Małgorzata Lelusz
Czasopismo Techniczne, Budownictwo Zeszyt 1-B (5) 2014, 2014, s. 5 - 11
https://doi.org/10.4467/2353737XCT.14.077.2527Cement concrete is one of the most versatile building materials ever created. More and more often, microfibers and polymer or carbon nanofibers are added to concrete mix, causing beneficial changes in material properties. Nanotechnology, has only recently found its way into practical building applications and building materials, including concrete. The technological guidelines for the preparation of cement composites containing carbon nanoparticles are presented in the paper. The results of laboratory research concerning the impact of carbon nanotubes on the compressive strength of cement mortar is also discussed in this work.
Małgorzata Lelusz
Czasopismo Techniczne, Volume 8 Year 2017 (114), 2017, s. 129 - 142
https://doi.org/10.4467/2353737XCT.17.135.6886International agreements oblige our state to develop ecological sources of energy, one of which is biomass. During its combustion fly-ashes are produced. Several studies have shown that they might be useful in concrete production. The article presents a comparison of biomass fly-ash and coal fly-ash influence on the properties of cement composites. The replacement levels of cement by fly-ash (FA) were 20%, 40% and 60%. Biomass fly-ash FA(B) have replaced coal fly-ash by 0%, 50% and 100%. The compressive strength tests showed similarities in strength development of coal and biomass fly-ashes concretes. Specimens with biomass fly-ash presented similar or better abrasion resistance comparing to coal fly-ash samples.