According to the airport's Twitter account, 80 slabs of fresh concrete have been poured on the runway - but there are still another 200 to go.
With flight numbers still at a fraction of the normal, the airport decided to bring forward maintenance work it had to do on its runway.
The landing zone at the eastern end of the runway had deteriorated and chunks of it were breaking off, leading to temporary closures this year, alarming pilots, disrupting the travel plans of thousands and infuriating airlines.
The airport had budgeted and planned runway pavement replacement work but it was not due to start until the last quarter of this year.
The project will lay 12,000 tonnes of 500mm thick concrete to create the heavy industrial-grade pavement necessary to withstand landings of some of the heaviest and largest aircraft in the world, some with take-off weights of up to 500 tonnes.
The runway will be shortened by 1.1km during the 8- to 10-week construction period.
