TY - JOUR
T1 - Evaluation of self-healing by a combination of ultrasonic measurements and 3D numerical simulations
AU - Lefever, Gerlinde
AU - Okude, Nobuhiro
AU - Shiotani, Tomoki
N1 - Funding Information:
The authors wish to thank the Research Foundation - Flanders ( FWO Vlaanderen ) for the funding received through postdoctoral mandate n° 1299923 N . Also, we wish to express our gratitude to Dr. Alexander Assmann (BASF) for providing the SAP under study and to Yves De Vreese (W. R. Grace & Co.-Conn.) for providing LUDOX® HS40.
Funding Information:
The authors declare the following financial interests/personal relationships which may be considered as potential competing interests:Gerlinde Lefever reports financial support was provided by Research Foundation Flanders.The authors wish to thank the Research Foundation - Flanders (FWO Vlaanderen) for the funding received through postdoctoral mandate n° 1299923 N. Also, we wish to express our gratitude to Dr. Alexander Assmann (BASF) for providing the SAP under study and to Yves De Vreese (W. R. Grace & Co.-Conn.) for providing LUDOX® HS40.
Publisher Copyright:
© 2023 The Authors
PY - 2023/12
Y1 - 2023/12
N2 - Self-healing concrete became an attractive resolution to costly and labour-intensive manual repairs. Up to now, the regain in mechanical performance is generally assessed using destructive tests, which are not suited for in-situ measurements, nor for monitoring purposes. Hence, ultrasound was adopted, combining a non-intrusive character together with a direct correlation to the elastic properties. Ultrasound has shown its potential to evaluate repair and self-healing processes in literature. The wave velocity provides a direct link to the global E-modulus. However, the healing layer cannot be separated from the intact material that is included in the investigated area. Therefore, ultrasonic measurements are combined with 3D numerical wave simulations. Through a comparison between experiments and simulations, an estimation of the elastic properties of the healing layer was performed. Furthermore, a method to evaluate the stiffness and the filling ratio of healed layers within the crack is proposed, based on wave velocity and amplitude.
AB - Self-healing concrete became an attractive resolution to costly and labour-intensive manual repairs. Up to now, the regain in mechanical performance is generally assessed using destructive tests, which are not suited for in-situ measurements, nor for monitoring purposes. Hence, ultrasound was adopted, combining a non-intrusive character together with a direct correlation to the elastic properties. Ultrasound has shown its potential to evaluate repair and self-healing processes in literature. The wave velocity provides a direct link to the global E-modulus. However, the healing layer cannot be separated from the intact material that is included in the investigated area. Therefore, ultrasonic measurements are combined with 3D numerical wave simulations. Through a comparison between experiments and simulations, an estimation of the elastic properties of the healing layer was performed. Furthermore, a method to evaluate the stiffness and the filling ratio of healed layers within the crack is proposed, based on wave velocity and amplitude.
UR - http://www.scopus.com/inward/record.url?scp=85178919083&partnerID=8YFLogxK
U2 - 10.1016/j.dibe.2023.100268
DO - 10.1016/j.dibe.2023.100268
M3 - Article
VL - 16
JO - Developments in the built environment
JF - Developments in the built environment
SN - 2666-1659
M1 - 100268
ER -