Synthesis and Evaluation of Lightweight Concrete Research Relevant to the American Association of State Highway and Transportation Officials Load and Resistance Factor Design Bridge Design Specifications PDF Download
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Author: Gary Greene Publisher: ISBN: Category : Bridges Languages : en Pages : 36
Book Description
" Much of the fundamental basis for the current lightweight concrete provisions in the AASHTO LRFD Bridge Design Specifications is based on research of lightweight concrete (LWC) from the 1960s. The LWC that was part of this research used traditional mixes of coarse aggregate, fine aggregate, portland cement, and water. Broad-based advancement in concrete technology over the past 50 years has given rise to significant advancements in concrete mechanical and durability performance. The purpose of this document is to give members of AASHTO Subcommittee on Bridges and Structures T-10 the opportunity to begin considering whether revisions to provisions related to LWC within Chapter 5 of the AASHTO LRFD Specifications are warranted. Five specific topics are described in this document where recent LWC research may be sufficient to warrant consideration of a revision to the AASHTO LRFD Specifications. For each topic, the current articles in AASHTO LRFD are described, some of the recent research efforts are mentioned, and then potential revisions are outlined. This document served as supplemental information in support of the discussion that occurred at the March 2012 T-10 meeting in Chicago, Illinois." Technical report documentation p.
Author: Gary Greene Publisher: ISBN: Category : Bridges Languages : en Pages : 36
Book Description
" Much of the fundamental basis for the current lightweight concrete provisions in the AASHTO LRFD Bridge Design Specifications is based on research of lightweight concrete (LWC) from the 1960s. The LWC that was part of this research used traditional mixes of coarse aggregate, fine aggregate, portland cement, and water. Broad-based advancement in concrete technology over the past 50 years has given rise to significant advancements in concrete mechanical and durability performance. The purpose of this document is to give members of AASHTO Subcommittee on Bridges and Structures T-10 the opportunity to begin considering whether revisions to provisions related to LWC within Chapter 5 of the AASHTO LRFD Specifications are warranted. Five specific topics are described in this document where recent LWC research may be sufficient to warrant consideration of a revision to the AASHTO LRFD Specifications. For each topic, the current articles in AASHTO LRFD are described, some of the recent research efforts are mentioned, and then potential revisions are outlined. This document served as supplemental information in support of the discussion that occurred at the March 2012 T-10 meeting in Chicago, Illinois." Technical report documentation p.
Author: Gary Greene Publisher: ISBN: Category : Bridges Languages : en Pages : 100
Book Description
"Much of the fundamental basis for the current lightweight concrete provisions in the AASHTO LRFD Bridge Design Specifications is based on research of lightweight concrete (LWC) from the 1960s. The LWC that was part of this research used traditional mixes of coarse aggregate, fine aggregate, portland cement, and water. Broad-based advancement in concrete technology over the past 50 years has given rise to significant advancements in concrete mechanical and durability performance. The purpose of this document is to give members of AASHTO Subcommittee on Bridges and Structures T-10 the opportunity to begin considering specific proposed revisions to provisions related to LWC within Chapter 5 of the AASHTO LRFD Specifications. A framework for addressing LWC in the specifications is proposed wherein the definition of LWC, the mechanical properties of LWC, and a reduction factor relevant to LWC structural performance is discussed. This document served as supplemental information in support of the discussion that occurred at the September 2012 T-10 meeting in Nashville, Tennessee."--Technical report documentation p.
Author: S. H. Rizkalla Publisher: Transportation Research Board ISBN: 0309099056 Category : Bridges Languages : en Pages : 37
Book Description
Explores recommended revisions to the American Association of State Highway and Transportation Officials' Load and Resistance Factor Design (LRFD) Bridge Design Specifications to extend the applicability of the flexural and compression design provisions for reinforced and prestressed concrete members to concrete strengths greater than 10 ksi.
Author: George Morcous Publisher: ISBN: 9780309375627 Category : Bridges Languages : en Pages : 116
Book Description
"National Cooperative Highway Research Program (NCHRP) Report 819: Self Consolidating Concrete for Cast in Place Bridge Components presents recommended guidelines for the use of self-consolidating concrete (SCC) in cast in place highway bridge components. These guidelines address the selection of constituent materials, proportioning of concrete mixtures, testing methods, fresh and hardened concrete properties, production and quality control issues, and other aspects of SCC. The report also presents proposed changes to the AASHTO LRFD Bridge Design and Construction Specifications to address use of SCC for cast in place highway bridge components. The information contained in the report will guide materials and bridge engineers in evaluating, selecting, and specifying SCC mixtures for use in cast in place concrete bridge components, thereby facilitating construction, improving the working environment and safety, and reducing cost."--Publisher's description
Author: Roger A. Dorton Publisher: Transportation Research Board ISBN: 9780309061056 Category : Technology & Engineering Languages : en Pages : 76
Book Description
This synthesis will be of interest to state department of transportation bridge design and structural engineers, bridge consultants, and others involved in applied and research methods for increasing the live load capacity of existing highway bridges. The synthesis describes the current state of the practice for the various methods used to increase the live load capacity of existing highway bridges. This is done predominantly for bridges in the short- to medium-span range. Information on the more common bridge material types is presented. There is an emphasis on superstructure rather than substructure strengthening.
Author: Publisher: AASHTO ISBN: 156051521X Category : Bridges Languages : en Pages : 271
Book Description
This work offers guidance on bridge design for extreme events induced by human beings. This document provides the designer with information on the response of concrete bridge columns subjected to blast loads as well as blast-resistant design and detailing guidelines and analytical models of blast load distribution. The content of this guideline should be considered in situations where resisting blast loads is deemed warranted by the owner or designer.
Author: Neil Middleton Hawkins Publisher: Transportation Research Board ISBN: 0309098866 Category : Bridges Languages : en Pages : 206
Book Description
"Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration."
Author: David I. McLean Publisher: Transportation Research Board ISBN: 9780309068192 Category : Technology & Engineering Languages : en Pages : 72
Book Description
This synthesis will be of interest to state department of transportation and consulting bridge, structural, and research engineers. The synthesis describes the current state of the practice for determining dynamic impact factors for bridges. Information for the synthesis was collected by surveying U.S. and Canadian transportation agencies and by conducting a literature search using domestic and foreign sources. This report of the Transportation Research Board documents relevant background and recent information with regard to vehicular dynamic load effects on bridges. It provides details on the basic concepts of bridge dynamics, including identification of the main variables affecting bridge dynamic response. In addition, current code provisions for accounting for vehicular dynamic load effects for new bridge design and load evaluation of existing bridges are reported, including a discussion on the background of the provisions. Finally, a discussion of observed field problems associated with vehicular dynamic load effects, as obtained from the survey, are included.
Author: Mark Douglas Bowman Publisher: Transportation Research Board ISBN: 030925826X Category : Technology & Engineering Languages : en Pages : 125
Book Description
"TRB's National Cooperative Highway Research Program (NCHRP) Report 721: Fatigue Evaluation of Steel Bridges provides proposed revisions to Section 7--Fatigue Evaluation of Steel Bridges of the American Association of State Highway and Transportation Officials Manual for Bridge Evaluation with detailed examples of the application of the proposed revisions."--Publisher's description.
Author: Gary Greene
Author: Gary Greene
Author: Gary Greene
Author: S. H. Rizkalla
Author: George Morcous
Author: Roger A. Dorton
Author: 
Author: Neil Middleton Hawkins
Author: David I. McLean
Author: 
Author: Mark Douglas Bowman