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Hano, Salwa M. A.
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Civil Engineering, Building, Construction & Architecture

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Examining the Compressive Behavior of SFRC and SCC Using Finite Element and Experimental Methods Hano, Muna M.; Hano, Salwa M. A.; Al-Rawe, Hesham S.
Civil Engineering Journal Vol 11, No 3 (2025): March
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2025-011-03-017

Abstract

The compressive behavior of various kinds of concrete, including plain concrete, steel fiber-reinforced concrete (SFRC), and self-compacting concrete (SCC), was investigated experimentally in this paper and simulated using finite element analysis through ABAQUS software. Thirty specimens were cast and tested with two concrete compressive strengths (20 and 30 MPa). Steel fibers were added at volume fractions of (0, 0.4, and 0.75)%, while SIKA-VISCOCRETE-5930 IQ was incorporated at (0.8 and 1.8)% by weight of cement. The results showed that the compressive strength of the tested specimens increased with the increase of fibers and SIKA-VISCOCRETE-5930 IQ dosages. The FEA results exhibited a good agreement with those from the experimental work in terms of the stress-strain relationships for plain, SFRC, and SCC. A Student's t-test was performed on both experimental and FE analysis outcomes, and the difference among them was found to be statistically insignificant. The accuracy of numerical modeling in predicting concrete behavior under compression is supported by the findings of this study, and the effectiveness of steel fibers and SIKA-VISCOCRETE-5930 IQ in developing the compressive strength of concrete is also highlighted. Doi: 10.28991/CEJ-2025-011-03-017 Full Text: PDF
Fracture Toughness of Fibrous Concrete Incorporated with Treated Recycled Aggregates Hano, Muna M. A.; Hano, Salwa M. A.; Ahmed, Sofyan Y.
Civil Engineering Journal Vol. 11 No. 9 (2025): September
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2025-011-09-016

Abstract

This paper examines the effect of recycled concrete aggregate (RCA) on the behavior of concrete, particularly when combined with different fiber mesh and treatment techniques. Recycled concrete aggregate was treated using two treatment methods. Method 1 used a mix of cement, silica fume, and water, while Method 2 combined cement, silica fume, water, sand, and superplasticizer. Two types of fiber, glass and polypropylene (plastic) fiber mesh, were placed across the expected crack path to study their effect on crack resistance. A total of 24 prisms were cast and tested. Tests measured slump, absorption, unit weight, compressive strength, and fracture toughness. The findings indicate that using recycled concrete aggregate decreases strength and workability compared to normal aggregate. Treated recycled aggregate enhanced the strength, especially in Method 2, which provided compressive strength even higher than normal aggregate. However, fracture toughness decreased due to the sudden formation of cracks. Interestingly, concrete made with untreated recycled concrete aggregate and glass fiber exhibited better crack resistance and fracture toughness. This study compares RCA treated using two different methods and reinforced with two types of fiber mesh, showing that minor changes in the mix design can enhance the behavior of concrete made with RAC.
Co-Authors Ahmed, Sofyan Y. Al-Rawe, Hesham S. Hano, Muna M. Hano, Muna M. A.