The Namur Test Road Behavior of Various Types of Contraction Joints After 17 Years of Traffic

This article describes the behaviour after 17 years of service of the test sections constructed in 1979 on State road N 4 in the Belgian province of Namur. The object of this experiment, is to compare various types of contraction joint on the same site and under the same conditions of climate and traffic: dowelled or undowelled joints, sealed or unsealed joints, and slabs of variable length-some of which were given an extra width.