Creation of High Strength Concrete Using Local Materials

Alhussin F. Aliwan; Waled F. Alnaas; Nurdeen M. Altwair; Jamal H. Elmapruk

المؤلفون

Alhussin F. Aliwan Department of Civil Engineering, Faculty of Engineering, Elmergib University, Khoms, Libya مؤلف
Waled F. Alnaas Department of Civil Engineering, Faculty of Engineering, Elmergib University, Khoms, Libya مؤلف
Nurdeen M. Altwair Department of Civil Engineering, Faculty of Engineering, Elmergib University, Khoms, Libya مؤلف
Jamal H. Elmapruk Department of Civil Engineering, Faculty of Engineering, Elmergib University, Khoms, Libya مؤلف

الكلمات المفتاحية:

High strength concrete، Compressive strength، Super plasticizer، Silica fume

الملخص

The present study aims to investigate the feasibility of creating high strength concrete (HSC) utilizing local resources. HSC mixture ratios were created with regional resources to increase affordability for a broader range of uses. The practical program was divided into two parts. The objective of the initial section was to create HSC without silica fume by utilizing sand from two different sources, Zliten and Algable Algurby. To enhance the workability of the fresh concrete, various ratios of superplastizer were combined with a low water-cement ratio (w/c). The findings indicated that the greatest compressive strength occurred with w/c ratio of 0.35 and superplasticizer of 1.8, achieving 52.6 and 63.7 MPa at 28 and 90 days, respectively. The objective of the second phase was to produce HSC by utilizing materials found locally along with silica fume, with varying percentages of 15, 20, 25, and 30% utilized as substitutes for cement. The findings showed that the application of silica fume significantly enhanced the compressive strength at later stages. The highest compressive strengths achieved were 93.5 and 97.6 MPa for HSC containing 25% silica fume as cement replacement materials, recorded at 28 and 56 days, respectively.