Effectiveness of High Early Strength Concrete Class 50AF With Polypropylene Fibers as a Cost- Effective Alternative for Field-Cast Connections of Precast Elements in Accelerated Bridge Construction

Ebrahimpour, Arya; Mashal, Mustafa; Casanova, Maximilian; Rashique, Utsa; Clauson, Christopher; Shokrgozar, Ali; Idaho State University. Department of Civil and Environmental Engineering

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Effectiveness of High Early Strength Concrete Class 50AF With Polypropylene Fibers as a Cost- Effective Alternative for Field-Cast Connections of Precast Elements in Accelerated Bridge Construction

2018-07-01
By Ebrahimpour, Arya ; Mashal, Mustafa ; Casanova, Maximilian ; ...

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Creators:

Ebrahimpour, Arya ; Mashal, Mustafa ; Casanova, Maximilian ; Rashique, Utsa ; Clauson, Christopher ; ... More +

Ebrahimpour, Arya ; Mashal, Mustafa ; Casanova, Maximilian ; Rashique, Utsa ; Clauson, Christopher ; Shokrgozar, Ali Less -
Corporate Creators:

Idaho State University. Department of Civil and Environmental Engineering
Corporate Contributors:

Idaho. Transportation Department. Research Program ; United States. Department of Transportation. Federal Highway Administration

Idaho. Transportation Department. Research Program ; United States. Department of Transportation. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Accelerated Bridge Construction Bridge Decks Bridges Concrete Connection High-early Strength Concrete High Early Strength Cement Polypropylene Precast Concrete Precast ElementS
Publication/ Report Number:

FHWA-ID-16-246
Resource Type:

Tech Report
Geographical Coverage:

Idaho ; United States

Idaho ; United States Less -
Edition:

Final Report 12/16/2016 -- 7/31/2018
Corporate Publisher:

Idaho Transportation Department
Abstract:

Accelerated Bridge Construction (ABC) methods are relatively new in the U.S. and Idaho. ABC requires that bridge precast concrete components be effectively connected to one another in the field. Currently Ultra-High Performance Concrete (UHPC) is used to connect precast bridge deck panels or girders in 6-in. wide closure pours between the precast elements. As an alternative, Idaho Transportation Department (ITD) is proposing to place High-Early Strength (HES) concrete with polypropylene fibers (compressive strength of minimum 5 ksi in 28 days) in 10-in. closure pours between girders. There are several advantages to this alternate material. An experimental and numerical research project was carried out at Idaho State University to determine the effectiveness of the alternate material and the connection detail. The experimental work consisted of small specimen testing and larger specimens with headed bars. Among the six closure pour concrete mixes considered, one was selected that had the largest compressive and tensile strength values and the lowest shrinkage value. Using the results of the larger specimens, a finite element model of the new connection was developed. The behavior of the ITD’s 10-in. closure pour connection with the optimum mix longitudinally placed between precast girders of a bridge was studied. For this analysis, the AASHTO’s requirements for Strength I, Service I, and Fatigue I Limit States were considered.
Format:

PDF
Funding:

ISU-17-01
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:fc8a71e0a69b25462c27805aaae44278ae7d24b6a2f927669f268b08cf4bb955
Download URL:

https://rosap.ntl.bts.gov/view/dot/63572/dot_63572_DS1.pdf
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Effectiveness of High Early Strength Concrete Class 50AF With Polypropylene Fibers as a Cost- Effective Alternative for Field-Cast Connections of Precast Elements in Accelerated Bridge Construction

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