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IJSTR >> Volume 7 - Issue 5, May 2018 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Effect Of Concrete Strength On The Flexural Behavior Of Vierendeel Steel And Concrete Composite Beams

[Full Text]

 

AUTHOR(S)

Hayder T. Nimnim, Mohammed Q. Shaaban

 

KEYWORDS

Vierendeel truss, Composite truss, Compressive strength, Composite vierendeel beam, Flexural Behavior, Composite steel-concrete beam.

 

ABSTRACT

The scope of this experimental and numerical works is to investigate and study the effect of concrete compressive strength on flexural behavior of composite vierendeel steel-conncrete composite beams when considering the top chord member of the truss (compressive elements) is the concrete slab. The works consist of manufacturing and testing three specimens of 2000 mm span with slab width 1000 mm and each specimen contains two truss. The control beam has 25 MPa compressive strength and other beams have (35, 50) MPa. The results that attained from this study are load-deflection curves, ultimate load capacities, strains, crack patterns and failure modes. The concludes from this study are; an increase concrete strength (f’c) of slab from 25 MPa to 35 MPa leads to increase ultimate load capacity by (28.89) %. Whereas increasing concrete strength from 25 MPa to 50 MPa leads to increase ultimate load capacity by (91.63) %.

 

REFERENCES

[1] Brattland, A., and Kennedy, D.J.L. 1986. Shrinkage and flexural tests of two full-scale composite trusses. Structural Engineering Report No. 143, Department of Civil Engineering, The University of Alberta, Edmonton, Alta.

[2] ACI 318-14, “Building Code Requirements for Structural Concrete and Commentary,” American Concrete Institute, was adopted August 29, 2014, and published September 2014.

[3] Iraqi laboratory specifications No. 3868 of the Central Organization for Standardization and Quality Control.

[4] Iraqi specification No. 5, “Portland Cement,” Baghdad, 1984.

[5] Iraqi specification No. 45, “Natural Sources for Gravel that is Used in Concrete and Construction,” Baghdad, 1984.

[6] American Society of Testing and Materials, “Standard Specifications for Concrete Aggregates,” ASTM C-33, West Conshohocken, PA., 1986.

[7] ASTM C 494/C 494M-99, “Standard Specification for Chemical Admixtures for Concrete,” Annual Book of ASTM Standards, American Society for Testing and Materials, Vol.04.02, 1999.

[8] BS 5075 Part 1 and BS EN 934, Part 2.

[9] ASTM A 615/A615M-16, “Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement, ” 2016 Annual Book of ASTM Standards, Vol.01.04, ASTM International, West Conshohocken, PA, 2016, www.astm.org.

[10] ASTM A 370-05, “Standard Test Method and Definition for Mechanical Testing of Steel Products,” 2005 Annual Book of ASTM Standards, Vol.01.01, ASTM, Philadelphia, PA., 2005.

[11] ACI 211.4R – 93, “Guide for Selecting Proportions for High-Strength Concrete with Portland Cement and Fly Ash,” American Concrete Institute Committee 211, Copyright, September 1.1993.

[12] ACI 214 – 02, “Evaluation of Strength Test Results of Concrete,” American Concrete Institute Committee 214, Copyright, June 27, 2002.

[13] American Concrete Institute, "Standard Practice for Selecting proportions for Normal, Heavyweight and Mass Concrete, ACI 211.1-91",pp. 6-38.