Estimating the original cement content and water – cement ratio of Portland cement concrete and mortar using backscattered electron microscopy

In a previous study, a method was proposed to estimate the cement content, water content, free water–cement ratio (w/c) and degree of hydration of hardened Portland cement pastes that have unknown proportions. The method is based on measuring the volumetric fractions of capillary pores, hydration products and unreacted cement using backscattered electron… CONTINUE READING