| PRODUCTS |
HIGH-PROFILE INDUSTRIAL SEALANTS Joint sealants and auxiliary products supplied by abe Construction Chemicals, part of the Chryso Southern Africa Group, have recently been specified for several high-prof ile projects in Gauteng and KwaZulu-Natal (KZN). Firstly, Dowsil 890-SL silicone joint sealants, for which abe is the sole South African distributor, was specified as sealant of the external concrete hardstand area at DSV Park, a massive new warehouse complex near OR Tambo International Airport in Kempton Park for the major logistics company, DSV South Africa. Dowsil (formerly Dow Corning), which produces its wide range of acclaimed sealants in Belgium and the USA, is widely recognised as a global leader in its field. For the construction of DSV Park, Dowsil 890-SL sealant was applied by abe-approved applicator, Safrispec, to the joints at an external concrete hardstand area of about 150 000m 2 . A total of 65 000 linear metres of the highly-regarded sealant had to be applied between 200mmthick concrete surface panels that cover 2 300m 2 , says Jeandré Myburgh, abe technical sales consultant, based at the company’s Boksburg head office. A mong the sealant’s features that
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PRECAST | ISSUE FOUR | 2021
inf luenced its selection by specifying engineers, MV W Consulting and the f loor i ng cont r actor, RCR F loor i ng Applications, are: • Self-levelling. • Movement capability of 100% for extension and 50% compression. • UV stability and weather-resistance. • Flows into irregular joint widths and does not require special application tooling. • No heating or special preparation required. • Short skin-over time of an hour or even less at standard conditions. • Dowsil’s 15-year warranty on the 890SL’s performance. Jeandré says abe also supplied various sizes of ultra-f lex ible abe dura.cord preformed joint filler, (manufactured from low-density, closed cell polyethylene), which form part of the material to seal the concrete joints. T he ma in cont ractor for t he construction of DSV Park, completed in March this year, was WBHO. Dowsil 890-SL was also among the products supplied by abe for repairs to existing joints and sealants at the Gautrain Midrand bus depot. Grant Furrows, abe
technical sales consultant, who collaborated with Myburgh for this project, says the sealing of about 40 000 linear metres was required for this project, being handled by Con-Solve Civils and scheduled for completion in November 2021. “Abe is also supplying dura.rep FMC cement-based concrete grouting for the joint repairs at the bus depot. This popular product is non-shrinking, with aggregate a nd add it ive content t hat prevent s segregation during application, as well as improved strength and low permeability,” (Top): DSV Park. (Above): Gauteng Bus Depot joints repaired and sealed.
