Experimental and Analytical Study of High-Strength Concrete Containing Natural Zeolite and Additives

The study compares the durability of Natural Zeolite with Metakaolin, Silica Fume, and Fly Ash on high-strength concrete. ۳۰۰ concrete specimens were tested for compressive strength before and after an acid attack, modulus of elasticity, water absorption, and rapid chloride permeability. ۵%, ۱۰%, and ۱۵% of the cement were replaced with cementitious elements while maintaining the same quantity of Natural Zeolite. In this investigation, the water-cement ratio was maintained at ۰.۳۵. After ۲۸ days, the specimens were tested for durability. Samples of all mixes were TG/DT and FTIR tested. The optimal percentages of cementitious materials that resulted to the maximum durability enhancements were reported as the study results. Experimental results showed that Natural Zeolite and Metakaolin strengthened the durability of concrete. All the data show that ۵% Natural Zeolite with ۱۰% Metakaolin performs well. Good R۲values and appropriate independent variable coefficients suggested that the regression findings for high-strength concrete durability were accurate. The P values of all models were less than ۰.۰۰۵ and the F values were statistically significant and appropriate; therefore, the generated models predict concrete's strength with authenticity. Doi: ۱۰.۲۸۹۹۱/CEJ-۲۰۲۲-۰۸-۱۰-۰۱۹ Full Text: PDF

کلیدواژه ها:

Natural Zeolite (NZ) ، Metakaolin (MK) ، Silica Fume (SF) ، Fly Ash (FA) ، Durability ، Regression Analysis.