Improved Compressive, Tensile and Flexural Strength of Non-Reinforced Specimens and Reinforced Beams Including Zeolite

In recent years the natural zeolite as a supplementary cementitious material (Ahmadi, Shekarchi, 2010) and natural zeolite as construction materials were used in different countries and for different special concretes (Feng, Peng, 2005; Türkmen, Aydin, 2010; and Uzal, Turanli, Mehta, 2007). In the present paper, results of experimental investigations on using zeolite and silica fume as two pozolane materials in concrete mixes at two different cases of separately and mixed together and their effects on compressive, tensile and flexural strengths are presented. In this research program, experimental study was followed by selecting and designing eight different concrete mixes containing constant water-cement ratio equal 0.5 with reference mix without any mineral material. Then zeolite and silica fume were added separately and mixed together to concrete replacing with percentage of cement weight. Zeolite with three percent of 5, 10, 15 percent and silica fume with 7% were considered. Two different mechanical and structural specimens were casted, 48 compressive cubic and 24 tensile strength cylinder and 24 non-reinforce flexural strength beams as mechanical specimens were cast. And also 8 structural reinforced beam specimens were cast based for measuring flexural capacity.