Bill, Oleary
Siyasiya, Charles
Moema, Joseph
Article History
Received: 3 June 2021
Accepted: 22 December 2021
First Online: 11 February 2022
Conflict of interest
: The authors declare that they have no conflict of interest.
: The research data for this article are available on the University of Pretoria Bahr Dilatometer machine and the SEM post-processing machine, available on request.