The Civil Engineering Contractor October 2018 | Page 39

THOUGHT LEADERS
a description of Cellular Concrete
by Lightbuild Technologies’ Paul
Drozdov, noting that the technique
had originated in countries
experiencing extreme climates,
First place in the Sarma awards went
to Cretepro, Vryburg (plant operator,
Louis Visser, on left), with Special
Commendation to Erick Makathi of
Cretepro, Vryburg.
Johan van Wyk, director of the Southern
Africa Ready-mix Association (Sarma).
but which even in South Africa had
applicability for filling voids.
Another highlight was the
presentation by Perrie, updating
attendees on the state of Concrete
Standard & Design Codes, where
the country had largely followed
EU and UK standards, tailored to
local conditions. The days of concrete
being “only grey, and its sole function
being to harden” were over, according
to a presentation by Chryso’s Marc
Plancon from France, who showed
the audience how to get the best
out of concrete using its admixtures — including luminous paths. A case
study on the Bosjes Chapen, by Henry
Fagan, was followed by a briefing on
material recycling by GreenCape’s
Kirsten Barnes.
Prof Henk Jonkers of the
Netherland’s University of Delft —
nominated in 2015 by the EU Patent
Office for that year’s Patent of the
Year — gave an account of self-
healing concrete, through the use
of bacteria and nutrients. Carmix’s
Andrea Bonomi from Italy wrapped
up the day with a case study on
mobile batching. nn
Prof Henk Jonkers is the inventor of Self-
Healing Concrete, which was nominated
for EU Patent of the Year 2015. Mobile batching developed in Italy after
the Second World War, where buildings
were completely demolished but roads
and space were tight, says Carmix’s
Andrea Bonomi.
CEC October 2018 - 37