title: Portland cement: pseudomorphs of original cement grains observed in hardened pastes.
abstract: Scanning electron micrographs show that a hydration product forms inside the anhydrous cement grains and forms a pseudomorph of the original cement grain. The originally water-filled space between the grains is partially filled with calcium hydroxide crystals that appear to be responsible for the strength of the cement paste.
authors.forename: R B
authors.initials: RB
authors.lastname: Williamson