Mechanical activation in the production of lime-sand mixtures
This paper presents a review of the author’s research of the effect of different grinding units’ on the physical and chemical profile and geometry of quartz powders. Thus, when quartz sand is being treated in a vortex layer machine for 3–5 minutes, the mean particle size decreases from 235 to 6–7 μm...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Peter the Great St. Petersburg Polytechnic University
2020-10-01
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| Series: | Magazine of Civil Engineering |
| Subjects: | |
| Online Access: | https://engstroy.spbstu.ru/en/article/2020.98.4/ |
| _version_ | 1819120514176647168 |
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| author | Ruslan Ibragimov Evgeniy Korolev Timur Deberdeev |
| author_facet | Ruslan Ibragimov Evgeniy Korolev Timur Deberdeev |
| author_sort | Ruslan Ibragimov |
| collection | DOAJ |
| description | This paper presents a review of the author’s research of the effect of different grinding units’ on the physical and chemical profile and geometry of quartz powders. Thus, when quartz sand is being treated in a vortex layer machine for 3–5 minutes, the mean particle size decreases from 235 to 6–7 μm, and the maximum size – from 498 to 81–77 μm. In this case, the specific surface area of the quartz powder, determined by the BET method, is 1.14–1.5 times larger than that of the powder obtained in other grinding units. It was shown that only the treatment of quartz sand in the vortex layer machine allows identifying this process as mechanical activation. The same positive results were obtained when treating building lime in the machine. There is an intensification of the building lime hydration process observed. The rational treatment time of the lime-sand compounds mixture in the vortex layer machines is 5 minutes. For compounds obtained from such mixtures at the age of 28 days, an increase in compressive strength by 209 % and bending strength by 172 % is observed. A decrease in the porosity of the compounds by 24 % was also found. Increasing the time of treatment of a lime-sand mixture in the vortex layer machine for more than 5 minutes has shown a slight effect on the physical and mechanical properties of the materials obtained. |
| first_indexed | 2024-12-22T06:21:52Z |
| format | Article |
| id | doaj.art-50da593d623d4b9fb08fae3bf5cf4c98 |
| institution | Directory Open Access Journal |
| issn | 2712-8172 |
| language | English |
| last_indexed | 2024-12-22T06:21:52Z |
| publishDate | 2020-10-01 |
| publisher | Peter the Great St. Petersburg Polytechnic University |
| record_format | Article |
| series | Magazine of Civil Engineering |
| spelling | doaj.art-50da593d623d4b9fb08fae3bf5cf4c982022-12-21T18:35:57ZengPeter the Great St. Petersburg Polytechnic UniversityMagazine of Civil Engineering2712-81722020-10-019869804980410.18720/MCE.98.4Mechanical activation in the production of lime-sand mixturesRuslan Ibragimov0https://orcid.org/0000-0001-8879-1190Evgeniy Korolev1https://orcid.org/0000-0003-0815-4621Timur Deberdeev2https://orcid.org/0000-0003-2714-519XRuslan Ibragimov Affiliation Kazan State University of Architecture and EngineeringNational Research Moscow State Civil Engineering UniversityKazan National Research Technological UniversityThis paper presents a review of the author’s research of the effect of different grinding units’ on the physical and chemical profile and geometry of quartz powders. Thus, when quartz sand is being treated in a vortex layer machine for 3–5 minutes, the mean particle size decreases from 235 to 6–7 μm, and the maximum size – from 498 to 81–77 μm. In this case, the specific surface area of the quartz powder, determined by the BET method, is 1.14–1.5 times larger than that of the powder obtained in other grinding units. It was shown that only the treatment of quartz sand in the vortex layer machine allows identifying this process as mechanical activation. The same positive results were obtained when treating building lime in the machine. There is an intensification of the building lime hydration process observed. The rational treatment time of the lime-sand compounds mixture in the vortex layer machines is 5 minutes. For compounds obtained from such mixtures at the age of 28 days, an increase in compressive strength by 209 % and bending strength by 172 % is observed. A decrease in the porosity of the compounds by 24 % was also found. Increasing the time of treatment of a lime-sand mixture in the vortex layer machine for more than 5 minutes has shown a slight effect on the physical and mechanical properties of the materials obtained.https://engstroy.spbstu.ru/en/article/2020.98.4/aggregatesmortarmechanical propertieshydrationenergy efficiency |
| spellingShingle | Ruslan Ibragimov Evgeniy Korolev Timur Deberdeev Mechanical activation in the production of lime-sand mixtures Magazine of Civil Engineering aggregates mortar mechanical properties hydration energy efficiency |
| title | Mechanical activation in the production of lime-sand mixtures |
| title_full | Mechanical activation in the production of lime-sand mixtures |
| title_fullStr | Mechanical activation in the production of lime-sand mixtures |
| title_full_unstemmed | Mechanical activation in the production of lime-sand mixtures |
| title_short | Mechanical activation in the production of lime-sand mixtures |
| title_sort | mechanical activation in the production of lime sand mixtures |
| topic | aggregates mortar mechanical properties hydration energy efficiency |
| url | https://engstroy.spbstu.ru/en/article/2020.98.4/ |
| work_keys_str_mv | AT ruslanibragimov mechanicalactivationintheproductionoflimesandmixtures AT evgeniykorolev mechanicalactivationintheproductionoflimesandmixtures AT timurdeberdeev mechanicalactivationintheproductionoflimesandmixtures |