MATEC Web Conf.
Volume 230, 20187th International Scientific Conference “Reliability and Durability of Railway Transport Engineering Structures and Buildings” (Transbud-2018)
|Number of page(s)||7|
|Section||Construction Materials, Protection and Repair of Structures and Buildings|
|Published online||16 November 2018|
Alkali activated cements mix design for concretes application in high corrosive conditions
Kyiv National University of construction and Architecture, 03037 Kyiv, Povitroflotsky Avenue 31, Ukraine
2 National Aviation University, 03058 Kyiv, Kosmonavta Komarov Avenue, 1, Ukraine
* Corresponding author: email@example.com
This paper covers the results of development of corrosion resistant ash alkali-activated cements based on regulation of phase composition of the hydration products through changing the alkali content, content of calciumcontaining cement constituents resulting in the increase strength and density of the cement stone. The results of study suggested to conclude that the cement compositions with predominance in the hydration products of weakly soluble low basic hydrosilicates of calcium, hydrogarnets and minerals similar to natural hydroaluminates exhibited the highest corrosion resistance. The results of comparison suggested to draw a conclusion that the alkali-activated cements Types APC III-400 and ACC V-400, according to National Ukrainian Standard DSTU B V.2.7, had high corrosion resistance compared to that of OPC, thus allowing to recommend the developed cements for the concretes intended for use in aggressive environments, inclusive of sodium and magnesium sulphates and others. Coefficients of corrosion resistance of concretes are higher than 1 after even 42 months.
© The Authors, published by EDP Sciences, 2018
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