

37
CONSTRUCTION WORLD
MARCH
2016
transportation as well as its simple installation:
“It was easy to use: we used pruning scissors
to cut it, and cable ties to bind overlaps together”;
it’s not heavy at all so I was able to collect
120 m² from Kaytech in Jhb and roll it up and
carry it on my bakkie with ease” said a represen-
tative from Bold Green.
TriAx provides radial stiffness thus producing
a truly multi-directional product with near
isotropic properties. The use of TriAx on this
project saved both time and money, since any
alternative option would have necessitated a far
deeper excavation of material.
Since TriAx geogrids have proven perfor-
mance in trafficking trials and can reduce base
thickness, increase bearing capacity, control
differential settlement and cap weak deposits,
developer, Atterbury Properties can rest assured
that these repairs at its Lynnwood Bridge Shop-
ping Mall are of the highest quality.
The trouble occurred above the storm-
water services which had been installed
five to six metres deep on the side of
the jockey slab. When DG Consulting Engi-
neers identified insufficient compaction of the
material above the stormwater services,
Kaytech’s tried and tested TriAx geogrid was the
immediate choice.
After removal of 300 mm of the faulty mate-
rial, contractor Bold Green, installed 120 m
2
of TriAx TX 160 subsequently covering it with
imported G5 material. The hexagonal struc-
ture of TriAx geogrid, coupled with increased
rib thickness and junction efficiency, provides
significantly improved aggregate confinement
and interlock, leading to improved structural
performance of the mechanically stabilised
load-bearing sub-base.
With no previous experience using TriAx, the
contractor was greatly impressed with its ease of
SIMPLIFYING GROUND
STABILISATION PROBLEM
Kaytech’s TriAx geogrid has been proven to functionally out-perform
the best performing bi-axial geogrids available, so it was no surprise
that this product was specified to solve a pavement subsidence
problem at the upmarket Lynnwood Bridge Shopping Centre in
Pretoria, Gauteng.
1. Excavating the site.
2. Compacting the base layer.
3. Laying TriAx with overlapping ends.
4. Compacting the surface layer.
5. Laying the paving layer.
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