Structure and properties of the cement stone modified by ultradispersed quartz waste

16th International Conference of Students and Young Scientists "Prospects of Fundamental Sciences Development"

自然科学（总论）

Darulis, M.A.^1 ; Kuznetsova, I.N.^1 ; Kosach, A.F.^1

Yugra State University, Khanty-Mansiysk

628012, Russia^1

关键词: Denser structure;    Mechanical milling;    Physico mechanical characteristics;    Physicomechanical properties;    Research results;    Structure and properties;    Ultrafine particle;    Volumetric fractions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/597/1/012032/pdf
DOI  :  10.1088/1757-899X/597/1/012032

学科分类：自然科学（综合）

来源: IOP

【 摘 要 】

The paper scrutinizes the application of an ultradispersed filler from activated quartz waste as a modifier of cement stone and resulting physicomechanical characteristics of the latter. The deliverables justify the addition of the ultradispersed filler to cement stone in production of cement concrete. The physicomechanical characteristics of quartz-cement stone after dry and wet activation are given. Goal: the goal of the present work is to study the physicomechanical properties of the cement stone modified by ultradispersed quartz filler. Methodology: mechanical milling is used to get ultrafine particles. Research results: the research establishes that the effective ratio of ultradispersed activated quartz to cement is 30:70. The application of the ultrafine filler based on activated quartz waste allows increasing the density by 7%, strength by 35% and lowering the heat conductivity by 16%. Practical use of results: the work proposes a method for producing cement stone with augmented physicomechanical properties using quartz waste in the amount of 30% in total cement volume. Value: the work scientifically justifies the possibility to produce cement stone under hydraulic activation with denser structure with the major volumetric fraction of the filler represented by quartz waste particles with dimensions less than 20 μm.