The behavior of a slag base pavement structure at P39/1, Erasmia under heavy vehicle simulator loading

An evaluation of unbound slag as a basecourse material using the Heavy Vehicle Simulator (HVS) was undertaken. Two HVS tests were performed on site P39/1 and with these tests it is possible not only to evaluate slag as a basecourse material, but also to compare it with a good quality crushed-stone base. It was felt that these tests would give further information on the possible use of slag as a basecourse material in Category A roads. A description of the HVS tests on this slag base pavement is given. The test results were evaluated using mechanistic analysis techniques. The behavior of the pavement structure is described and analyzed, and dry conditions are compared with wet conditions. Finally, general recommendations are made on the use of high standard slag bases.