Construction World June 2023

highly impressive expansion/contraction features of plus 100% expansion, and minus 50% contraction. For example, if a Dowsil joint is 25 mm wide, it can expand 25 mm (12,5 mm on either side) and contract 12,5 mm (6,25 mm on either side),” Trew explains. Major projects for which a.b.e. has already supplied concrete repair and protection products and consultation include: • Grasmere N1 toll road; • Umdloti main road; • N14 Bridges between Hartbeespoort and Lanseria; • OR Thambo concrete aprons and hardstand areas; • Gqeberha airport runway; • Gautrain viaducts; • Fish Water Flats sewage works, Gqeberha; • Kanengo Silo Project, Malawi; • Mondi Chipper plant, Richards Bay; • Omnia fertiliser tank bases, Sasolburg; • Savana City reservoir, Sebokeng, Gauteng; • Northam Plats Mine cooling towers; and • Coal Tippler Project concrete repair, Richards Bay harbour. 

setting gun-grade sealant, particularly used for bridge joint sealing. “Where applicable, these specialised sealants supplied for infrastructural

projects, comply with the global Standard Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (ASTM) and have

23 CONSTRUCTION WORLD JUNE 2023