Abstract
Irreversible strains, measured on pastes of pure calcium silicates which were loaded without drying, dried to 53% rh without loading, or were loaded and simultaneously dried to 53% rh, are correlated with indications of structural changes occurring within the hydrated pastes. These changes are interpreted in terms of microstructural models of the hydrated pastes. It is assumed that irreversible strains are caused only by changes in the “pore component” and the “CSH component.” In young pastes irreversible shrinkage can be explained by a reduction in pores in the range 40–100 Å diameter. In well-hydrated pastes structural changes in the silicate framework of the “CSH component” dominate irreversibility. Microshearing between CSH particles is thought to occur under load. An increase in degree of silicate polymerization bonding occurs on drying, and this increase is greater when drying takes place under load.
Sign-in/Register to access full text options 
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.
