Focus Area

Description

Activities

Results

Concrete pavement testing(Hilton)

Apply uni-directional traffic across joints in concrete pavement trial sections.

Evaluate aggregate interlock load transfer efficiency and erosion of subbase

Evaluate steel dowel and aggregate interlock load transfer efficiency and erosion of subbase

Evaluate performance of dolerite and quartzite aggregates

Environmental conditions had a major effect on the concrete slab behaviour.

Severe erosion occurred during trafficking combined with moisture tests.

Moisture Accelerated Distress caused formation of a void underneath the slabs, which affected the pavement behaviour.

Concrete pavement testing (Hilton)

Apply HVS loading to a concrete inlay on the N3 to determine remaining life of a conventionally trafficked section.

Determine the remaining life of a concrete inlay to estimate need for rehabilitation.

The concrete inlay still has a substantial remaining life - no discernable damage was done to the section during the test that was equal to approximately 6 years of typical traffic for the section.

Test experimental pavement under a range of high loads and wet conditions.

HVS tests 426A5 to 436A5

Title

Report No

Author(s)

Date of Issue

1. First level analysis report: HVS testing of the concrete test sections on the N3 near Hilton: tests 421A5 to 423A5

1. CR-2004/43

1. Brink, A.C. and Du Plessis, J.L

1. 2005