Browsing by Author "Kovalchuk O. Yu."

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    Fly ash based alkali activated cements low heat evolution materials
    (1st International Conference on the Chemistry of Construction Materials by the GDCh Division of Chemistry of Construction Materials, 2013-10-07) Kovalchuk O. Yu.; Grabovchuk Valentina; Грабовчак Валентина Валентинівна; Грабовчак Валентина Валентиновна
    Hardening of concrete is supported by heat emission due to the cement hydration processes.Rising of temperature leads to stresses because of irregular heating and cooling so as interna! layers are cooling slowly When a large thermal stresses are occurred in concrete ii is possible to cracks appearance that could decrease strength and durability of concrete. So during thermal balance calculation of concrete hardening special role is given to heat emission /1-2/