Application of magnesium silicate rocks in the production of cements with mineral additives

4th School-Seminar of Young Russian Scientists "Problems of Sustainable Regional Development", dedicated to the 70th anniversary of Academician of the Russian Academy of Sciences Arnold Kirillovich Tulokhonov

自然科学（总论）

Khudyakova, L.I.^1 ; Paleev, P.L.^1

Baikal Institute of Nature Management SB RAS, Ulan-Ude

670047, Russia^1

关键词: Cement production;    Environmental pollutions;    Environmental problems;    High-quality materials;    Magnesium silicates;    Mineral supplements;    Physical and mechanical properties;    Strength characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/320/1/012035/pdf
DOI  :  10.1088/1755-1315/320/1/012035

学科分类：自然科学（综合）

来源: IOP

【 摘 要 】

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.