Plant Equipment and Hire January 2018 | Page 24

TECHNOLOGY Total Blasting supplies equipment for water jetting and hydrodemolition. Both the T3 and T4 Series units are suitable for the most demanding of applications, as well as for single or twin-gun operations. 22 JANUARY 2018 jetting and hydrodemolition deployed to this project for its duration. The company employed hydrodemolition technology — specifically developed for concrete demolition, and imported from Europe and the US — to remove deteriorated concrete from the structures without damaging existing steel reinforcement. Commissioned by WBHO, in partnership with Sanral, the wider project included the complete rehabilitation of the bridges in Rosebank, involving major structural repairs. When it came to the hydrodemolition aspect of the project, challenges included limited site access (due to the nature of the roadworks and construction), and channelling sufficient water to site to feed the pumps, which was managed by using multiple road tankers to carry the water. “Hydrodemolition is in its infancy in Africa,” says Storer. “The success of this project not only represents a well-respected client that is highly satisfied with the work we have done, but opens up opportunities for hydrodemolition and water jetting in the southern African concrete repair sector.”