Fracture Toughness, Hardness, and Impact Strength of Basalt Fiber Reinforced Engineered Cementitious Composites
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Keywords:
Engineered Cementitious Composites, Micro-Basalt Fibers, Nano-Titania, Hardness, Impact StrengthAbstract
The Engineered Cementitious Composites (ECC) mortars are the most suitable alternatives for
cement in the concrete industry in developing sustainable and environmentally friendly construction.
Therefore, for the practical applications of fiber-reinforced (FRF) ECC mortars, it is essential to increase
the mechanical and microstructural behavior of FRF-ECC mortars utilizing micro-fibers and nano-particles.
The present study has struggled to ameliorate the fracture and impact behavior of micro basalt-FRF fly ash
based ECC mortars by adding different amounts of nano-Titania. Four different dosages of Titania (varying
between 1% and 4%) of the mortar are used to manufacture ECC mortars comprising 2 wt.% of micro
basalt fibers (MBF). For a comparative assessment, a control model with 2% MBF having no dosage of
Titania is also manufactured. The outcomes of the current study displayed that the use of 3% Titania in
micro basalt-FRF-ECC mortar improved the hardness, impact strength, and fracture toughness by 17.1%,
54.3%, and 25%, respectively. Consequently, the usage of Titania is operative in the enhancement of the
mechanical and fracture behavior of FRF-ECC mortar. These bands appear larger and more pronounced in
specimens containing additivesthis could be due to the high content of water within ECC network, which
could affect the strength.
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