DIGEST 2006 - Sabita

A total of 95 000 tons of FT
wax-modified asphalt was laid
without a single failure, working at
night in adverse winter conditions
and with minimal disruption of
traffic.
Storage stability
It was noted by National Asphalt
that FT wax modifier is easily
blended and yields long storage
stability. Due to the lower mixing
temperatures required, energy
savings were also realised, and an
extended construction window was
achieved as a result of the
reduced temperature at which the
desired compaction could be
achieved.
References
1 – Dr. T. Butz: Laboratory
report. Sasol Wax, 2006
2 – Dawie Erasmus, Vela VKE:
Night time rehabilitation of the
Southern Freeway (M4) Durban –
Civil Engineering, July 2005, Vol.
13, No. 7, 3.
3 – Ingenuity solves surfacing
problem – Modern Asphalts,
February 2006
Acknowledgements
The authors extend their gratitude
to J Figueroa, S Yin and C Brady of
the RTA NSW Australia,
G.Hennessey, R.Crabb and
J.Burton of Boral Asphalt,
Australia, and to Wynand Nortje of
National Asphalt, South Africa, for
their valued input.
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