Tensile strength/yield strength (TS/YS) ratios of high-strength steel (HSS) reinforcing bars

Tavio, Retno Anggraini*, I. Gede Putu Raka, Agustiar

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

21 Citations (Scopus)

Abstract

The building codes such as American Concrete Institute (ACI) 318M-14 and Standard National Indonesia (SNI) 2847:2013 require that the ratio of tensile strength (TS) and yield strength (YS) should not less than 1.25. The requirement is based on the assumption that a capability of a structural member to develop inelastic rotation capacity is a function of the length of the yield region. This paper reports an investigation on various steel grades, namely Grades 420, 550, 650, and 700 MPa, to examine the impact of different TS/YS ratios if it is less or greater than the required value. Grades 550, 650, and 700 MPa were purposely selected with the intention to examine if these higher grades are still promising to be implemented in special structural systems since they are prohibited by the building codes for longitudinal reinforcement, whereas Grade 420 MPa bars are the maximum limit of yield strength of reinforcing bars that is allowable for longitudinal reinforcement of special structural systems. Tensile tests of these steel samples were conducted under displacement controlled mode to capture the complete stress-strain curves and particularly the post-yield response of the steel bars. From the study, it can be concluded that Grade 420 performed higher TS/YS ratios and they were able to reach up to more than 1.25. However, the High Strength Still (HSS) bars (Grades 550, 600, and 700 MPa) resulted in lower TS/YS ratios (less than 1.25) compared with those of Grade 420 MPa.

Original languageEnglish
Title of host publicationProceedings of the International Seminar on Metallurgy and Materials, ISMM 2017
Subtitle of host publicationMetallurgy and Advanced Material Technology for Sustainable Development
EditorsM. Yunan Hasbi, Daniel Panghihutan Malau, Dhyah Annur, M. Ikhlasul Amal, Satrio Herbirowo, Yulinda Lestari
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735416697
DOIs
Publication statusPublished - 15 May 2018
Event1st International Seminar on Metallurgy and Materials: Metallurgy and Advanced Material Technology for Sustainable Development, ISMM 2017 - Jakarta, Indonesia
Duration: 24 Oct 201725 Oct 2017

Publication series

NameAIP Conference Proceedings
Volume1964
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference1st International Seminar on Metallurgy and Materials: Metallurgy and Advanced Material Technology for Sustainable Development, ISMM 2017
Country/TerritoryIndonesia
CityJakarta
Period24/10/1725/10/17

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