Open AccessApplication of magnesium silicate rocks in the production of cements with mineral additives
Author(s) -
L. I. Khudyakova,
P. L. Paleev
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/320/1/012035
Subject(s) - raw material , grinding , portland cement , environmental science , cement , silicate , waste management , mineral , clinker (cement) , environmental pollution , metallurgy , materials science , chemical engineering , chemistry , engineering , environmental protection , organic chemistry
Cement plants are among the main sources of environmental pollution. They emit a huge amount of carbon dioxide into the atmosphere, make a significant contribution to the greenhouse effect. To eliminate this drawback, the enterprises switch to the production of cements with mineral additives. Serpentinites can be used as innovative mineral supplements. These are the magnesium silicate rocks moved to dumps in the process of development of mineral deposits. Their introduction into the composition of cements allows to produce high quality materials. At the same time, their physical and mechanical properties depend on the amount of additives and on the time of grinding the raw mixture. It is shown that the optimal parameters for obtaining cements are: the addition of serpentinite (up to 30 %) with grinding time of 10 minutes. Under these conditions, composite binders have the best strength characteristics. The usage of serpentinites in Portland cement production process will not only expand the list of raw materials for the construction industry, but also solve environmental problems associated with the storage and disposal of mining waste.