Repair of concrete in highway bridges a practical guide trl. Repair and strengthening of reinforced concrete structures. The outcome of the last pac meeting was that the following three repair methods should be investigated. Needs for maintenance and refurbishment of bridges in. Replace selected bridge timbers concrete patch repair pier and south abutment rebuild deteriorated corner of pier which is beginning to undermine bearing pedestal the estimated construction cost for. Pdf damage investigation, strengthening, and repair of jilin. In design process we must take two important points in considerations. Recommended guide specification for the design of externally. The reinforcing steel should then be cleaned of all rust and scale, and the concrete replaced.
Accordingly, there is great need to improve the materials and techniques used in repair and strengthening. Composite bridges refer to concretesteel composite bridges. Chapter 1 the wisconsin department of transportations field manual for bridge element inspection 9 chapter 1. Report on techniques for bridge strengthening, one task performed under project award. Concrete, steel and timber members all require distinct repair methods which not only address the true cause of the deterioration, but also protect the members from future damage. Strutandtie modeling stm for concrete structures, design examples. Justin dahlberg brent phares wayne klaiber bridge engineering center and national center for wood transportation structures iowa state university. Sika solutions for the refurbishment of concrete bridges sika uk. Bridge strengthening with epoxy bonded steel plates.
I75 bridge over the rouge river in detroit, mi the substructure consists of slag aggregate concrete cfrp used for confinement after the repairs to increase durability of the repair for 30 to 40 years. First published in 2002 then revised in 2003, 2004 and 2006. This stateoftheart reference meets this need by providing a toolkit approach to repairing and strengthening concrete and composite bridges. A brief introduction to issues related concrete bridge repair is given in section 1 and the causes of. Evaluation of appropriate maintenance, repair and rehabilitation methods for iowa bridges april 2003 sponsored by the iowa department of transportation highway division and the iowa highway. As the injection material is used commonly flexible epoxy resin. It was discovered that the majority of concrete bridges require repair within.
Pdf jilin highway concrete bridge is located in the center of jilin city, which is positioned in the middle and southern part in jilin province in. Assuring bridge safety and serviceability in europe august 2010 manuals. Pdf repair and strengthening of reinforced concrete structures. Repair, protection and strengthening simpson strongtie. Cfrp applied using wet layup beam shear strengthening i696 plaza structures in southfield, mi side by side box beams developed diagonal. Structural strengthening is the process of upgrading structures to improve performance under existing loads or to increase the strength of structural members to carry additional loads. Wayne klaiber, and kenneth dunker epoxybonded steel plates have been used to strengthen or repair concrete bridges. In many cases repair and strengthening of concrete structures must be performed only a few years after their. Sika solutions for the refurbishment of concrete bridges. The flowchart in figure a outlines the repair process and the relevant rms maintenance specifications. Bridge strengthening with epoxy bonded steel plates donita k.
Recommended guide specification for the design of externally bonded frp systems for repair and strengthening of concrete bridge elements examines a recommended guide specification for the design of externally bonded fiberreinforced polymer frp systems for the repair and strengthening of concrete bridge elements. Replace selected bridge timbers concrete patch repair pier and south abutment rebuild deteriorated corner of pier which is beginning to undermine bearing pedestal the estimated construction cost for the strengthening and repair recommendations above is. This article focuses on novel highperformance fibrereinforced cement basedcomposites hpfrccs for strengthening and repair of buildings and infrastructure made of concrete and, in some cases, masonry. Repairing concrete solutions to reestablish structural integrity repairing concrete 66 solutions to reestablish structural integrity 7 overview repair and protection of concrete concrete repair strategies. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development. Electrically isolated posttensioning tendons for more durable bridgesoctober, 2019. Bridge rehabilitation world scientific publishing company.
