E3S Web Conf.
Volume 110, 2019International Science Conference SPbWOSCE-2018 “Business Technologies for Sustainable Urban Development”
|Number of page(s)||6|
|Section||Energy Efficiency in the Construction|
|Published online||09 August 2019|
Fine ground granulated blast furnace slag for saving quantity of binder
1 Emperor Alexander I St. Petersburg State Transport University, Moskovskij, 9, 190031, Saint-Petersburg, Russia
2 Saint-Petersburg State University of Architecture And Civil Engineering, 4 Vtoraya Krasnoarmeiskaya ul. 190005, Saint Petersburg, Russia,
* Corresponding author: firstname.lastname@example.org
Nowadays, it is acknowledged that the use of mineral additives based on ground slag is one of ways of resource saving and improvement of technical properties of cement composites. Mineral additives with fineness similar to the Portland cement fineness are often used to replace part of Portland cement. Two kinds of ultra-fine ground granulated blast furnace slag that differ in composition and fineness were studied in the paper. Water-reduction due to effect of super plasticizer in slag-Portland cement compositions with amount of slag up to 70% was studied. The results of reduction of binder quantity per 1 kg of chemical admixture due to significant water-reduction are obtained and analysed. Correlations depending on kind, amount and fineness of slags, as well as depending on mineralogical composition of Portland cement were stated. The ultra-fine mineral additives based on ground slag with high specific surface area can be used for significant reduction of compositional binder.
© The Authors, published by EDP Sciences, 2019
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