Structural design guidelines for concrete bridge decks. 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. Due to dynamic loading, the bridge decks must be protected with elastic, crackbridging systems to accommodate any movement and maintain the protection. The unrestrained shrinkage of a concrete mixture with the vdot minimum paste requirements is approximately 1in100ft. Many times bridge decks have more cracks than is practical, from a cost and downtime perspective, to be repaired by crack injection.
Curb or curb and gutter adjacent to roadway andor sidewalk across bridge standards,roadway sections 611985. Largescale deck repair or replacement work should typically include projectspecific plans and be in accordance with item 422, concrete superstructures. Portland cement concrete overlays were used on both bridges. The deck is vulnerable to the effects of mechanical wear and weather. The details are considered to be project plans for contract administration purposes in accordance with section 51.
Cause and control of transverse cracking in concrete. 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. 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. Concrete, deck, cracking, cracks, transverse, bridges, causes of cracking, control of cracking unclassified unclassified 204 fhwanj2002019 m. 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. Repairing bridge deck cracks concrete construction magazine. Masteremaco t545 formerly called set 45 is a quicksetting onecomponent magnesium phosphatebased patching and repair mortar. This page contains a listing of all the approved bridge detail bd sheets that have been issued. Sealants and waterproofing technical drawing balcony at patio door dxf. Closeup of cleaned concrete deck and trapped dust and debris in the cracks before being blown out clean with air. Cause and control of transverse cracking in concrete bridge decks.
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. 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. 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. Partialdepth bridge deck repairs are typically performed on fulldepth castin place bridge decks. Deck slab repair illinois department of transportation. A dot type grade concrete roadway repair and anchoring material, with a minimum initial set time of. Repairing bridge deck cracks epoxy bonding is an economical solution.
The primary use of this section is to address unanticipated localized bridge deck damage that typically must be. Epoxy injection method is used for cracks as narrow as 0. This aasho h20 bridge is located on state route 208. Consequently, decks may require more maintenance and repair than other bridge components. A hurdle to structural design with crr is that accurate, accessible methods for predicting. Bridge rehabilitation or repairbridge rehabilitation or repair. It crosses the colorado river at robert lee, coke county, texas. State of the practice southeast bridge preservation partnership april 14, 2011 raleigh, nc presented by michael c. 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. Outline of rapid treatments for bridge deck protection, repair, and. Hma shall follow section 408 of the standard specifications. Wall forming accessories ties, coil products, brackets. Ac 15053806b september 28, 2007 appendix c figure c 9. How to repair concrete slab core holes with the adm core hole.
Furthermore, effective january 1, 2001 the dot issued new mixture requirements for portland cement concrete patching. First, determine if the cracks are structural or nonstructural. Several sources of cracking for concrete bridge deck overlays have been identified 2, 3, 7. Our concrete accessories product categories include. The report addresses the partial removal of concrete from decks and other parts of bridge structures. Route 208 colorado river bridge at robert lee description. Castinplace concrete connections for precast deck systems. Wisconsin department of transportation bridge manual. Placing concrete place concrete into the repair area from readymix truck or other mobile batch vehicles. The deck profile configuration can also be used to interlock concrete and steel. The main preventive maintenance objective for concrete bridge decks is to. 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. This backing can be a cement and sand mortar mix, such as meadow patch 20 repair mortar from w. 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.
Economical, rustic and natural, wood is specified on at least half the bridges excel builds. The need for deck patching is almost always caused by corrosion of the reinforcement. Patching procedure using bridge floor slab patching concrete 7. Full depth rigid pavement slab repair detail section 88. 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. The overlays were bonded to the old deck concrete by portland cement grout. The shear connector devices can be rolled in embossments, lugs, holes or wires welded to the panels. The minimum amount of reinforcement in each direction shall be 0. 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. M400ar is specially designed for hot weather bridge deck applications and where heavy equipment will be driven on the.
Concrete bridge decks do not need expansion joints wood. The work shall be done according to the applicable. The next part of the sheet number is a two letter id which is used to group sheets with a similiar theme ex. Proper patch detail excavate around bars especially when chlorides are present. There are three imperatives for repairing cracked bridge decks. How to repair concrete slab core holes with the adm core. Masteremaco t 545 quickset concrete roadway patching mortar. The bond breaker allows the patch and the old concrete to move independently. Damage in the top of the deck only not progressing full depth is. 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.
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. Aci 345r11 guide for concrete highway bridge deck construction. Specification requirements 1 specify on the plans if cement type other than type i or type ii will be used. Concrete bridge detail concrete bridge detail dwg file,concrete bridge detail download.
We are dedicated to be the best cad resource for architects,interior designer and landscape designers. Distribute the concrete evenly to avoid the need of excessive shoveling. The primary use of this section is to address unanticipated localized bridge deck damage that typically must be repaired quickly. Li, in advanced composites in bridge construction and repair, 2014. Concrete deck slab details the following detailing practice is intended to minimize the bridge deck cracking in both transverse and longitudinal directions. 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.
Aci 345r11 guide for concrete highway bridge deck construction author. These are often referred to as alligator cracks or spider webs. M400ar is a 70 mil, internally reinforced sheet waterproofing membrane with a built in white reflective topping. Each bridge standard details sheet has been prepared by a technical owner, who is a registered civil engineer in the state of california. The bridge deck is the roadway portion of a bridge, including shoulders. January 25, 2019 purpose this manual includes stepbystep repair procedures for use on new and existing concrete members cast. This section covers bridge deck repairs over relatively small areas.
In bridgedeck overlay repairs, premature reflective cracking is often the ultimate failure mode that limits repair service life. Concrete repair technical drawing concrete repair patch edge treatment dxf technical drawing concrete repair patch edge treatment. 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. This is a bridge deck patching concrete with a micro silica overlay. Deck patching involves sounding and marking areas of concrete. Standard sheets are available both in the us customary units accessible below and in metric units. 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. Methods for removing concrete decks from steel girder bridges. Bd sheets are intended to show how the typical parts that make up a bridge are to be detailed. 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 cad drawings are available to purchase and download immediately. Jan, 2014 the adm core hole repair kit available online at. 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.
This concrete repair and anchoring material uses a chemical action for quick curing. An elastomeric concrete nosing material, emcrete is flexible, durable, impact resistant. Graduate theses and dissertations iowa state university capstones, theses and dissertations 2014 methods for removing concrete decks from steel girder bridges. Ultrahigh performance concrete composite connections for. 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. The deck may be cracked through the entire depth of the concrete slab or cracked only in the unbonded concrete overlay.
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