Unsupported browser

For a better experience, please update your browser to its latest version.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

Technology transfer benefits Durban port development

Use of French expertise has helped Keller’s South Africa-based business Franki Africa deliver ground improvement work for a major new port development.

Ground conditions at a former race course meant that piled foundations were not suited to development of the 37ha Clairwood Logistics Park in Durban.

Franki worked with its parent company to solve the problem columns with mixed moduli (CMM) and has now successfully installed more than 46,000 columns to depths of up to 38m at the site.

“Working closely with the client, we started our investigations. We initially looked at traditional piling, but this wasn’t financially feasible due to the depths required,” said Franki business development manager Victor Ferreira. “You have to go quite deep to find a competent soil layer and under those soft, compressible clays we would have had to use casings, which would have made the production slow and expensive.

“We spoke to our Keller colleagues in Germany to explore other options, such as stone columns and deep-soil mixing, before deciding on CMM. With this technique, you can vibrate the tube in very quickly, pour in the concrete and then lift the tube out – it’s around three times quicker than traditional piling methods.”

Equipment was brought in from France and Poland and supervision expertise from France to deliver the scheme.

 

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Links may be included in your comments but HTML is not permitted.