Abstract
Lightweight concrete with basaltic lapilli as an aggregate is commonly employed in the Canary Islands to manufacture prefabricated blocks. The high porosity of this aggregate provides blocks with low density and good acoustic and thermal insulating properties. However, these properties are the source of moisture condensation inside the block, compromising the building comfort. For these reasons, the pore network by means of dielectric spectroscopy, mercury intrusion porosimetry and hydraulic conductivity is analyzed. The electrical conductivity of the concrete block is measured and used to describe the porosity and pore connectivity factor using a modified form of Bergman equation that considers two conducting phases. Besides, hydraulic conductivity is also measured by a falling head permeability cell, finding a correlation between the liquid permeability and its predicted value by the Katz–Thompson equation. From these studies the measured parameters (porosity, tortuosity, hydraulic and electrical conductivity) are related to the pore network parameters (connectivity and permeability).
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.
