NANOMODIFIED PORTLAND CEMENT COMPOSITIONS WITH ALKALINE ACTIVATION
Ulyana MARUSHCHAK1, Myroslav SANYTSKY1, Taras MAZURAK1, Yurii OLEVYCH1
1National University ”Lviv Polytechnic”, Ukraine
DOI: https://doi.org/10.17512/bozpe.2016.2.09
Article (PDF)
KEYWORDS
nanomodification, rapid hardening Portland cement compositions, ultrafine supplementary cementitious materials, alkaline activation
TOPICS
Energy-efficient construction, Building materials
ABSTRACT
This paper deals with design of rapid hardening Portland cement compositions modified ultrafine mineral additives, polycarboxylate type superplasticizer, alkalicontaining activator. Nanoparticles relating to microheterogeneous systems are characterized by high values of specific interfacial area and “excess surface energy” and promote more complete synergic effect of other components activity. The possibility of increasing of liquid phase alkalinity due to interaction of sodium sulphate and calcium hydroxide in the presence of such ultrafine aluminium containing additives as metakaolin was established.