Transfer, Development, and Splice Length for Strand/reinforcement in High-strength Concrete

Transfer, Development, and Splice Length for Strand/reinforcement in High-strength Concrete PDF

Author: Julio A. Ramirez

Publisher: Transportation Research Board

Published: 2008

Total Pages: 131

ISBN-13: 030911747X

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"This report documents research performed to develop recommended revisions to the AASHTO LRFD Bridge Design Specifications to extend the applicability of the transfer, development, and splice length provisions for prestressed and non-prestressed concrete members to concrete strengths greater than 10 ksi. The report details the research performed and includes recommended revisions to the AASHTO LRFD Bridge Design Specifications. The material in this report will be of immediate interest to bridge designers."--Foreword.

Acceptance Tests for Surface Characteristics of Steel Strands in Prestressed Concrete

Acceptance Tests for Surface Characteristics of Steel Strands in Prestressed Concrete PDF

Author: A. E. N. Osborn

Publisher: Transportation Research Board

Published: 2008

Total Pages: 141

ISBN-13: 0309117615

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This report provides practical tests to identify and measure residues (e.g., rust, lubricants used in manufacturing processes, or corrosion inhibitors) on the surface of steel prestressing strands and to establish thresholds for residue types found to affect the strength of the strand's bond to concrete. Key products presented here are four test methods suitable for use in a quality assurance program for the manufacture of steel prestressing strand.

High-performance/high-strength Lightweight Concrete for Bridge Girders and Decks

High-performance/high-strength Lightweight Concrete for Bridge Girders and Decks PDF

Author: Thomas E. Cousins

Publisher: Transportation Research Board National Research

Published: 2013

Total Pages: 100

ISBN-13: 9780309258883

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"TRB's National Cooperative Highway Research Program (NCHRP) Report 733: High-Performance/High-Strength Lightweight Concrete for Bridge Girders and Decks presents proposed changes to the American Association of State Highway and Transportation Officials' Load and Resistance Factor Design (LRFD) bridge design and construction specifications to address the use of lightweight concrete in bridge girders and decks. The proposed specifications are designed to help highway agencies evaluate between comparable designs of lightweight and normal weight concrete bridge elements so that an agency's ultimate selection will yield the greatest economic benefit. The attachments contained in the research agency's final report provide elaborations and detail on several aspects of the research. Attachments A and B provide proposed changes to AASHTO LRFD bridge design and bridge construction specifications, respectively; these are included in the print and PDF version of the report. Attachments C through R are available for download below. Attachments C, D, and E contain a detailed literature review, survey results, and a literature summary and the approved work plan, respectively. Attachment C; Attachment D ; Attachment E; Attachments F through M provide details of the experimental program that were not able to be included in the body of this report. Attachment F; Attachment G; Attachment H; Attachment I; Attachment J; Attachment K; Attachment L; Attachment M. Attachments N through Q present design examples of bridges containing lightweight concrete and details of the parametric study. Attachment N; Attachment O; Attachment P; Attachment Q. Attachment R is a detailed reference list."--Publication information.

Design of Concrete Structures Using High-strength Steel Reinforcement

Design of Concrete Structures Using High-strength Steel Reinforcement PDF

Author: Bahram M. Shahrooz

Publisher: Transportation Research Board

Published: 2011

Total Pages: 83

ISBN-13: 030915541X

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TRB's National Cooperative Highway Research Program (NCHRP) Report 679: Design of Concrete Structures Using High-Strength Steel Reinforcement evaluates the existing American Association of State Highway and Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) Bridge Design Specifications relevant to the use of high-strength reinforcing steel and other grades of reinforcing steel having no discernible yield plateau. The report also includes recommended language to the AASHTO LRFD Bridge Design Specifications that will permit the use of high-strength reinforcing steel with specified yield strengths not greater than 100 ksi. The Appendixes to NCHRP Report 679 were published online.

Code Requirements for Environmental Engineering Concrete Structures (ACI 350-01) and Commentary (ACI 350R-01)

Code Requirements for Environmental Engineering Concrete Structures (ACI 350-01) and Commentary (ACI 350R-01) PDF

Author: ACI Committee 350

Publisher: American Concrete Institute

Published: 2001

Total Pages: 393

ISBN-13: 0870310682

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Standards for tests and materials - Durability requirements - Concrete quality, mixing, and placing - Formwork, embedded pipes, and construction and movement joints - Details of reinforcement - Analysis and design general considerations - Strength and serviceability requirements - Flexure and axial loads - Shear and torsion - Development and splices of reinforcement - Two-way slab systems - Walls - Footings - Precast concrete - Composite concrete flexural members - Prestressed concrete - Shells and folded plate members - Strength evaluation of existing structures - Special provisions for seismic design - Structural plain concrete.