Performance of grouts for post-tensioned bridge structures
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U.S. Dept. of Transportation, Federal Highway Administration, Research and Development, Turner-Fairbank Highway Research Center, National Technical Information Service, distributor , McLean, Va, [Springfield, VA
Grouting., Bridges, Concrete -- Design and construc
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Get this from a library. Performance of grouts for post-tensioned bridge structures. [Alireza Ghorbanpoor; S C Madathanapalli; United States. Federal Highway Administration.; University of Wisconsin--Milwaukee. Department of Civil Engineering and Mechanics.]. Get this from a library. Performance of grouts for post-tensioned bridge structures.
[Turner-Fairbank Highway Research Center.;]. for PT grouts, not for constituent materials of those grouts. Consequently, this issue went undetected for many years with very limited chloride level data being captured for PT grouts.
The PTI M Specification for Grouting of Post-Tensioned Structures has since added requirements for frequent chloride testing during Size: 1MB. IMPROVED GROUTS FOR BONDED TENDONS IN POST-TENSIONED BRIDGE STRUCTURES.
FINAL REPORT. Currently, there is a serious problem in the United States and elsewhere with the deterioration of concrete bridges due to corrosion induced by chloride intrusion into the concrete. Nonetheless, as a specialist in the design and construction of post-tensioned concrete building structures for 50 years I feel qualified to submit a review.
Details Performance of grouts for post-tensioned bridge structures EPUB
I will keep it as objective as I can:). This book is destined to become the definitive work on the design of post-tensioned concrete buildings for many decades to /5(11).
• Prior to PT tendon grouts were a mixture of water & cement (w/c. Unfortunately, this book can't be printed from the OpenBook. Visit to get more information about this book, to buy it in print, or to download it as a free PDF.
This study was part of the Long-Term Bridge Performance Program. Abstract: A significant proportion of the U.S. bridge inventory is based on bonded post-tensioned (PT) concrete construction. An important aspect of maintaining corrosion protection of these PT systems is assuring that tendon ducts are properly grouted with an acceptable material.
− Research ReportState of the Art Durability of Post-Tensioned Bridge Substructures, October − Research ReportDevelopment of High-Performance Grouts for Bonded Post-Tensioned Structures, October − Research ReportLong-Term Post-Tensioned Beam and Column Exposure Test Specimens: Experimental.
The PTI Convention each spring contains a series of technical sessions including research updates, state-of-the-art use of post-tensioning, and fascinating case studies.
The following is a list of confirmed speakers/topics for the PTI Convention: Monday, Septem "In-Service PT Tendon Assessment Technologies": Speakers to be confirmed shortly.
engg. and appl. sci. 34 no. 2 uly - december issn cost and performance optimization of precast post tensioned pre-stressed girder bridge superstructures. Post-tensioned concrete haunched slabs standards will extend the span range capabilities of the shallow-depth slabs from 20 m (66 ft) to 28 m (92 ft), in addition to providing a high performance type bridge superstructure.
General Design. The slab bottom (soffit) has a parabolic profile with minimum depth at mid-span and maximum depth at pier. Members of the Institute include major post-tensioning material fabricators in the U.S., Canada and Mexico, and manufacturers of prestressing materials in the U.S., Canada, Mexico, Asia and Europe, and companies supplying materials, services and equipment used in post-tensioned construction.
Management of bridge assets requires a life-cycle approach that balances design and construction of new bridges, and maintenance of existing bridge stock. There has been a growing need for inspection, maintenance, repair, and strengthening of existing bridge structures due to aging transportation infrastructure.
Specification for Grouting of Post-Tensioned Structures [ACI] on *FREE* shipping on qualifying offers. Specification for Grouting of Post-Tensioned StructuresAuthor: ACI.
A comprehensive study concerning grouts for bonded post-tensioning included fluidity testing, accelerated corrosion testing, and field testing in a large-scale clear parabolic duct. Preliminary durability design guidelines were developed for durability design of post-tensioned bridge by: 4.
In order to simulate a realistic geometry, reinforcement details, and accessibility conditions, a full-scale post-tensioned U-girder specimen, m long, m wide, and m deep was constructed by Hurlebaus et al.
.To evaluate the effectiveness of the various NDE techniques in detecting grout defects in the internal tendons, several parameters such as tendon diameter, concrete cover Cited by: 3. Evaluation of post-tensioned concrete bridge structures by the impact-echo technique [microform] U.S.
