KARIBA DAM PLUNGE POOL REHABILITATION
Jobsite description
The world-class project at Kariba Dam will see the building of a temporary cofferdam downstream of the main wall, allowing the deep plunge pool to be drained, reshaped and stabilized. This will reduce the backward scour in the pool, created by water released by sluices in the dam wall; the concern is that this scouring is edging towards the dam foundations.
Among the range of Chryso solutions provided by Mart Solutions is Chryso®Omega 162 superplasticizer, which is an important component of the concrete mix design for the seven piers. These large pier structures will range from 250 tons to 700 tons in weight. The first of these, currently under construction, will measure 5,5 metres tall when complete.
Chryso Expertise
Chryso®Omega 162 reduces the need to add extra water, and so increases the durability of concrete. This admixture also improves cohesion and lowers viscosity in the concrete mix, leading to improved homogeneity and superior off-shutter finishes.
Facilitating the release of formwork from the concrete piers is Chryso®Dem S, a versatile mould-release oil for timber or steel.
PRODUCTS USED
- Chryso® Aquabeton ZA
- Chryso® Omega 162
- Chryso® Fuge B
- Chryso® Dem S
- Duralatex
- Duragrout
Project participants
Client: Zambezi River Authority
Contractor:Razel-Bec
Chryso Product Supplier: Mart Solutions
Other references
THE EZIMBOKODWENI BRIDGE
VAL DE VIEW BERG RIVER BRIDGE
A range of CHRYSO products contributed to the success of a bridge project near the historic city of Paarl in South Africa, involving the largest precast beams cast to date in the Western Cape.
VLAKFONTEIN RESERVOIR
In November 2020 started the construction in South Africa of the Vlakfontein reservoir in Benoni, Gauteng. The circular post-tensioned reservoir, which will store 213.4 million litres of potable water, is the country’s largest cylindrical post-tensioned concrete reservoir, one of the biggest in the world. Due to its enormous size, it may also be classified as a dam.