Concrete crack and partial depth spall repair manual

Downloads concrete pavement repair cpr acpa current. Won texas tech university project number 05549 product number 05549p1 performed in cooperation with the texas department of transportation and the federal highway administration texas tech university. Repair spalling and partialdepth failures in concrete pavement. This paper discusses the results of a comprehensive field investigation to determine the mechanism of spalling observed in bridge structures containing partial depth. The problem with these products is they can be brittle and can crack under direct heavy impact or because they have a different coefficient of expansion than the surrounding concrete. Partial depth repair restores localized surface distress in the upper third to half of a concrete slab due to distresses such as joint or crack spalling. Field investigation of spalling in partialdepth precast. This guide to concrete repair results from recognition of that need. Factors for pavement rehabilitation strategy selection. In this video we show you how to repair small and large cracks using our spall fx and tx concrete repair products. Evaluation and selection guide of method of repair for routine.

Concrete crack and partialdepth spall repair manual. Concrete crack and partial depth spall repair index. Repair manual for concrete bridge elements page 3 concrete. Npca quality control manual for precast concrete plants, 12th edition. Asphalt and concrete pavement maintenance and repair. Each is a compendium of good practices for portland cement concrete pcc joint resealing and partial depth spall repair, respectively, stemming from two strategic highway. For crack repair use an angle grinder to create a vgroove along the entire length of the crack. This guide first discusses reclamations methodology for concrete.

Spalling can occur when unsealed joints or cracks are filled with incompressible materials that prevent movement of the slab in hot weather and result in breakage of the concrete. Partial depth repair is typically used to repair spalling either at pavement joints or at mid slab locations. Largescale deck repair or replacement work should typically include projectspecific plans and be in accordance with item 422, concrete superstructures. Partial depth patches are acceptable for most surface problems at joints, cracks, and midslab locations that are within the upper onethird of the slab. The strategic highway research program shrp h106 maintenance experiment and the federal highway administration fhwa longterm monitoring ltm of pavement maintenance materials test sites project studied the repair of partial depth spalls in concrete. During the repair, deteriorated concrete is removed and replaced in the top half of the slab.

Field guide to concrete repair application procedures aci fall 2011 convention october 16 20, cincinnati, oh aci web sessions. When the spalling damage is shallower than of the concrete s thickness, the concrete usually can receive a surface repair. The depth of deterioration can vary from a few millimeters to the full depth of the pavement. Guide for partialdepth repair of concrete pavements institute for. Spall repair materials alternative repair materials. Section 3 major spall repair and concrete replacement. During fire suppression, water quenching exacerbates thermal shock resulting in microcracking and strength loss. The purpose of the guide for partialdepth repair of concrete pave ments is to provide. Concrete crack and partial depth spall repair manual. The primary use of this section is to address unanticipated localized bridge deck damage that typically must be. Army corps engineers, evaluation and repair of concrete. Often, cementitious or other rigid partial depth repair products are used to repair spalls in concrete pavements. Webinar, txdot proper design and implementation of concrete repairs. Chapter 5 surface treatments and pavements 501 cement concrete pavement rehabilitation.

If the problem is limited in depth, then a partial depth patch may be appropriate, otherwise a full depth patch is recommended. This section covers bridge deck repairs over relatively small areas. The report recognizes that such cracks do not grow once the beam is installed in a bridge. Partial depth repair of concrete pavements in wisconsin. Partial depth repair pdr is a concrete pavement rehabilitation method used to address surface spalling and top. It replaces small, deteriorated areas with suitable repair materials. Class a partial depth pavement repair is used when the concrete pavement is structurally sound, but has spalling or localized surface delamination at joints, cracks, edges or interior areas.

Full depth rigid pavement slab repair detail section 88. Spalls caused by misaligned dowel bars or dcracking should. Partialdepth repair of concrete pavement federal highway administration 1994 video vh273b this video demonstrates repair of spalls at joints and midsections of concrete pavements. Pdr is commonly used to repair lowseverity spalling within 6 of the joint and less than 2 deep, but can also be used for lowseverity scaling. Use of the ed material apart from this ufc must have the permission of the holder. Joint and crack sealing and repair for concrete pavements. All exposed surfaces and cracks in the slot must be sand blasted to a clean concrete surface. Concrete crack and partialdepth spall repair manual for airfields jp003p.

