When concrete work began on Eskom’s Kusile power station in 2009, Ash Resources, South Africa’s leading fly ash supplier, committed to delivering classified fly ash to five different companies and operating sites servicing the main contractor, Kusile Civil Works Joint Venture (KCW JV). It seemed a challenging undertaking but it has in fact worked out extremely well.
The company’s highly experienced logistics team, in combination with an excellent transporter, has been giving a flexible, responsive delivery service to the five batch plants: the KCW JV itself; 3Q Mahuma Concrete; Crocodile Readymix; Franki Africa, and WBHO.
Ash Resources ensured that none of the plants ran out of fly ash, even if a plant had to cope with unanticipated high demands.
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Kusile power station is being constructed using environmentally-friendly concrete incorporating the classified fly ash, DuraPozz®Pro, from Ash Resources’ Matla Plant. In this respect, Kusile is following in the footsteps of Medupi, which was the first Eskom power station constructed using a fly ash concrete mix.
To date, Ash Resources has delivered over 180,000 tons of DuraPozz®Pro and although the peak period of concrete structural work is now over, the KCW JV will continue to require fly ash up until 2016, when equipment installation will be the primary activity.
However, additional projects are already under way, including a coal stockyard and an environmental control catchment dam for water runoff. The completed power station will require in excess of 600,000 m3 of concrete – equivalent to four Cape Town soccer stadiums!
Incorporating DuraPozz®Pro fly ash in the concrete mix design produces a denser, more durable hardened concrete, consistent with the power station’s design life of a minimum of fifty years.
Consistent high quality fly ash has also become a standard ingredient for helping to control the heat of hydration in mass concrete pours, as well as creating mixes with excellent workability and flowability.
These were particularly important factors when much of the concrete had to be pumped in order to deliver the required volume rate on the very congested Kusile site, and then disperse through high density reinforcing without segregation or settlement.
“We focus on total supply reliability to our customers regardless of the size of the project,” says Ash Resources’ MD, Tshepiso Dumasi. “We are proud to be supplying fly ash to the massive Kusile power station – a project that is vital for South Africa’s future economic growth.”
Ash Resources has delivered over 180 000 tons of fly ash
for the construction of the Kusile power station project.
More information from, Natalie Johnson, Tel:+27(0)116572320/www.ashresources.co.za
