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112718

SHEAR BEHAVIOR OF REDUCED-WEIGHT REINFORCED CONCRETE BEAMS

Article

Last updated: 04 Jan 2025

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Subjects

-

Tags

Civil Engineering: structural, Geotechnical, reinforced concrete and s…nd sanitary engineering, Hydraulic, Railway, construction Management.

Abstract

This paper presents an investigation to improve the understanding of the shear behavior of reinforced reduced-weight concrete beams made of light-weight expanded clay aggregate (LECA) as a partial replacement (by volume) to the normal-weight aggregates. Eleven reinforced concrete beams divided into two groups were fabricated and tested using the symmetrical two-point loads test. The tested beams consisted of seven reinforced reduced-weight concrete beams and four reinforced normal-weight control beams. The effects of several variables such as type of concrete according to its weight, shear span to depth ratio (a/d), concrete grade and the amount of stirrups were experimentally investigated. The behavior of the tested beams was analyzed in terms of mode of failure, load-deflection response, load-strains response, shear stress- shear strain relationships, first shear cracking loads, ultimate carrying capacity, stiffness and ductility. Furthermore, the test results were compared with the predictions using the Egyptian Code for Concrete Structures, (ECP 203). Despite the experimental results illustrated that the reduced-concrete beams were shown less load carrying capacity, stiffness and ductility than those of the comparative normal-weight concrete beams, the theoretical predictions using the Egyptian Code were quite conservative. This could be attributed to that the effect of arch action is still underestimated in the Egyptian Code.

DOI

10.21608/jesaun.2012.112718

Keywords

reduced-weight concrete beam, Shear behavior, failure mode, first shear cracking load, Ultimate Load

Authors

First Name

Mohamed A.

Last Name

Khafaga

MiddleName

-

Affiliation

Associate Professor, Properties of Materials and Quality Control Institute, Housing and Building National Research Center, Cairo, Egypt

Email

makhafaga@yahoo.com

City

-

Orcid

-

Volume

40

Article Issue

No 1

Related Issue

16626

Issue Date

2012-01-01

Receive Date

2011-11-27

Publish Date

2012-01-01

Page Start

121

Page End

146

Print ISSN

1687-0530

Online ISSN

2356-8550

Article File

JESAUN_Volume 40_Issue No 1_Pages 121-146.pdf

PDF . 1.2MB

Link

https://jesaun.journals.ekb.eg/article_112718.html

Detail API

https://jesaun.journals.ekb.eg/service?article_code=112718

Order

8

Type

Research Paper

Type Code

1,438

Publication Type

Journal

Publication Title

JES. Journal of Engineering Sciences

Publication Link

https://jesaun.journals.ekb.eg/

MainTitle

SHEAR BEHAVIOR OF REDUCED-WEIGHT REINFORCED CONCRETE BEAMS

Details

Type

Article

Created At

23 Jan 2023