Browsing by Author "Usman, M."
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Item Impact Energy Assessment on Rubber-Tyre Concrete using different Methods on Two- Weibull Parameters(International Journal of Advances in Engineering and Management (IJAEM), 2021-12-12) Ibrahim, A.O.; Adeyemi, F.O.; Umar, Y. K.; Bello, M.; Usman, M.In this study, an attempt was made to investigate the effect of fire on impact resistance of tyre-rubber concrete (TRC), subjected to drop weight test in accordance with the procedure suggested by ACI committee 544. For this, three samples were prepared from each series of mix containing tyre\ fibres of 10 mm width and length in various proportions viz., 0%, 2.5%, 5.0% and 7.5%, with a water cement ratio of 0.55. The results obtained were statistically investigated using Weibull Distribution. The Weibull parameters were determined by three estimation approaches; EPM (Energy Pattern Method), Probability Density Function (PDF) and Method of Moment (MOM). Analysis suggested that the three methods are more effective in estimating the weibull parameters. Though there are less differences. Therefore, designers can choose impact strength design value based on the required reliability.Item Reliability Assessment Of Heated Rubber Tyre Concrete(Journal of Multidisciplinary Engineering Science Studies (JMESS), 2021-04) Ibrahim, O. A.; Usman, M.; Okeke, K.L.; Adeyemi, F. O.; Ibrahim, S. O.In this study, effort has been made to determine the reliability of heated rubber tyre concrete. The rubber tyre concrete (RTC) was subjected to single temperature load in accordance with the procedure suggested by ISO 834 using Constant Failure Rate (CFR) method. For this, twenty-seven (27) samples were prepared from each series of mix containing tyre fibers of 10 mm width and length in various proportions namely; 0%, 2.5%, 5.0% and 7.5%, with water cement ratio of 0.55. In the view of variations of test results, this study therefore explores the use of rubber tyre concrete as an additional constituent in the conventional concrete. The results indicated that incorporating rubber tyre to concrete provides a reliability level of safety.