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Computers and Concrete Volume 28, Number 5, November 2021 , pages 451-463 DOI: https://doi.org/10.12989/cac.2021.28.5.451 |
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Properties of self-compacted concrete incorporating basalt fibers: Experimental study and Gene Expression Programming (GEP) analysis |
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Samadar S. Majeed, James H. Haido, Dawood Sulaiman Atrushi, Yaman Al-Kamaki, Youkhanna Zayia Dinkha, Shireen T. Saadullah and Bassam A. Tayeh
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| Abstract | ||
| Inorganic basalt fiber (BF) is a novel sort of commercial concrete fiber which is made with basalt rocks. Previous studies have not sufficiently handled the behavior of self-compacted concrete, at elevated temperature, containing basalt fiber. Present endeavor covers experimental work to examine the characteristics of this material at high temperature considering different fiber content and applied temperature. Different tests were carried out to measure the mechanical properties such as compressive strength (fc), modulus of elasticity (E), Poisson's ratio, splitting tensile strength (fsplit), flexural strength (fflex), and slant shear strength (fslant) of HSC and hybrid concrete. Gene expression programming (GEP) was employed to propose new constitutive relationships depending on experimental data. It was noticed from the testing records that there is no remarkable effect of BF on the Poisson's ratio and modulus of elasticity of self-compacted concrete. The flexural strength of basalt fiber self-compacted concrete was not sensitive to temperature in comparison to other mechanical properties of concrete. Fiber volume fraction of 0.25% was found to be the optimum to some extend according to degradation of strength. The proposed GEP models were in good matching with the experimental results. | ||
| Key Words | ||
| basalt fiber concrete; GEP analysis; mechanical properties; self-compacting concrete; strength at elevated temperature | ||
| Address | ||
| Samadar S. Majeed: College of Engineering, Nawroz University, Kurdistan Region, Iraq James H. Haido: Department of Civil Engineering, College of Engineering, Univesrity of Duhok, Kurdistan Region, Iraq Dawood Sulaiman Atrushi: Department of Civil Engineering, College of Engineering, Univesrity of Duhok, Kurdistan Region, Iraq Yaman Al-Kamaki: Department of Civil Engineering, College of Engineering, Univesrity of Duhok, Kurdistan Region, Iraq Youkhanna Zayia Dinkha: Department of Civil Engineering, College of Engineering, Univesrity of Duhok, Kurdistan Region, Iraq Shireen T. Saadullah: Department of Civil Engineering, College of Engineering, Univesrity of Duhok, Kurdistan Region, Iraq Bassam A. Tayeh: Civil Engineering Department, Faculty of Engineering, The Islamic University of Gaza, P.O. Box 108, Gaza Strip, Palestine | ||