Abstract
This study enhances self-compacting concrete (SCC) properties by adjusting the mix design, reducing the water-to-cement ratio, and adding permeability-reducing admixtures (GGBS, fly ash, silica fume, bentonite). Different admixture proportions were tested to improve mechanical characteristics. Four SCC mixtures were formulated, varying GGBS and fly ash (0-70%) and silica fume and bentonite (0-20%). Auromix 300 plus (0.6% by weight of cement) was used as a chemical admixture. Strength properties (compressive, flexural, split tensile, elastic modulus) were evaluated on specimens cured normally for 28 days, then in NaCl for 56-112 days. Optimal mixtures were found: GGBS 30% for compressive strength, bentonite 10% for flexural and split tensile strength. Results indicate increased strength and reduced porosity by incorporating these materials.
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