Belgium is a large user of concrete for the construction of roads and building structures.
As such, the National Research Centres take interest since a long time in the problem of freeze concrete aggression in contact with or without deicing salts.
The project goal is to classify the freeze-thaw resistance of concretes manufactured with BENOR cements.
This comparative study will be achieved with the help of three test methods:
- The Slab-Test (reference test method of the CEN/TS 12390-9) and the ISO-DIS 4846 (most currently used in Belgium): measurement of scaling in presence of the combined action of freeze-thaw cycles and deicing salts.
- The CEN/TR 15177: measurement of mechanical performance loss after the exposition to certain number of freeze-thaw cycles (freeze: cooling in air; thaw: warming up in water.
The concretes with and without air entertaining agents will be studied by the three test methods. We will also evaluate the carbonation influence (curing of concretes before the test) on the resistance to freeze-thaw;