SelfConsolidating Concrete for Prestressed Bridge Girders

SelfConsolidating Concrete for Prestressed Bridge Girders

Bond, Transfer Length, and Development Length of

Due to its economic advantages, the use of self-consolidating concrete (SCC) has increased rapidly in recent years. However, because SCC mixes typically have decreased amounts of coarse aggregate and high amounts of admixtures, industry members have expressed concerns that the bond of prestressing strand in SCC may be compromised.

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Self-Compacting Concrete (SCC) for Prestressed Bridge Girders

prestressed concrete bridge girders for the State of Minnesota. Six precast prestressed bridge girders were cast using four SCC and two conventional concrete mixes. Variations in the mixes included cementitious materials (ASTM Type I and III cement and Class C fly ash), natural gravel and crushed stone as coarse aggregate, and several admixtures.

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Development and Testing of Chemically-Based Self

Self-consolidating concrete (SCC) has the potential to significantly reduce costs associated with concrete construction. SCC is a highly flowable, nonsegregating concrete that has a variety of advantages over conventional concrete (CC). However, SCC is not without its problems, which can include increased creep and shrinkage, as well as decreased bond and shear strength.

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University of Minnesota tests self-consolidating concrete

Free Online Library: University of Minnesota tests self-consolidating concrete in prestressed girders.(Technical News, Brief article) by "Public Roads"; Business Engineering and manufacturing Government Concrete Research Concretes Girders Universities and colleges Research agreements United States

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Characterization of Self-Consolidating Concrete for Design

Characterization of Self-Consolidating Concrete for Design of Precast, Prestressed Bridge Girders. This report documents the findings of a Texas Department of Transportation sponsored research project to study self-consolidating concrete (SCC) for precast concrete structural applications.

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Expanding the Use of Precast Concrete in Texas Bridges

Expanding the Use of Precast Concrete in Texas Bridges . Just the Facts Total Number of On-System Bridges (Excluding Culverts): –21,686 Total Number with Prestressed Concrete Superstructures: –11,037 (that’s 51%) About 90% of New Bridges Built with Prestressed Concrete Superstructures –92% in FY 2013 . 2

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Transfer & Development Lengths in Prestressed Self

Title: Transfer & Development Lengths in Prestressed Self-Consolidating Concrete Bridge Box and I-Girders: Author(s): Andrawes, Bassem; Andrew Pozolo: Subject(s): Self-Consolidating Concrete, Full-scale Girders, Bond Behavior, Pullout Tests, Transfer Length, Development Length

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STRUCTURE magazine | Self-Consolidating Concrete

Self-consolidating concrete (SCC) is increasingly used for reinforced formed-members, architectural concrete, and floors and slabs. It is often the only solution for structural repairs. SCC is a highly flowable, non-segregating concrete with a slump/flow of 20 to 30 inches. SCC can be easily placed and completely fills forms under its own

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An Experimental Study on Shear Strength of Chemically

An experimental investigation was conducted to compare the shear strength of full-scale beams constructed with chemically-based, self-consolidating concrete (SCC) with conventional concrete (CC). This experimental program consisted of 16 rectangular beams (12 without shear reinforcing and 4 with shear reinforcing in the form of stirrups), 8

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UGPTI - Self-Consolidating Concrete for Prestressed Bridge

At the end of this project, recommendations for SCC mixture design were established to promote SCC in prestressed bridge girders in Wisconsin. How to Cite. Seo, Junwon, Eduardo Torres, William Schaffer, and Nadim Wehbe. Self-Consolidating Concrete for Prestressed Bridge Girders, MPC-17-334. North Dakota State University - Upper Great Plains

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Use of Self-Consolidating Concrete in Precast, Prestressed

The full-scale implementation of precast, prestressed SCC girders consisted of seven BT-54 bulb-tees and seven BT-72 bulb-tees placed in a bridge in rural Alabama. Companion girders were constructed with vibrated concrete. Fresh concrete properties and early-age structural properties were assessed at the plant; measurement of mechanical

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Self-Consolidating Concrete | Precast Concrete

Under NCHRP Project 18-12, “Self-Consolidating Concrete for Precast, Prestressed Concrete Bridge Elements,” the University of Sherbrooke, Quebec, Canada, worked with the objectives of (1) developing guidelines for the use of SCC in precast, prestressed con-crete bridge elements and (2) recommending relevant changes to AASHTO LRFD Bridge

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Bond Characteristics of Self-consolidating Concrete for

This paper presents the results of an extensive experimental program conducted to determine the material and bond characteristics of a proposed self-consolidating concrete (SCC) mixture for bridge girders. Fifteen full-scale, pretensioned 5CC specimens were tested to evaluate the transfer and development lengths of their strand.

