ABSTRACT
DETERMINATION OF MECHANICAL PROPERTIES OF
HYBRID FIBER REINFORCED CONCRETE
Yurtseven, Alp Eren
M.Sc. Department of Civil Engineering
Supervisor: Prof. Dr. Mustafa Tokyay
Co-Supervisor: Asst. Prof. Dr. . Ö / zgü / r Yaman
August 2004, 82 pages
Fiber reinforcement is commonly used to provide toughness and ductility to brittle
cementitious matrices. Reinforcement of concrete with a single type of fiber may
improve the desired properties to a limited level. A composite is termed as hybrid, if
two or more types of fibers are rationally combined to produce a composite that
derives benefits from each of the individual fibers and exhibits a synergetic response.
This study aims to characterize and quantify the mechanical properties of hybrid
fiber reinforced concrete. For this purpose nine mixes, one plain control mix and
eight fiber reinforced mixes were prepared. Six of the mixes were reinforced in a
hybrid form. Four different types of fibers were used in combination, two of which
were macro steel fibers, and the other two were micro fibers. Volume percentage of
fiber inclusion was kept constant at 1.5%. In hybrid reinforced mixes volume
percentage of macro fibers was 1.0% whereas the remaining fiber inclusion was
v
composed of micro fibers. Slump test was carried out for each mix in the fresh state.
28-day compressive strength, flexural tensile strength, flexural toughness, and impact
resistance tests were performed in the hardened state. Various numerical analyses
were carried out to quantify the determined mechanical properties and to describe the
effects of fiber inclusion on these mechanical properties.
Keywords: Fiber Reinforcement, Hybrid Composite, Toughness, Impact
Resistance
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12605268/index.pdf |
| Date | 01 August 2004 |
| Creators | Yurtseven, Alp Eren |
| Contributors | Tokyay, Mustafa |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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