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Title:

Preliminary Bond Testing and Splicing of Titanium Alloy Bars

Accession Number:

01833349

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/issn/03611981

Abstract:

The study of the interaction between reinforcement and concrete is important to ensure the composite action of the two materials. A high bond strength is desirable in the reinforcement–concrete interface to avoid pullout failure. The higher bond of reinforcing bars with concrete provides better performance and increases the capacity and service life of structural elements. Bond tests of smooth titanium alloy bars (TiABs) and 60?kips per square inch (ksi) (414?MPa) steel with concrete are conducted in accordance with the ASTM C234. Based on the experimental results, the bond strength of TiABs is generally found to be higher than that of the steel. The paper also presents some preliminary investigation for identifying appropriate and commercially available mechanical couplers for splicing the TiABs. Since TiABs are more expensive than normal rebars, it is necessary to limit their quantity and use in bridge piers (e.g., plastic hinge zone only). Products from a well-known producer of mechanical couplers in the United States are used in the research. A few mechanical couplers are investigated for splicing of #5 (15.9?mm diameter) and #6 (19.1?mm diameter) pseudo-threaded TiABs. Tensile testing is carried out in accordance with ASTM A1034 to address the 2017 AASHTO Load and Resistance Factor Design (LRFD) requirements and a suitable coupler was identified. The appropriate mechanical coupler was identified to be the coupler that is designed specifically for use with high-strength bars. It uses a cold swaged steel sleeve and is thicker.

Supplemental Notes:

Mahesh Acharya https://orcid.org/0000-0002-3009-7099 © National Academy of Sciences: Transportation Research Board 2022.

Language:

English

Authors:

Acharya, Mahesh

ORCID 0000-0002-3009-7099

Khadka, Ruchin
Mashal, Mustafa

ORCID 0000-0003-4654-0531

Pagination:

pp 410-427

Publication Date:

2022-5

Serial:

Transportation Research Record: Journal of the Transportation Research Board

Volume: 2676
Issue Number: 5
Publisher: Sage Publications, Incorporated
ISSN: 0361-1981
EISSN: 2169-4052
Serial URL: http://journals.sagepub.com/home/trr

Media Type:

Web

Features:

References (18)

Subject Areas:

Bridges and other structures; Highways; Materials

Files:

TRIS, TRB, ATRI

Created Date:

Jan 20 2022 3:12PM