The chemistry of concrete at various temperatures is described below. At hitech systems we carry a variety of products for joint filling, polyurea. Ufc 327003 concrete crack and partialdepth spall repair. Proposed evaluation and repair procedures for precast. The resulting bursting pressure causes spalling at the hot surface. Field guide to concrete repair application procedures. Ufc 327003 concrete crack and partialdepth spall repair wbdg. Partialdepth repairs that abut working joint or cracks require a compressible insert. Concrete crack and partialdepth spall repair manual, jp003p, american concrete pavement association, skokie, il, 2003.

Concrete repair national precast concrete association. Standard specification references to the concrete repair manual 4. The insert also makes a uniform face that is helpful when resealing the joint or crack. Partial depth repairs are defined as the removal and replacement of small areas of. This manual of practice is an updated version of the 1993 shrp spall repair manual. If the damage is greater than of the depth, steel bars may need to be installed and a full depth restoration may be required. The most common problem is spalling, but partial depth repair can also be used for small areas with severe scaling. This handbook contains information on current practices as of september 1998 for the repair of cracks and spalls in concrete pavements as well as on the.

Corroded rebar, due to exposure, must be cleaned at the beginning of the restoration process. The 2volume concrete repair manual is a must have for those involved in the repair of concrete. Concrete institutes aci manual of concrete practice, part 2 aci 224r016 as guidelines for whether to inject cracks with epoxy. Crack and partialdepth spall repair manual american concrete pavement association a m e r i c a n c o n c r e t e p a v e m e nt as s o c i a t i o n jp003p. Spalled concrete repair details structural engineering. Type b2d and b2e repairs include removal to the bottom of the pavement if necessary. On the contrary, the cracks will close to some extent due to dead and live. There are no unit price adjustments for an increase and decrease in spall repair quantity. Rigid pavement patches are used to treat localized slab problems such as spalling, scaling e. Repair manual for best spall repairs in concrete pavements.

Concrete crack and partialdepth spall repair edited and annotated by the. Partialdepth bridge deck repairs are typically performed on fulldepth castinplace bridge decks. Repairing concrete runways concrete construction magazine. Concrete crack and partialdepth spall repair edited and annotated by the american concrete. Team henry shall provide all materials, labor, equipment, and transportation to design, repave, and replace daaf pavement surfaces in accordance unified facilities criteria ufc 327003, concrete crack and partial depth spall repair, unified facilities guide specificationsufgs 321215, hotmix asphalt for airfields, army regulation 4201, army.

Concrete crack repair using our spall fx and tx products. Citeseerx document details isaac councill, lee giles, pradeep teregowda. Icri international concrete repair institute nace international formerly the national association of corrosion engineers pti posttensioning institute sspc the society for protective coatings usace united states army corps of engineers. Shrp h 349 concrete pavement repair manuals of practice, materials and procedures for the repair of joint seals. Use of the ed material apart from this ufc must have the permission of the. H the crack is spalled at high severity, the corner piece has broken into two or more pieces, or. Im looking for a source for generic spalled concrete repair details. Any ed material included in this ufc is identified at its point of use. The compressible insert reforms the joint or crack and keeps the new repair from bearing on the adjacent concrete. Slab stabilization guidelines for concrete pavements. For spall repair, payment is measured by the authorized saw cut area. At a former firm i remember a reference manual that had some isometric drawings showing how to remove the concrete around the corroded bar and how to clean the bar up and patch it. This book contains two pavement maintenance manuals intended for use by highway maintenance agencies and contracted maintenance firms in the field and in the office.

Materials and procedures for rapid repair of partialdepth. This handbook contains information on current practices as of september 1998 for the repair of cracks and spalls in concrete pavements as well. Guidelines for partial depth repair in continuously. Guidelines for partial depth repair in continuously reinforced concrete pavement by jungheum yeon seongcheol choi soojun ha moon c. For sealing concrete pavement joints, measure the actual length of joints installed for sealreplace concrete. Concrete pavement preservation the national center for. Implementing best concrete pavement spall repairs center for. It is designed to serve as a companion document to the standard specifications for repair of concrete included in appendix a of this guide. Partial depth repair restores localized surface distresses of concrete pavement within the upper onethird of the slab.