Dept. of Transportation, Federal Highway Administration ; National Technical Information Service, distributor McLean, Va.: [Springfield, VA Australian/Harvard Citation. Ghorbanpoor, Alireza. & United States. Federal Highway Administration. Table 3 sets a structure classification based on the bridge’s redundancy and ductility.
The bridge’s redundancy is quantified by its load rating system factors (Øs). Appendix B includes two tables that provide information on determining system factors for post-tensioned multi-girder and box structures.
Development of High Performance Grouts for Bonded Post-tensioned Structures. Published Date: Language: The purpose of the research is to develop a high performance grout for post-tensioning tendon injection.
State-of-the-Art Report About Durability of Post-Tensioned Bridge Substructures Published Date: Cited by: It is intended for use in a wide variety of structure types, including bridges, containment structures and buildings.
The edition includes significant updates include chloride testing, inclined tube testing, material certification requirements, prohibition of tendon. See â Volume 4 of Design and Construction Inspection of Precast Concrete Spliced I-Girder Bridges.â (September ) 34 pp.
â Sunshine Skyway Bridge Post-Tensioned Tendons Investiga- tionâ Parts 1 and 2,â Florida Department of Transportation, District 7 Structures and Facilities, Tampa, FL, February Durable Post-Tensioned Concrete Structures TR72 Concrete Bridge Development Group July Gordon ClarkGordon Clark • More UK research and development especially on grouts • Fib work started in Fib work started in Swiss survey Poor performance Good performance Photograph courtesy VSL Page Standard Bleed Tests File Size: 3MB.
Description Performance of grouts for post-tensioned bridge structures EPUB
grouting of tendons in prestressed concrete Download grouting of tendons in prestressed concrete or read online books in PDF, EPUB, Tuebl, and Mobi Format.
Click Download or Read Online button to get grouting of tendons in prestressed concrete book now. This site is like a library, Use search box in the widget to get ebook that you want. Segmental precast post-tensioned bridge piers are one of the latest options for accelerated bridge construction.
However, their application in seismic zones is limited due to the low energy dissipation observed in such piers and a lack of : Mehrshad Amini, Masoud Mirtaheri, Amir Peyman Zandi.
Concrete, grouts, and filler material. PTI MSpecification for Grouting of Post-Tensioned Structures (PTI M) Post-Tensioning Institute, Farmington Hills, MI () Post-Tensioned Concrete Bridge Construction, vol.
2, Technical Report to Texas Department of Transportation (September ) Cited by: 3. – Post-tensioned segmental constructed structures can be vulnerable at their construction joints – During periods of high construction boom it is, unfortunately, a fact that workmanship and supervision qualities fall (50% of HK’s Bridge stock has been constructed over the last 10 years)File Size: 2MB.
Segmental post-tensioned (PT) bridges are major structures that carry significant traffic. Recent investigations of these bridges have identified voids in their ducts. and some of these exposed strands at these void locations are undergoing corrosion.
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The corrosion. performance of structures comprising grouted post-tensioned tendons. It was also determined that many conflicts existed when omitting other aspects of the fib document i.e. the grouts that may be able to be designed to achieve the low bleed may not be able to be pumped by the same equipment.
A wider understanding of the changes to grouting. Effect of Voids in Grouted, Post-Tensioned Concrete Bridge Construction: Volume 1 – Electrochemical Testing and Reliability Assessment. Post-tensioned (PT) bridges are major structures that carry significant traffic.
PT bridges are economical for spanning long distances. In Texas, there are several signature PT bridges. General Overview of Post-Tensioned Concrete Design Instructor: D.
Matthew Stuart, P.E., S.E., SECB, MgtEng In continuous or indeterminate post-tensioned structures the moments due to the prestressing The structural adequacy and performance File Size: 1MB.The grouting of tendons tensioned to 80, psi or more is a demanding job that requires special skills and materials.
Grouts to be pumped into tendon ducts must have special characteristics to match the particular needs of this application. Each of these characteristics is important to the successful performance of the grout.Post-Tensioned Concrete Haunched Slab Bridge User’s Manual KDOT Bridge Section Page 4 Ver 2.
The need for improved safety under overpass structures by minimizing the number of piers and maximizing horizontal clearance (in comparison to RCSH). 3.
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