High Efficiency Concrete Containing Micro and Nano-Sized Particles
Riga Technical University 53rd International Scientific Conference: Dedicated to the 150th Anniversary and the 1st Congress of World Engineers and Riga Polytechnical Institute / RTU Alumni: Digest
2012
Genādijs Šahmenko,
Inna Juhnevica,
Diāna Bajāre,
Gundars Mežinskis,
Aleksandrs Korjakins,
Nikolajs Toropovs
Technology of high efficiency concrete provides for use of
ultra-fine micro and nano-sized admixtures which
considerably improve properties of fresh and hardened
concrete. In the frame of this study the concept of high
efficiency concrete provides for two basic directions:
1. Creating ecologically effective concrete mixes with low
cement content (<330 kg/m3) for conventional application
(mass concrete etc).
2. Creating concrete having high compressive strength
(>100MPa) and high performance characteristics allowing
producing thin light-weight bearing elements. (HPC –High
Performance Concrete, UHPC –Ultra High Performance
Concrete).
The basic principles for obtaining high performance
properties are low water/cement ratio and dense micro
structural packing achieved by using special pozzolanic
admixtures which chemically react with calcium hydroxide
and form calcium silicate-hydrate. Silica fume is the most
popular commercially available pozzolanic micro filler based
on silicium dioxide. Pyrogenic silica having nano-sized
particles (<100 nm), has been elaborated recently.
Atslēgas vārdi
high efficiency concrete, ultra high performance concrete (UHPC), pozzolanic admixture, nano silica, Sol-gel method
Hipersaite
http://scientific-conference2012.rtu.lv/sites/default/files/pdf/RTU_Conference_2012.pdf
Šahmenko, G., Juhnevica, I., Bajāre, D., Mežinskis, G., Korjakins, A., Toropovs, N. High Efficiency Concrete Containing Micro and Nano-Sized Particles. No: Riga Technical University 53rd International Scientific Conference: Dedicated to the 150th Anniversary and the 1st Congress of World Engineers and Riga Polytechnical Institute / RTU Alumni: Digest, Latvija, Riga, 11.-12. oktobris, 2012. Riga: RTU, 2012, 372.-372.lpp. ISBN 978-9934-10-360-5.
Publikācijas valoda
English (en)