Study on Carbonation of Concrete by Two-Phase Compound Law of Cement Paste and Aggregate

Part 1. Derivation of analytic solution of √t law according to Fick diffusion second law

Abstract

Part 1 of this study examined derivation of an analytical solution of √t law according to the Fick diffusion second law. As a result, I set basic equations, boundary conditional expressions and special solutions, then decide the undetermined coefficients in the special solution, then expand the special solution that defines the unknown coefficients and approximation analytical solution of √t law was derived.