Construction World October 2017

bidim A2 laid over the compacted clayey subgrade.

combined with a suitable aggregate, through aggregate confinement and interlock TriAx produces a mechanically stabilised layer with exceptional performance. Manufactured in Kaytech’s ISO 9001 accredited facility in Atlantis, Cape Town, bidim is a continuous filament, nonwoven, needlepunched geotextile that meets the most stringent civil engineering and industrial specifications. Over the last decade, by processing over 26 million kilogrammes of high-grade polyester (from discarded cooldrink bottles), Kaytech is able to manufacture eco-friendly,

A-grade bidim from 100% recycled material. Through the years, bidim has remained the best, general-purpose geotextile in Africa. An initial separation layer of bidim A2 was laid onto the clay subgrade and then covered with TriAx Tx 160 which through its unique mechanically stabilising function effectively reduces the amount of rockfill required to provide adequate load support. The rockfill layer was then overlaid with bidim A2 to separate the rockfill and selected layers above, thus also creating a drainage layer whereby water can pass through the rockfill without

influencing the selected layers. Upon completion of the project, the contractor, KTS General Trader had installed 8 568 m 2 of bidim A2 (equivalent to over 25 000 recycled plastic cooldrink bottles) and 9 520 m 2 of TriAx TX 160. Having no prior experience in TriAx installations, the contractor undertook a brief training session from Kaytech, and installed the product with great efficiency, allowing further construction of the road to continue. This was an extremely economical project that proved highly beneficial to the Moretele Local Municipality. 

35

CONSTRUCTION WORLD OCTOBER 2017