Koekelberg Basilic - 01.018
Program
Research into the degradation process of the terracotta elements, followed by the complete restoration study.
Concept
The architect Albert Van Huffel designed the concrete structure of the Basilica to be cast in terracotta elements. He particularly liked the technical properties of terracotta as well as its natural golden tint. After hardening these terracotta elements and the concrete had to behave like one material. Analysis showed that the origin of the problems could be found in the large temperature fluctuations in the building, especially during the period in which the basilica had remained open to the sky. At present the temperature is kept constant. Calculations in the terracotta and in the concrete of the central core show that the main and irreversible cause of degradation is the long term shrinking of the concrete.
By replacing the mortar joints by supple ones, the forces are redirected to the central core.
Specific features
Laboratory tests in order to determine the terracotta properties. Measurements of temperatures and cracking with extension-meters. Religious services were continued throughout the works.
