Strength Prediction of Fly Ash Concrete Using Cementing Efficiency by Statistical Analysis

Abstract:

This paper offers a model that can estimate the 28-day compressive strength of concrete containing fly ash (FA) using the concept of cementing efficiency. Using various statistical analyses, the prediction model was derived from a wide range of mix proportions and a number of strength test results of concretes used in eight construction sites. A strength prediction model was proposed in terms of a function of the modified cement-water ratio reflecting the equations for cementing efficiency. This prediction model that has R² of 0.88 and root mean squared error (RMSE) of 1.6MPa is capable of properly predicting the 28-day compressive strength within strength variation of FA concrete.

• Periodical: Advanced Materials Research (Volumes 374-377)
• Pages: 1774-1777
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.374-377.1774
• Online since: October 2011
• Authors: Hong Bum Cho, Nam Yong Jee, Jun Ho Shin
• Keywords: Cementing Efficiency, Fly Ash (FA), Relative Strength, Statistical Analysis, Strength Prediction

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