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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.
Book Synopsis Transfer, Development, and Splice Length for Strand/reinforcement in High-strength Concrete by : Julio A. Ramirez
Download or read book Transfer, Development, and Splice Length for Strand/reinforcement in High-strength Concrete written by Julio A. Ramirez and published by Transportation Research Board. This book was released on 2008 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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.
Download or read book NCHRP Report 603 written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
"Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration."
Book Synopsis Application of LRFD Bridge Design Specifications to High-strength Structural Concrete by : Neil Middleton Hawkins
Download or read book Application of LRFD Bridge Design Specifications to High-strength Structural Concrete written by Neil Middleton Hawkins and published by Transportation Research Board. This book was released on 2007 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration."
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.
Book Synopsis Acceptance Tests for Surface Characteristics of Steel Strands in Prestressed Concrete by : A. E. N. Osborn
Download or read book Acceptance Tests for Surface Characteristics of Steel Strands in Prestressed Concrete written by A. E. N. Osborn and published by Transportation Research Board. This book was released on 2008 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
"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.
Book Synopsis High-performance/high-strength Lightweight Concrete for Bridge Girders and Decks by : Thomas E. Cousins
Download or read book High-performance/high-strength Lightweight Concrete for Bridge Girders and Decks written by Thomas E. Cousins and published by Transportation Research Board National Research. This book was released on 2013 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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.
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.
Book Synopsis Design of Concrete Structures Using High-strength Steel Reinforcement by : Bahram M. Shahrooz
Download or read book Design of Concrete Structures Using High-strength Steel Reinforcement written by Bahram M. Shahrooz and published by Transportation Research Board. This book was released on 2011 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
The objective of this research was to determine the lap splice length of untensioned prestressing strand in field-cast ultrahigh performance concrete (UHPC).
Book Synopsis Splice Length of Prestressing Strand in Field-cast Ultra-high Performance Concrete Connections by :
Download or read book Splice Length of Prestressing Strand in Field-cast Ultra-high Performance Concrete Connections written by and published by . This book was released on 2014 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research was to determine the lap splice length of untensioned prestressing strand in field-cast ultrahigh performance concrete (UHPC).
Book Synopsis Department of Transportation and Related Agencies Appropriations for 2002 by : United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations
Download or read book Department of Transportation and Related Agencies Appropriations for 2002 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations and published by . This book was released on 2001 with total page 1812 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Progress Report by : National Cooperative Highway Research Program
Download or read book Progress Report written by National Cooperative Highway Research Program and published by . This book was released on 2002 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
This study examines the transfer and development length of 15.2 mm (0.6 in.) diameter prestressing strand in high performance (high strength) concrete. Two 1067 mm (42.0 in.) deep rectangular beams, commonly called the Hoblitzell-Buckner beams, each with one row of 15.2 mm (0.6 in.) diameter strands at 51 mm (2 in.) spacing on center, were instrumented to measure the transfer and development length of the strands. Concrete strengths were 48.5 MPa (7040 psi) at transfer and 90.7 MPa (13,160 psi) at the time of development length testing. The strand surface condition was weathered or rusty. Transfer length was determined from the concrete strain profile at the level of the strands at transfer.
Book Synopsis Transfer and Development Length of 15.2 Mm (0.6 In.) Diameter Prestressing Strand in High Performance Concrete by : Shawn P. Gross
Download or read book Transfer and Development Length of 15.2 Mm (0.6 In.) Diameter Prestressing Strand in High Performance Concrete written by Shawn P. Gross and published by . This book was released on 1995 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examines the transfer and development length of 15.2 mm (0.6 in.) diameter prestressing strand in high performance (high strength) concrete. Two 1067 mm (42.0 in.) deep rectangular beams, commonly called the Hoblitzell-Buckner beams, each with one row of 15.2 mm (0.6 in.) diameter strands at 51 mm (2 in.) spacing on center, were instrumented to measure the transfer and development length of the strands. Concrete strengths were 48.5 MPa (7040 psi) at transfer and 90.7 MPa (13,160 psi) at the time of development length testing. The strand surface condition was weathered or rusty. Transfer length was determined from the concrete strain profile at the level of the strands at transfer.
