| Abstrakt: |
The rapid increase in the world's population has resulted in a shortage of water, especially in developing countries. To conserve fresh water, the utilization of seawater in the concrete industry is being considered as a viable alternative due to its abundance. Additionally, seawater is more easily accessible in coastal regions, which can promote their development. In this study, the effect of using Dead Sea Water (DSW) as a mixing water for concrete was investigated. Several concrete mixes were produced using DSW mixed with fresh water at different percentages of 0, 25%, 50%, 75%, and 100%. In addition, the cement content was also changed between 300 to 350 kg/m3 to produce concrete of different strengths ranging from 30 to 44 MPa. Fresh and hardened properties including the slump, air content, density, and compressive and tensile strengths at different ages between 7 to 90 days were investigated. Compared to the reference mix (0% DSW), the concrete produced using DSW provided lower slump values, higher air contents of up to 20%, and lower density of up to 17%. The compressive strength and splitting tensile strength decreased by 30% to 85% and 15% to 75%, respectively, as the percentage of DSW in the mix increased from 25% to 100%. It was found that the use of DSW in concrete can severely impact its fresh and hardened properties. [ABSTRACT FROM AUTHOR] |
