Confinement effects on high-strength concrete

Hong Mei, Panos D. Kiousis, Mohammad R. Ehsani, Hamid - Saadatmanesh

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

An experimental investigation was conducted on the stress-strain characteristics of steel sleeve confined high-strength concrete (HSC). The axial load and strains of concrete, and the axial and hoop strains of the confining steel sleeves were measured. From these measurements, accurate stress-strain relations of the concrete core were produced, along with confinement calculations based on von-Mises elastoplastic response of the steel sleeves. Confinements ranging from 5 to 19 MPa were calculated. This confinement had a profound effect on the strength of concrete, as much as tripling its unconfined strength of 70 MPa. The increase in ductility was found to develop slower for low amounts of confining steel due to a lagging development of confining pressure. This was attributed to the reduced tendencies of HSC to exhibit lateral expansion and the early yielding of the sleeve hoop stresses due to the biaxial nature of stresses within the sleeves.

Original languageEnglish (US)
Pages (from-to)548-553
Number of pages6
JournalACI Structural Journal
Volume98
Issue number4
StatePublished - Jul 2001

Fingerprint

Steel
Concretes
Stress measurement
Axial loads
Ductility

Keywords

  • Confinement
  • Ductility
  • High-strength concrete

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

Cite this

Mei, H., Kiousis, P. D., Ehsani, M. R., & Saadatmanesh, H. . (2001). Confinement effects on high-strength concrete. ACI Structural Journal, 98(4), 548-553.

Confinement effects on high-strength concrete. / Mei, Hong; Kiousis, Panos D.; Ehsani, Mohammad R.; Saadatmanesh, Hamid -.

In: ACI Structural Journal, Vol. 98, No. 4, 07.2001, p. 548-553.

Research output: Contribution to journalArticle

Mei, H, Kiousis, PD, Ehsani, MR & Saadatmanesh, H 2001, 'Confinement effects on high-strength concrete', ACI Structural Journal, vol. 98, no. 4, pp. 548-553.
Mei H, Kiousis PD, Ehsani MR, Saadatmanesh H. Confinement effects on high-strength concrete. ACI Structural Journal. 2001 Jul;98(4):548-553.
Mei, Hong ; Kiousis, Panos D. ; Ehsani, Mohammad R. ; Saadatmanesh, Hamid -. / Confinement effects on high-strength concrete. In: ACI Structural Journal. 2001 ; Vol. 98, No. 4. pp. 548-553.
@article{addd86c8a5bc481789329a11c484ac3c,
title = "Confinement effects on high-strength concrete",
abstract = "An experimental investigation was conducted on the stress-strain characteristics of steel sleeve confined high-strength concrete (HSC). The axial load and strains of concrete, and the axial and hoop strains of the confining steel sleeves were measured. From these measurements, accurate stress-strain relations of the concrete core were produced, along with confinement calculations based on von-Mises elastoplastic response of the steel sleeves. Confinements ranging from 5 to 19 MPa were calculated. This confinement had a profound effect on the strength of concrete, as much as tripling its unconfined strength of 70 MPa. The increase in ductility was found to develop slower for low amounts of confining steel due to a lagging development of confining pressure. This was attributed to the reduced tendencies of HSC to exhibit lateral expansion and the early yielding of the sleeve hoop stresses due to the biaxial nature of stresses within the sleeves.",
keywords = "Confinement, Ductility, High-strength concrete",
author = "Hong Mei and Kiousis, {Panos D.} and Ehsani, {Mohammad R.} and Saadatmanesh, {Hamid -}",
year = "2001",
month = "7",
language = "English (US)",
volume = "98",
pages = "548--553",
journal = "ACI Structural Journal",
issn = "0889-3241",
publisher = "American Concrete Institute",
number = "4",

}

TY - JOUR

T1 - Confinement effects on high-strength concrete

AU - Mei, Hong

AU - Kiousis, Panos D.

AU - Ehsani, Mohammad R.

AU - Saadatmanesh, Hamid -

PY - 2001/7

Y1 - 2001/7

N2 - An experimental investigation was conducted on the stress-strain characteristics of steel sleeve confined high-strength concrete (HSC). The axial load and strains of concrete, and the axial and hoop strains of the confining steel sleeves were measured. From these measurements, accurate stress-strain relations of the concrete core were produced, along with confinement calculations based on von-Mises elastoplastic response of the steel sleeves. Confinements ranging from 5 to 19 MPa were calculated. This confinement had a profound effect on the strength of concrete, as much as tripling its unconfined strength of 70 MPa. The increase in ductility was found to develop slower for low amounts of confining steel due to a lagging development of confining pressure. This was attributed to the reduced tendencies of HSC to exhibit lateral expansion and the early yielding of the sleeve hoop stresses due to the biaxial nature of stresses within the sleeves.

AB - An experimental investigation was conducted on the stress-strain characteristics of steel sleeve confined high-strength concrete (HSC). The axial load and strains of concrete, and the axial and hoop strains of the confining steel sleeves were measured. From these measurements, accurate stress-strain relations of the concrete core were produced, along with confinement calculations based on von-Mises elastoplastic response of the steel sleeves. Confinements ranging from 5 to 19 MPa were calculated. This confinement had a profound effect on the strength of concrete, as much as tripling its unconfined strength of 70 MPa. The increase in ductility was found to develop slower for low amounts of confining steel due to a lagging development of confining pressure. This was attributed to the reduced tendencies of HSC to exhibit lateral expansion and the early yielding of the sleeve hoop stresses due to the biaxial nature of stresses within the sleeves.

KW - Confinement

KW - Ductility

KW - High-strength concrete

UR - http://www.scopus.com/inward/record.url?scp=0035412978&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035412978&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0035412978

VL - 98

SP - 548

EP - 553

JO - ACI Structural Journal

JF - ACI Structural Journal

SN - 0889-3241

IS - 4

ER -