Recommended guide specification for the design of externally bonded frp systems for repair and strengthening of. Generally, the cost for strengthening and repair of bridge structures can be divided into. Advancing steel and concrete bridge technology to improve infrastructure. Repair of damaged prestressed concrete bridges using cfrp. Repair and strengthening of bridge substructures epublications. The goal of this report is to underline the need for strengthening and repair of bridges in europe by. In the last two decades, the rapid deterioration of bridge structures has become a serious technical and economical problem in many countries, including highly developed ones. Introduction to repair and strengthening of reinforced concrete structures 1.
Strengthening techniques include concrete jacketing, steel. Repair of concrete in highway bridges a practical guide. Structural strengthening for project owners bridge structures aucklands iconic grafton bridge, was the worlds largest single span reinforced concrete arch bridge when originally. Widely appear in strengthening of bridge structures. Bridge rehabilitation and strengthening manual part1 method. Inspection, repair, strengthening, testing and load capacity evaluation raina, v. Attachment a recommended guide specification for the design of bonded frp systems for repair and strengthening of concrete bridge elements unfortunately, this book cant be printed from the openbook. The concrete repair, protection and strengthening solutions developed by simpson strongtie are the result of over 40 years of laboratory.
The bs en1504 series represents an opportunity to further improve concrete repair practice in the continent and present a challenge to the industry as it adapts to the new standards. Structural repair techniques include crack injection with low viscosity epoxy and patch repair using an approved material such as polymer modified mortar. The guide includes all aspects of concrete bridge repair, starting with the concrete deterioration mechanism and the inspection of bridges through to carrying out remedial work and monitoring the repairs. Interestingly, methods used to strengthen, repair, and retrofit often are interrelated, and thus a strict distinction between these options is at best academic. The flowchart in figure a outlines the repair process and the relevant. Attachment a recommended guide specification for the design. Trbs national cooperative highway research program nchrp report 655. Today it is recognized as one of the 100 most significant concrete structures in the world. Basic concrete patch repair with reinforcement corrosion 58 figure 33.
Cover depth measurementsfor a reinforcedconcrete bridge component 26. Effective structural concrete repair volume3of3 evaluation of repair materials for use in patching damaged concrete. Novel cementbased composites for the strengthening and. If the bridge will carry traffic during repairs, restrict vehicles away from repair area as much as possible. Repair and protection systems for concrete and masonry. Strengthening and preserving concrete bridges using frp. Download a pdf of recommended guide specification for the design of externally bonded frp systems for repair and strengthening of concrete bridge elements by the national academies of sciences, engineering, and medicine for free. Because most of the information pertaining to this subject bas. Covering a wide range of structural elements and related defects, this collection of twenty concrete bridge strengthening and repair case studies showcases solutions to real problems encountered in the field and the processes by which those solutions were developed. Vision 2020a vision for the concrete repair, protection, and strengthening industry. It has continued its history of innovation, by using. Concrete, steel and timber members all require distinct repair methods which not. Underpinning is a method for repair and strengthening of building foundations. Concrete repair manual 14 txdot 012019 chapter 1 introduction section 2 using the concrete repair manual section 2 using the concrete repair manual when developing repair or rehabi litation plans, the engineer shoul d specifically include which sections of this manual will be enforced.
A guide to concrete repair the standards apply across the 25 member states of the eu as well as switzerland, norway, and iceland. Concrete bridge strengthening and repair covering a wide range of structural elements and related defects, this collection of twenty concrete bridge strengthening and repair case studies showcases solutions to real problems encountered in the field and the processes by which those solutions were developed. Repair and strengthening of masonry arches network rails. Remove deteriorated concrete to horizontal and vertical planes using pneumatic breakers. If you need to print pages from this book, we recommend downloading it as a pdf. By testing damaged reinforced concrete beams that had been repaired and wedge cylinder samples, it was determined that the most important properties for durable concrete repair are modulus of elasticity and bond strength. Wayne klaiber, and kenneth dunker epoxybonded steel plates have been used to strengthen or repair concrete bridges in many countries around the world. The basic repair methods for concrete element are crack repair and restoration.
