Abstract
Set Portland cement consists of a ‘gel’ phase of calcium hydrosilicates with smaller amounts of crystalline and amorphous calcium hydroxide and crystalline calcium aluminate hydrate salts together with unhydrated cement clinker minerals. Electron-optical studies of single stage carbon replicas of fracture surfaces of set Portland cement pastes show that the calcium hydrosilicates formed at low water-cement ratios, e.g. 0.25, are of a fine plate-like nature with a few fibres in the pores; an increase in water-cement ratio brings about an increase in the porosity and an increase in the fibres formed in the pores. The compressive strength falls with an increase in water-cement ratio because of the increase in porosity.
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
