@article{
author = "Kragović, Milan M. and Ristić, Nenad and Gulicovski, Jelena J. and Nedeljković, Andrijana and Pašalić, Snežana and Ristović, Ivica and Stojmenović, Marija",
year = "2021",
abstract = "The presented study is a continuation of the research with the aim of finding a useful
value of hazardous waste slag generated by the combustion of lignite in heating plants and its
application in the construction industry. The different amounts of cement (10%, 15%, 20% and
25%) were replaced with waste slag and silica fumes in mortars and concrete production. Detailed
physical–mechanical characterization was performed on the mortar and concrete samples according
to standard procedures. Test results indicated that the replacement of cement with slag and silica
fumes reduces the physical and mechanical properties of mortar and concrete, but cement composites
retained the required structural properties. If 15–20% is considered an acceptable level of compressive
strength decrease, then it can be concluded that waste slag can be implemented in practice and be
used as a construction material, with cement replacement in the maximal amount of 20% (17.8%
of slag and 2.2% of silica fumes). On hardened mortar samples with maximal possible cement
replacement (20%), physical–chemical characterizations were performed and included X-ray and
infrared spectrophotometry, scanning electron microscopy, and thermal analysis. Results showed the
absence of new phases and the presence of only those which were characteristic for starting samples,
predominantly portlandite, quartz, calcite and calcium silicate-oxide",
journal = "Minerals",
title = "Application of Lignite Combustion Waste Slag Generated in Heating Plants as a Partial Replacement for Cement. Part II: Physical–Mechanical and Physical–Chemical Characterization of Mortar and Concrete",
doi = "10.3390/min11090925"
}