Elastic wave monitoring of cementitious mixtures including internal curing mechanisms

Gerlinde Lefever, Didier Snoeck, Nele De Belie, Danny Van Hemelrijck, Dimitrios G. Aggelis

Onderzoeksoutput: Article

37 Downloads (Pure)

Samenvatting

The mitigation of autogenous shrinkage in cementitious materials by internal curing has been widely studied. By the inclusion of water reservoirs, in form of saturated lightweight aggregates or superabsorbent polymers, additional water is provided to the hydrating matrix. The onset of water release is of high importance and determines the efficiency of the internal curing mechanism. However, the monitoring of it poses problems as it is a process that takes place in the microstructure. Using acoustic emission (AE) sensors, the internal curing process is monitored, revealing its initiation and intensity, as well as the duration. In addition, AE is able to capture the water evaporation from saturated specimens. By ultrasonic testing, differences in the hydration kinetics are observed imposed by the different methods of internal curing. The results presented in this paper show the sensitivity of combined AE and ultrasound experiments to various fundamental mechanisms taking place inside cementitious materials and demonstrate the ability of acoustic emission to evaluate internal curing in a non-destructive and easily implementable way.

Originele taal-2English
Artikelnummer2463
Aantal pagina's14
TijdschriftSensors
Volume21
Nummer van het tijdschrift7
DOI's
StatusPublished - 1 apr 2021

Vingerafdruk

Duik in de onderzoeksthema's van 'Elastic wave monitoring of cementitious mixtures including internal curing mechanisms'. Samen vormen ze een unieke vingerafdruk.

Citeer dit