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Kaolinite clays calcination products and their impact on opc hydration [] / Ts. Erdenebat, B. Uuriin Tsolmon, O. Galaa, B. D. Lygdenov // Проблемы механики современных машин : материалы 7 Международной научной конференции (25 – 30 июня 2018 г.) / отв. ред. В. С. Балбаров. - Улан-Удэ : Издательство ВСГУТУ, 2018. - Т. 2. - С. 253-262. - Библиогр. в конце ст.
Рубрики: Строительство--Строительные материалы
Кл.слова (ненормированные):
строительные материалы -- метакаолин -- каолинитовая глина -- кристаллизация -- продукты гидратации -- прочность при сжатии -- пуццолан -- портландит -- ВСГУТУ
Аннотация: This experimental investigation has been carried out to obtain highly reactive metakaoline (MK) from KhongorOvoo and TsogtOvoo kaolins of Mongolia and confirm their effects as Pozzolan admixture for the mechanical properties and the hydration process of the Portland cement paste. It was done within research project for advanced level at NUM (National University of Mongolia). Pozzolan admixture is the most effective way to concrete paste mix design to reduce the use of primary materials and CO emission, and obtain high strength and high performance concrete at the recent days of preferring green and low carbon technology for resource consumption of innovation driven-development. Despite such a fly ash, silica fume, ground granulated blast furnace slag, calcined clay etc. is used as well-known cementitious materials in high developed countries for production of higher compressive cement, each deposit’s kaolin has specific properties depending on its mineral and chemical composition to influence the cement paste. The natural and thermally treated kaolins for various temperature and duration time in lab muffle furnace were tested by chemical, mineralogy, petrographic, FT-IR, DTA, X-ray fluorescence and X-ray diffraction analyses for checking the phase composition. The effects of these MK as Pozzolan admixture by 5, 10, 15, 20 and 30% for the properties of the cement paste were tested by FTIR, XRDA, DTA, the fineness with 95.6% by passing of #200 sieve, setting time and compressive strength for 1, 3, 7, 28 days compared to local produced OPC 42.5 as reference from Khutul Cement LLC of Selenge province in Mongolia. The hardened cement pastes were tested by DTA for Ca(OH)2 content, FT-IR, XRD and optical microscopic analyses for crystalline hydration products. Compressive strength of the blended cement pastes as containing 20% of Pozzolan admixture as the MK and Portland Cement were higher by 280kg/cm3 in averagethan that OPC tested at all durability ages up to 28 days. The setting time of blended cements with the Pozzolan admixture of MK exhibited the decrease of mortar workability depending on its composition and its increase of chemical reactivity due to their effect on speed up the hydration and hardening process of it.

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Доп.точки доступа:
Балбаров, В. С. \отв. ред.\; Erdenebat, Ts.; Uuriin Tsolmon, B.; Galaa, O.; Lygdenov, B. D.

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    Bilgaev, A. V.
    Modernization of the socio-economic system of the Baikal region based on green development mode [] / A. V. Bilgaev // Моделирование развития социально-экономического потенциала территории в условиях современных вызовов : материалы международной научно-практической конференции (Улан-Удэ, 20-22 сентября 2018 г.) / науч. ред. И. В. Антохонова. - Улан-Удэ : Издательство ВСГУТУ, 2018. - С. 10-12. - (Байкальские экономические чтения). - Библиогр. в конце ст.
Рубрики: Региональная экономика--Байкальский регион
   Байкальский регион
Кл.слова (ненормированные):
регионы -- sustainable development -- green development -- innovation -- устойчивое развитие -- экологическое развитие -- инновации
Аннотация: This paper considers the prospects of introducing the principles of "green" development into the socio-economic system of the Baikal region. Reflects existing problems and offers measures on stimulation and regulation of "greening" of socio-economic system of the region.

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Доп.точки доступа:
Антохонова, И. В. \науч. ред.\

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