Modeling Concrete Compressive Strength and Strain Development Modified With Variation of Fly Ash and Superplasticizer as Partial Replacement

Eluozo SN and Dimkpa K

Published on: 2021-11-10

Abstract

The study purpose of this Study is to monitor the growth rate of compressive strength and strain from modification of concrete partially replace cement with fly ash and superplasticizer, the study express the behavior of compressive and strain under the influences of these two addictive, the study figured out the relative effect of the addictive influence on the compressive strength and strain of the model concrete based on their effects in different dimensions. It has also provided the platform whereby the strain and compressive strength can be monitored considering some predominant influence from concrete characteristics such as void ratios, porosity and water cement ratios. These are reflected on the variation of strain and compressive strength growth rates as it is expressed from the figures, linear trend were observed, but variation of concrete strain and compressive strength were also experienced in various figures, the study observed the behavior of strain in concrete, such subjection of stress are through an applied load that generates cracks on concrete, when tensile strain exceed its capacity. This behavior are reflected on the compressive variation observed from the results, Measuring the deformation of these materials is through the applied load as it reflection on the behavior of strength development from the target model concrete, the study has experienced strain behavior on concrete when combined with materials characteristic modulus. These condition were observed on the study through the developed model modified with fly ash and super plasticizer, the results express how these parameters affect strain and compressive strength from mixed designed concrete, predictive values were simulated analytically to determine the strain and compressive strength  at every seven days of curing , this were to monitor concrete strain strength development on the model concrete as it increased within seven days of curing  to the optimum values recorded at ninety days, predictive values were subjected to validation, and both parameters generated best fits correlation.