With the aim to enable green concretes via the transformation and modification of material structures, HDT has since been used as a very effective GGBS grinding intensifier. Changing the grinding parameters in the mill by reducing power consumption, increasing mill productivity and influencing the properties of the finished product.

1. EVOLUTION IN CONCRETE
“NANOTECHNOLOGY FOR THE CONCRETE AND CEMENT INDUSTRY”

2. Economic forces
The pressure to reduce carbon
footprint in a long term and
sustainable manner
Social forces
While ALL enabling the
preservation and enhancement of
our environment
Technical forces
To meet and surpass the
technical requirements of
modern architecture and
infrastructure
Why now?

3. To enable green
concretes via the
transformation and
modification of
material structures.
And all this needs to be
sustainable and progressive
while still permitting the
most technically innovative
and advanced construction to
go ahead
The HDT idea

4. What is HDT ?
1
A non Hygroscopic
powder of specifically
selected and highly
dispersed natural
minerals with additional
modifications
2
Originally designed to
improve the reactive
performance of all
types of cement and
cement replacements
(including GGBS and
PFA)
3
Permitting more
dense and
economical
concretes to be
designed

5. The development and research
work of HDT admixture for
cement, concrete, mortar and
grout begun in 2006 and was
released as a product towards
the end of 2008.
Conceived and developed by Laszlo and Jevgenyija Formaty, Chemical
Materials and Inorganic Chemistry specialists while working closely with
numerous co-developers, technical personnel and accredited
laboratories in the field of concrete and cement studies.
2012 HDT meets compliance
standard EN 934-2 across various
cement types incl. CEM III/B 32.5 N-
S concrete.
Granted permission &
recommended for use in acid
resistance, frost resistance, density
(reduction of pore volume), chloride
penetration and sulphate diffusion
environments.
2010 started a new direction for HDT to be utilised in clinker grinding
(via CEMKUT Labs). Then from 2013 as a grinding aid for slag.
Since 2013, we’ve carried out on going work on HDT as grinding aid
for slag. Tests were tied to the specific production conditions of very
high temperatures and harsh humidity.
Background

6. Grinding effect can be divided into
two components:
● Changing the grinding
parameters in the mill
○ Reduced power
consumption
○ Increased mill productivity
● Influencing the properties of the
finished product:
○ Nano activated GGBS
HDT-cem - creates a grinding intensifier effect
Crack on surface of a particle of material - 1
HDT-cem molecules - 2
Particle of material - 3
Diagram of
diffusion of
HDT-cem
molecules to
the mouth of a
crack

7. 0,0
0,5
1,0
2,0
HDT
Dosage,
m/m%
5000
4000
3000
2000
1000
~5100 cm /g
2
~4100 cm /g2
Grinding time, hours
Specificsurface(Blaine),cm/g2
0 1 2 3 4 5
Clinker grind results

8. It’s all in the grind
Sample Mill revolutions Blaine
Target 4400 cm2/g
Grinding time
Control 90,000 4350 3 hrs 15 min
HDT 1% 90,000 6250 3 hrs 15 min
HDT 1% 40,000 4680 3 hrs 52 min
Kirton Concrete Services lab mill results (2014)

9. Benefits

10. ● Rapid early strength
● Water resistance
● Reduced permeability and voids
● Improved hydration of concrete
● Lower water requirements
● Lower concrete shrinkage
● Reduction in crack & micro cracking
● Increased flexural & compressive
strength
● Increased uniformity
● Increased resistance to Chloride,
Sulphate & Acid attacks
● Reduced freeze thaw damage
● Resistance to seawater
● Reduced steel reinforcements
Blend features