Degree Type

Dissertation

Date of Award

1993

Degree Name

Doctor of Philosophy

Department

Industrial Education and Technology

First Advisor

William D. Wolansky

Abstract

This research was conducted to analyze the flexural and tensile strengths of steel and polypropylene fiber hybrid concrete composite. The concrete used in fabrication of flexural beams and tensile cylinders consisted of type I portland cement, fine aggregate, and 3/4 inch coarse aggregate. The investigation involved 56 beams and 56 cylinders each divided into eight groups. Hooked steel fiber with an aspect ratio of 100 and volume fraction of 1.0% in conjunction with collated and fiberlated polypropylene fiber with volume fractions of 0.1, 0.2, and 0.3 percent was utilized. The center point loading and splitting tensile test methods were used to determine flexural and tensile strengths of concrete composite;The flexural and tensile strengths of hybrid groups were higher than conventional concrete. The maximum flexural and tensile strength was obtained in the case of beams and cylinders with 1.0% steel and 0.2% polypropylene fiber hybrid. The ultimate flexural and tensile strength in concrete beams and cylinders was 49% and 77% higher than conventional concrete.

DOI

https://doi.org/10.31274/rtd-180813-9586

Publisher

Digital Repository @ Iowa State University, http://lib.dr.iastate.edu/

Copyright Owner

Shahram Varzavand

Language

en

Proquest ID

AAI9321221

File Format

application/pdf

File Size

116 pages

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