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Polytechnic Journal

2019

Flexural strength

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Full-Text Articles in Life Sciences

Evaluation Of Mix Proportions And Mechanical Properties Of Normal And High-Strength Fibers Concrete, Imad R. Mustafa, Omar Q. Aziz Dec 2019

Evaluation Of Mix Proportions And Mechanical Properties Of Normal And High-Strength Fibers Concrete, Imad R. Mustafa, Omar Q. Aziz

Polytechnic Journal

An experimental program is carried out to evaluate the mix design and mechanical properties of normal strength concrete (NSC) grade 40 MPa and high-strength concrete grade 60 and 80 MPa. The study investigates using silica fume to produce high-strength concrete grade 80 MPa and highlights the influence of adding steel fiber on the mechanical properties of normal and high-strength concrete. For NSC, the compressive strength is found at 7 and 28 days. While for higher strength concrete, the compressive strength is determined at 7, 28, and 56 days. The splitting tensile strength and flexural strength is determined at 28 days. …


Evaluation Of Mix Proportions And Mechanical Properties Of Normal And High-Strength Fibers Concrete, Imad R. Mustafa, Omar Q. Aziz Dec 2019

Evaluation Of Mix Proportions And Mechanical Properties Of Normal And High-Strength Fibers Concrete, Imad R. Mustafa, Omar Q. Aziz

Polytechnic Journal

An experimental program is carried out to evaluate the mix design and mechanical properties of normal strength concrete (NSC) grade 40 MPa and high-strength concrete grade 60 and 80 MPa. The study investigates using silica fume to produce high-strength concrete grade 80 MPa and highlights the influence of adding steel fiber on the mechanical properties of normal and high-strength concrete. For NSC, the compressive strength is found at 7 and 28 days. While for higher strength concrete, the compressive strength is determined at 7, 28, and 56 days. The splitting tensile strength and flexural strength is determined at 28 days. …


Evaluation Of Mix Proportions And Mechanical Properties Of Normal And High-Strength Fibers Concrete, Imad R. Mustafa, Omar Q. Aziz Dec 2019

Evaluation Of Mix Proportions And Mechanical Properties Of Normal And High-Strength Fibers Concrete, Imad R. Mustafa, Omar Q. Aziz

Polytechnic Journal

An experimental program is carried out to evaluate the mix design and mechanical properties of normal strength concrete (NSC) grade 40 MPa and high-strength concrete grade 60 and 80 MPa. The study investigates using silica fume to produce high-strength concrete grade 80 MPa and highlights the influence of adding steel fiber on the mechanical properties of normal and high-strength concrete. For NSC, the compressive strength is found at 7 and 28 days. While for higher strength concrete, the compressive strength is determined at 7, 28, and 56 days. The splitting tensile strength and flexural strength is determined at 28 days. …


Evaluation Of Mix Proportions And Mechanical Properties Of Normal And High-Strength Fibers Concrete, Imad R. Mustafa, Omar Q. Aziz Dec 2019

Evaluation Of Mix Proportions And Mechanical Properties Of Normal And High-Strength Fibers Concrete, Imad R. Mustafa, Omar Q. Aziz

Polytechnic Journal

An experimental program is carried out to evaluate the mix design and mechanical properties of normal strength concrete (NSC) grade 40 MPa and high-strength concrete grade 60 and 80 MPa. The study investigates using silica fume to produce high-strength concrete grade 80 MPa and highlights the influence of adding steel fiber on the mechanical properties of normal and high-strength concrete. For NSC, the compressive strength is found at 7 and 28 days. While for higher strength concrete, the compressive strength is determined at 7, 28, and 56 days. The splitting tensile strength and flexural strength is determined at 28 days. …


Effects Of Polypropylene Fiber Content On Strength And Workability Properties Of Concrete, Yassin A. Ibrahim, Arsalan H. Hasan, Nyazi R. Maroof Apr 2019

Effects Of Polypropylene Fiber Content On Strength And Workability Properties Of Concrete, Yassin A. Ibrahim, Arsalan H. Hasan, Nyazi R. Maroof

Polytechnic Journal

Low tensile strength of plain concrete is due to the inherent presence of microcracks due to drying shrinkage occurrences or other causes of volume changes in concrete. The addition of a proper amount of fibers to concrete would act as crack arrester thus improves its static or dynamic properties. In this paper, the concrete with different amount of polypropylene fiber was investigating to find out the fibers effect on its fresh and mature properties. A plain concrete mix (reference mix) prepared for comparison purposes. Nine concrete mixes were prepared with different fiber volume fraction (FVF) ranging from 0.06% to 2.16%. …


Effects Of Polypropylene Fiber Content On Strength And Workability Properties Of Concrete, Yassin A. Ibrahim, Arsalan H. Hasan, Nyazi R. Maroof Apr 2019

Effects Of Polypropylene Fiber Content On Strength And Workability Properties Of Concrete, Yassin A. Ibrahim, Arsalan H. Hasan, Nyazi R. Maroof

Polytechnic Journal

Low tensile strength of plain concrete is due to the inherent presence of microcracks due to drying shrinkage occurrences or other causes of volume changes in concrete. The addition of a proper amount of fibers to concrete would act as crack arrester thus improves its static or dynamic properties. In this paper, the concrete with different amount of polypropylene fiber was investigating to find out the fibers effect on its fresh and mature properties. A plain concrete mix (reference mix) prepared for comparison purposes. Nine concrete mixes were prepared with different fiber volume fraction (FVF) ranging from 0.06% to 2.16%. …