Strengthening and repair of reinforced concrete structures using composite material conference paper pdf available june 2009 with 812 reads how we measure reads. Overlays may also be placed to strengthen or improve the drainage on the deck. Basics of concrete repair and structural strengthening. Pdf strengthening and repair of reinforced concrete. Minnesota department of transportation research services. Repair and strengthening of reinforced concrete structures using cfrp plates. Needs for maintenance and refurbishment of bridges in urban. Download a pdf of recommended guide specification for the design of externally bonded frp systems for repair and strengthening of concrete bridge elements by the national academies of sciences. Evaluation of appropriate maintenance, repair and rehabilitation methods for iowa bridges april 2003 sponsored by the iowa department of transportation highway division and the iowa highway research board iowa dot project tr 429 final department of civil and construction engineering. The wisconsin department of transportations field manual for bridge element inspection this manual is designed to aid bridge inspectors in performing accurate and consistent bridge inspections and was developed for convenient. In later meetings, the research team proposed some potential solutions to the problems previously noted. Concrete pile repair deteriorated concrete in a concrete pile should be removed to sound concrete. Data from these tests verified that cfrp is an effective method for repairing strengthening damaged pc girder bridges.
Underpinning methods, procedures and their applications of is discussed. The principal commences the repair process by organising and carrying out a preliminary assessment. Underpinning methods, procedure and applications in foundation strengthening. Concrete bridge repairs construction rms concrete bridge repairs guidelines. Repair of deteriorated bridge substructures d egradation of bridge substructure members in wisconsin is a serious concern. The guide includes all aspects of concrete bridge repair, starting with the concrete deterioration mechanism and the inspection of bridges through to carrying out remedial work and monitoring the. Previously, this document was titled vicroads bridge maintenance repair and strengthening guidelines. Novel cementbased composites for the strengthening and repair of concrete structures. Saw cut around concrete to be removed and avoid cutting reinforcing steel. Concrete cap repair problems often found in concrete bridge seats include the deterioration of concrete and. 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. Structural repair techniques include crack injection with low viscosity epoxy and patch repair using an approved material such as polymer modified mortar or nonshrink grout.
A relevant presumption is that usually strengthening is not an emergency repair but a planned decision to upgrade the bridge to a particular level of service. The wisconsin department of transportations field manual for bridge element inspection. Repair of bridges using fiber reinforced polymers frp 1 projecte o tesina despecialitat. Therefore, the contractor and design team developed a costeffective strengthening strategy that only required. Concrete repair manual 14 txdot 012019 chapter 1 introduction section 2 using the concrete repair manual section 2 using the concrete repair manual when developing repair or rehabi litation. Results in an increase in the strength of the concrete and in the maximum compressive strain aci committee 440, guide for the design and construct passive confinement ion of externally bonded frp systems for strengthening concrete structures, aci 440. Covering a wide range of structural elements and related defects, this collection of twenty concrete bridge strengthening and repair case studies showcases solutions to real problems encountered in the. If a repair strategy required only removing and replacing the concrete deck in one span, a significant cost savings would be realized since the entire deck did not need to be replaced. Given the age and condition of some of our nations bridges, the need for a practical guide to bridge management and maintenance has never been greater. Structural strengthening for project owners bridge structures aucklands iconic grafton bridge, was the worlds largest single span reinforced concrete arch bridge when originally built in 1910.
Sika can provide bridge maintenance contractors and their customers with the appropriate solution for all types of bridge refurbishment and maintenance works. Management of bridges for strengthening and repair chalmers. Basics of concrete repair and structural strengthening paul russell product manager concrete repair. Repair of bridges using fiber reinforcement polymers frp.
Concrete bridge strengthening and repair ice virtual library. The goal of this report is to underline the need for strengthening and repair of bridges in europe by presenting a general view of the condition of european bridges and what bridge. This report provides a summary of the findings of task 6. The 2volume concrete repair manual is a must have for those involved in the repair of concrete.
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