to structural design with crr is that accurate, accessible methods for predicting. Deck patching involves sounding and marking areas of concrete. Repairing bridge deck cracks epoxy bonding is an economical solution. Largescale deck repair or replacement work should typically include projectspecific plans and be in accordance with item 422, concrete superstructures. Full depth rigid pavement slab repair detail section 88.
Specification requirements 1 specify on the plans if cement type other than type i or type ii will be used. Deck slab repair illinois department of transportation. Damage in the top of the deck only not progressing full depth is. It crosses the colorado river at robert lee, coke county, texas. The servicelife performance of concrete bridge decks, including maintenance, repair, and rehabilitation needs, is directly related to the care exercised from the preconstruction through postconstruction period. The main preventive maintenance objective for concrete bridge decks is to. The following will describe the recommended procedure to use when installing meldek bridge deck membrane from w. Concrete bridge detail concrete bridge detail dwg file,concrete bridge detail download. This backing can be a cement and sand mortar mix, such as meadow patch 20 repair mortar from w.
Patching procedure using bridge floor slab patching concrete 7. Reinstatement with concrete or mortar can take several different forms depending on the size of the area being repaired and the means of applying the. The need for deck patching is almost always caused by corrosion of the reinforcement. Ac 15053806b september 28, 2007 appendix c figure c 9. Concrete deck slab details the following detailing practice is intended to minimize the bridge deck cracking in both transverse and longitudinal directions. In bridgedeck overlay repairs, premature reflective cracking is often the ultimate failure mode that limits repair service life.
Sealants and waterproofing technical drawing balcony at patio door dxf. Li, in advanced composites in bridge construction and repair, 2014. Jan, 2014 the adm core hole repair kit available online at. Repairing bridge deck cracks concrete construction magazine. Waterproofing for bridge decks to increase the durability of reinforced concrete bridges, all concrete movement and construction joints, plus the bridge decks have to be waterproofed to prevent serious damage to the concrete, or to the embedded steel reinforcement. Our concrete accessories product categories include. Ultrahigh performance concrete composite connections for. January 25, 2019 purpose this manual includes stepbystep repair procedures for use on new and existing concrete members cast.
The primary use of this section is to address unanticipated localized bridge deck damage that typically must be. Many times bridge decks have more cracks than is practical, from a cost and downtime perspective, to be repaired by crack injection. The work shall be done according to the applicable. Castinplace concrete connections for precast deck systems. The deck may be cracked through the entire depth of the concrete slab or cracked only in the unbonded concrete overlay. Graduate theses and dissertations iowa state university capstones, theses and dissertations 2014 methods for removing concrete decks from steel girder bridges. Placing concrete place concrete into the repair area from readymix truck or other mobile batch vehicles. Cause and control of transverse cracking in concrete bridge decks. Masteremaco t545 formerly called set 45 is a quicksetting onecomponent magnesium phosphatebased patching and repair mortar. Route 208 colorado river bridge at robert lee description. Each bridge standard details sheet has been prepared by a technical owner, who is a registered civil engineer in the state of california.
Curb or curb and gutter adjacent to roadway andor sidewalk across bridge standards,roadway sections 611985. The details are considered to be project plans for contract administration purposes in accordance with section 51. Concrete bridge deck, deterioration, patching materials, corrosion, durability. The overlays were bonded to the old deck concrete by portland cement grout. There are three imperatives for repairing cracked bridge decks. Closeup of cleaned concrete deck and trapped dust and debris in the cracks before being blown out clean with air. Preparation of the transition from the concrete deck to the curb horizontal to vertical transitions needs to be a chamfer material may need to be applied to give solid backing to the detail strip. Proper patch detail excavate around bars especially when chlorides are present. State of the practice southeast bridge preservation partnership april 14, 2011 raleigh, nc presented by michael c. Repairs are sometimes known as patch repair when the area to be treated is small and skin repair when, for example, the whole side of a member is to be broken out and reinstated. This concrete repair and anchoring material uses a chemical action for quick curing.
Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design. Wall forming accessories ties, coil products, brackets. Aci 345r11 guide for concrete highway bridge deck construction. Masteremaco t 545 quickset concrete roadway patching mortar. This page contains a listing of all the approved bridge detail bd sheets that have been issued. Partialdepth bridge deck repairs are typically performed on fulldepth castin place bridge decks. Epoxy injection method is used for cracks as narrow as 0. How to repair concrete slab core holes with the adm core.
The next part of the sheet number is a two letter id which is used to group sheets with a similiar theme ex. M400ar is specially designed for hot weather bridge deck applications and where heavy equipment will be driven on the. As a result, there is an interest in using precast concrete deck elements to accelerate onsite construction activities while simultaneously increasing the quality of the bridge deck concrete. This section covers bridge deck repairs over relatively small areas. These cad drawings are available to purchase and download immediately. The unrestrained shrinkage of a concrete mixture with the vdot minimum paste requirements is approximately 1in100ft. Reinstatement with concrete or mortar can take several different forms depending on the size of the area being repaired and the means of. M400ar is specially designed for hot weather bridge deck applications and where heavy equipment will be driven on the deck immediately after membrane installation. Wisconsin department of transportation bridge manual. It is a biobased, nonhazardous, extremelylow voc product primarily used as a component of an expansion joint assembly either to fill blockouts on each side of an expansion joint gap, to repair a damaged expansion joint gap edge, as an impact. Concrete, deck, cracking, cracks, transverse, bridges, causes of cracking, control of cracking unclassified unclassified 204 fhwanj2002019 m.