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PDF Chapter 14 - Prestressed Concrete Girders

Volume 3: Structural Drafting Standards - Chapter 14: Prestressed Concrete Girders Drafting and Design Presentation Standards Manual, Transport and Main Roads, March 2018 1 . 14 Prestressed Concrete Girders . 14.1 Glossary of t erms . For a complete glossary of terms refer Chapter 1 - Introduction. 14.2 Figures and examples shown in this v

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Bond Strength of Self-Consolidating Concrete for

BOND STRENGTH OF SELF-CONSOLIDATING CONCRETE FOR PRESTRESSED CONCRETE APPLICATIONS 5. Report Date December 31, 2004 6. Performing Organization Code 7. Author(s) Girgis, A.F., and Tuan, C.T. 8. Performing Organization Report several pretensioned bridge girders cast with SCC. In addition, the bond strength of SCC with

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Experimental and Statistical Investigation of Self

AbstractSelf-consolidating concrete (SCC) has the potential to increase precast production and quality, especially for production of prestressed concrete (PSC) bridge girders due to its superior wo

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Pci Bridge Design Manual 3rd Edition

Precast Prestressed Concrete Bridge Design Manual (3rd edition), and the KDOT (2015) Design Manual, Volume III – Bridge Section. The overall finding of this study is that K-girders should continue to be used instead of NU girders whenever normal spans and girder spacing allow, as this will likely result in the most economical superstructure.

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Self-Consolidating Concrete (SCC) and High-Volume Fly Ash

service life concrete. In this implementation study for Missouri Bridge A7957, a level of 50% fly ash to cement proportions was utilized as well as normal strength self-consolidating concrete (NS-SCC) and high-strength self-consolidating concrete (HS-SCC) in its primary carrying elements to showcase the use of these innovative materials.

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Prestress Loss Behavior of High-Strength SelfConsolidating

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Codes in the United States limit the extreme compressive fiber stress of prestressed concrete members to 60 % of the concrete strength. While the purpose of this limit is to address serviceability, this restriction limits the capability of the materials. Six prestressed girders produced with high-strength self

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PDF Self-Consolidating Concrete for Bridges and Structures

Self-consolidating concrete (SCC) may be used in structural members such as precast noise wall panels, barriers, three-sided structures, etc. as described in Standard Specification Section 6- 02.3(27), and may be used in prestressed concrete girders in accordance with Sections 6-

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PDF Self-Consolidating Concrete for Prestressed Bridge Girders

Self-Consolidating Concrete for Prestressed Bridge Girders Junwon Seo, PhD, PE (Assistant Professor) Eduardo Torres, EIT (Graduate Student) William Schaffer, EIT (Graduate Student) Department of Civil and Environmental Engineering South Dakota State University WisDOT ID no. 0092-15-03 July 2017

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self-consolidating concrete Archives - National Precast

Prestress Losses in High-Performance SCC Prestressed Bridge Girders. July 28, 2010 Leave a Comment. Self-consolidating concrete (SCC) requires no vibration and fills in voids under its own weight when placed. SCC’s primary benefits are its ease of placement and reduced labor costs. Other advantages of SCC include Resistance to segregation and

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Evaluation and Long-Term Monitoring of the Time-Dependent

Earhart Bridge (the Atchison River Bridge Project, 593 K-8238-02) to evaluate the long term - performance of a SCC mix used in the pre-stressed concrete bridge girders. It describes the fabrication of the three girders and the measures taken for instrumentation at this stage,

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Tuan | Prestressed Concrete | Concrete

The concrete was cast from the same mix of the bridge girders. 17 cylinders per concrete mix (4 in.x 8 in.)(102 mm x 203 mm) were kept to monitor the concrete strength development with time. A central-hole hydraulic jack with a 110 kips (55 ton) capacity was used to pull-out the strands.

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Service response and evaluation of prestressed concrete

bridge load rating. Bridge A7957 is the first implementation project executed by MoDOT using high-strength and normal-strength SCC in prestressed concrete members. In addition, Bridge A7957 was a unique opportunity to monitor and establish the baseline service response and strength capacity of its main supporting members. The proposed

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