Thesis (MSc) - Cyprus International University. Institute of Graduate Studies and Research Civil Engineering Department

Includes bibliography (sheets 51-54)

ABSTRACT
Rapid population growth and urbanization of a considerable increment are in demand
for cement as construction material. It is vital to reduce the environmental effects
associated with Ordinary Portland. Aggregate (coarse and fine) is mixed with cement
and water to form concrete. A stone system is built since water is introduced to
concrete. Although concrete is weak in tension and strong in compression, the
reinforcement material is used to enhance its strength. Other reinforcing elements are
used in concrete to assist it in withstanding stress. For several decades, fibers were
added to concrete to improve and adjust its strength, typically attributed to Fiber
Reinforced Concrete (FRC). Concrete's mechanical are strengthened through using
fibres in studies. The study intends to examine the mechanical characteristics of hybrid
concrete with M-25 strength to fibre reinforcement. Steel fibers and basalt fibers have
been applied with varying (0.25 , 0.5 , 0.75 , and 1) % amounts of concrete. The results
demonstrate that chopped basalt fibre behaves dramatically better during tensile stress,
whereas crimped steel fibre gives better results over compression. The beams are
indicated to break in shear, with most cracks occurring relatively close to the support.
Correspondingly, the third middle part of the beam had some crack growth due to
different fibre dosages. A hybrid fibre beam consisting of 0.75 steel and 0.25 is less
expensive than a regular stirrup-equipped beam.
Keywords: Basalt Fibre, Flexural failure, FRC, Hybrid fiber, Ordinary Portland, Shear
failure, Shear resistance, Steel Fibre