Reply to the discussion by S. Chatterji of the paper “Electrostatic repulsion between particles in cement suspensions: domain of validity of linearized Poisson–Boltzmann equation for nonideal electrolytes”

Abstract

In this discussion paper, the original authors reply to a comment on their 2003 study of the electrostatic repulsion between particles in cement suspensions. The original authors departed from the usual practice of treating pore solution as ideal and symmetrical electrolytes. Instead, they treated them as noninteger symmetric electrolytes. This has allowed the authors to approach the real world situation more closely. The commentator had asked four questions: What potential should be used to calculate the electrostatic repulsion at the initial stages of hydration? Where should the solid-liquid interface boundary be placed? And how is this interface located? Also, how will the number density of cement hydration products effect the electrostatic repulsion? In this discussion, Flatt and Bowen address each of these questions, emphasizing practical approaches to the concerns raised.