Neutron Radiography Study of Laboratory Ageing and Treatment Applications with Stone Consolidants.

ABSTRACT: A nano-silica consolidant and nano-titania modified tetraethyl-orthosilicate were applied on two building stones, a carbonate and a silicate, by brush, poultice or capillary absorption. Neutron radiography was used to monitor capillary water absorption, and to analyse changes in physical properties caused by heat treatment of specimens for the purposes of artificially ageing and different treatment applications with stone consolidants. Moreover, ultrasonic pulse velocity and gravimetrically determined water absorption were analysed to cross-validate neutron radiography. The results reveal that reactive systems like tetraethyl-orthosilicates need an unknown period for polymerisation, which makes nano-silica consolidants more favourable for construction follow-up work. While polymerisation i

SUBMITTER: Ban M 

PROVIDER: S-EPMC6523362 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature