Evaluating the Quality of Aggregate from a Doubtful Source for Structural Concrete | Chapter 7 | Recent Progress in Science and Technology Vol. 7

 For the result of structural actual, sedimentary rock aggregates are commonly used in Nigeria. It is believed expected one of the causes of many structural declines in the nation by way of its changeable quality, strength, and contaminations. In this study, the character of gravels ranging in magnitude from 8 to 16 mm from Oji River pits was examined. The substance of concrete from the gravels was optimized utilizing Scheffe's simplex method of growth, and the resultant analytical model provided an ideal compressive substance of 11.78 N/mm2 and a mix percentage of 1:1.4:2.5 for a water/cement ratio of 0.53. Because of the littleness of this optimum substance and the predictions of the model, it was urged that such aggregate (8 - 16mm from Oji- River) be restricted to oversite concretes, lines and lintels of buildings with load posture walls and a maximum storey of three; and it shouldn't always be used for slabs of pensile floors, retaining divider, bridges, and culverts.

Author(s) Details:

B .O. Adinna,
Department of Civil Engineering, Nnamdi Azikiwe University, Awka, P.M.B 5025, Nigeria.

C. Chijioke,
Department of Civil Engineering, Federal Polytechnic, Nekede, Owerri, Nigeria.

P. N. Kalu,
Department of Civil Engineering, Federal Polytechnic, Nekede, Owerri, Nigeria.

Please see the link here: https://stm.bookpi.org/RPST-V7/article/view/10032