Water penetration under pressure

The tightness of concrete under high water pressure is important for under water concrete structures, or concrete in contact with ground water. Water penetration depth under controlled pressure can be determined in two water penetration test stands.

Figure: Water penetration test stand with concrete cubes installed for testing

Frost and freeze-thaw resistance

Specimens are exposed to controlled temperature cycles in a climate chest. Different temperature profiles and storage media liek water or salt solution can be chosen depending on the requirements. The resulting outer damage is measured gravimetrically as scaling. The inner damage is determined by using  ultrasonic measurements and evaluating Young's modulus.