Abstract
The influence of gypsum (G) and anhydrite (A) on the strength and hydration of ordinary Portland cement (OPC) has been investigated. Under an initial steam-curing condition (65 °C × 4 h), optimum SO3 contents of both samples were found rising to 4–5% SO3 and a higher optimum strength was gained with anhydrite as the retarder. Tests show that compared with Sample G, Sample A has higher non-evaporable water content, higher Ca(OH)2 content, less pore volume and lower average pore diameter. Pore solution analyses show that it's the higher [SO42−] and lower [OH−] concentrations in Sample A that result in the above differences.
Full Text
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call