Materials CONSTRUCTION CHEMICALS
Double decker rehabilitation creates safety and jobs The Johannesburg Roads Agency (JRS), in their commitment to provide quality roads that are accessible and safe, decided it was time for one of its major bridges to be rehabilitated. The M1 “double decker” is a highway bridge in Johannesburg, between Newton and Fordsburg, which posed a safety threat to motorists. Sika
T
his R15 million rehabilitation project, with a bridgespan of 1.02 km, was no small task and required the expertise of many specialists. Khato Civils were appointed as the main contractor for the project and assisted by 17 small, medium and micro enterprises. A phenomenal number of 164 people were employed on this rehabilitation process. A well-known construction chemicals supplier, Sika, reports that its product range was Khato Civils’ brand of choice because of its reliability and long life.
78
Trestle-like piers
The bridge consists of two reinforced concrete deck superstructures, one directly above the other, that are supported on trestle-like piers. A variety of the company’s products were specified for structural repairs, structural strengthening and coatings. SikaTop Armatec-110 EpoCem was used as a rebar protective coating in the structural repairs as it is highly effective for corrosion prevention in concrete reinforcing. Also used in the repair process were the supplier’s user-friendly Monotop-615
volume 10 | issue 1 www.tobuild.co.za
TB29_Materials.indd 78
2020/02/23 11:42 PM