The primary use of this section is to address unanticipated localized bridge deck damage that typically must be repaired quickly. As mentioned in chapter 1, the focus of nchrp 1071 was to develop specifications, guidelines, and examples for the design and construction of durable castinplace cip reinforced concrete connections for precast deck systems that emulate monolithic construction, considering issues including speed of construction, durability, and fatigue. These are often referred to as alligator cracks or spider webs. The technique generally consists of establishing entry and venting ports at close intervals along the cracks, sealing the crack on exposed surfaces, and injecting the. The bridge deck is the roadway portion of a bridge, including shoulders. A dot type grade concrete roadway repair and anchoring material, with a minimum initial set time of. The minimum amount of reinforcement in each direction shall be 0. Consequently, decks may require more maintenance and repair than other bridge components. The shear connector devices can be rolled in embossments, lugs, holes or wires welded to the panels. Bridge deck overlays 91220 1 bridge deck overlay projects 101 presentation by central office bridge rehabilitation group a protective wearing surface placed on a usually existing bridge deck to prolong the service life and to provide a smooth riding surface what is a bridge deck overlay. Because it is light weight and can be installed with hand tools after the bridge is set, it is often the material of choice for bridges that might be moved, or are to be put in sites with. This work shall consist of hotmix asphalt surface removal, when required, the removal and disposal of all loose and deteriorated concrete from bridge deck and the replacement with new concrete to the original top of deck. Hma shall follow section 408 of the standard specifications.
Portland cement concrete overlays were used on both bridges. We are dedicated to be the best cad resource for architects,interior designer and landscape designers. Bd sheets are intended to show how the typical parts that make up a bridge are to be detailed. Concrete bridge decks and deck overlays may develop cracks whenever the tensile stresses induced by either internal or external sources exceed the tensile strength of the concrete. First, determine if the cracks are structural or nonstructural. Economical, rustic and natural, wood is specified on at least half the bridges excel builds. The standard sheet books are also available as compiled. Bridge rehabilitation or repairbridge rehabilitation or repair. The bond breaker allows the patch and the old concrete to move independently. Aci 345r11 guide for concrete highway bridge deck construction author. Standard sheets are available both in the us customary units accessible below and in metric units. Furthermore, effective january 1, 2001 the dot issued new mixture requirements for portland cement concrete patching. To increase the durability of reinforced concrete bridges, all concrete movement and construction joints, plus the bridge decks have to be waterproofed to prevent serious damage to the concrete, or to the embedded steel reinforcement. Due to dynamic loading, the bridge decks must be protected with elastic, crackbridging systems to accommodate any movement and maintain the protection.
This aasho h20 bridge is located on state route 208. The report addresses the partial removal of concrete from decks and other parts of bridge structures. An elastomeric concrete nosing material, emcrete is flexible, durable, impact resistant. Methods for removing concrete decks from steel girder bridges. Distribute the concrete evenly to avoid the need of excessive shoveling. Cause and control of transverse cracking in concrete. Concrete repair technical drawing concrete repair patch edge treatment dxf technical drawing concrete repair patch edge treatment. The deck profile configuration can also be used to interlock concrete and steel. It is intended as a practical guide for state highway agency and contractor personnel who face the challenge of using new and appropriate technologies for concrete removal and bar. Several sources of cracking for concrete bridge deck overlays have been identified 2, 3, 7. The deck is vulnerable to the effects of mechanical wear and weather.
One problem with the use of this type of modular decking system is the composite connection that ties the deck panels to the supporting girders. This is a bridge deck patching concrete with a micro silica overlay. Concrete bridge decks resist wear and weather well, provide good traction and ride quality, and in many designs provide a part of the structural strength of the bridge. Technical drawing typical installation details technical drawing typical layout for slab and slab edge repair. Pedestrian bridge deck types excel bridge manufacturing. A bridge floor is the entire length of the bridge from the roadway side of the mudwall or pile cap to the other roadway side of the mudwall or pile cap and the entire width from one coping edge across to the other coping edge. Concrete bridge decks do not need expansion joints wood. Concrete bridge detail concrete bridge detail dwg file, concrete bridge detail download. Ala saadeghvaziri and rambod hadidi cause and control of transverse cracking in concrete bridge decks department of civil and environmental engineering new jersey institute of technology. Structural design guidelines for concrete bridge decks. The guide will cover recommended tools to use, deck preparation before membrane installation, the membrane installation, and the procedures to follow when placing the asphalt wearing course on the membrane. M400ar is a 70 mil, internally reinforced sheet waterproofing membrane with a built in white reflective topping. How to repair concrete slab core holes with the adm core hole.
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