A thesis submitted to the Department of Civil Engineering, Sonargaon University, in partial fulfillment of the requirement for the degree of Bachelor of Science in Civil Engineering

Abstract

Concrete structure has been designed on the basis of strength criteria. The compressive strength of concrete traditionally determined by 28 day’s cured cylinder test and this strength is used in designing concrete structures. A mixer of Sylhet sand was used as fine aggregate and round headed stone chips; angular shape stone chips and brick chips were used as coarse aggregate. After testing the concrete cylinder, the maximum compressive strength was found for 07 day’s cured cylinder 3121.02 psi which coarse aggregate was angular shape stone chips and tensile strength was found for 07 day’s cured cylinder 1099.79 psi which coarse aggregate was also angular shape stone chips. Again, the maximum compressive strength was found for 28 day’s cured cylinder 3596.60 psi which coarse aggregate was angular shape stone chips and the maximum tensile strength was found for 28 day’s cured cylinder 1200.85 psi which coarse aggregate was also angular shape stone chips. We have also found the failure pattern of cylinder made by different types of coarse aggregate. It is observed that the failure pattern of round headed stone chips is Shear, for angular shape stone chips the failure pattern is Columnar and for brick chips the failure pattern is Cone and Shear.