Next Article in Journal
Magnetic Properties and Morphology Copper-Substituted Barium Hexaferrites from Sol-Gel Auto-Combustion Synthesis
Next Article in Special Issue
Implementation of Alternative Mineral Additives in Low-Emission Sustainable Cement Composites
Previous Article in Journal
Design and Evaluation of an Ultrahigh-Strength Coral Aggregate Concrete for Maritime and Reef Engineering
Previous Article in Special Issue
Durability of Cement and Ash Mortars with Fluidized and Siliceous Fly Ashes Exposed to HCl Acid Environment over a Period of 2 Years
Article

Calorimetric Studies of Alkali-Activated Blast-Furnace Slag Cements at Early Hydration Processes in the Temperature Range of 20–80 °C

1
Faculty of Civil Engineering, Kharkiv National University of Civil Engineering and Architecture, Sumska Str. 40, 61002 Kharkiv, Ukraine
2
Faculty of Civil Engineering and Architecture, Kaunas University of Technology, Studentu St. 48, LT-51367 Kaunas, Lithuania
3
Scientific Research Institute for Binders and Materials, Kyiv National University of Construction and Architecture, Povitroflotskyi Pr. 31, 03037 Kyiv, Ukraine
*
Author to whom correspondence should be addressed.
Academic Editor: Didier Snoeck
Materials 2021, 14(19), 5872; https://doi.org/10.3390/ma14195872
Received: 7 July 2021 / Revised: 28 September 2021 / Accepted: 4 October 2021 / Published: 7 October 2021
(This article belongs to the Special Issue Research on Novel Sustainable Binders, Concretes and Composites)
In the hydration process of inorganic cements, the analysis of calorimetric measurements is one of the possible ways to better understand hydration processes and to keep these processes under control. This study contains data from the study of thermokinetic processes in alkali-activated blast-furnace slag cements compared to ordinary Portland cement (OPC). The obtained results show that, in contrast to OPC, the heat release values cannot be considered as a characteristic of the activity of alkali-activated blast-furnace slag cements. In addition, it is concluded that in the case of OPC cements, cumulative heat release is a criterion for the selection of effective curing parameters, while in the case of alkali-activated blast-furnace slag cements, a higher heat rate (which increases sharply with increasing temperature from 20 to 40 °C) is a criterion. From the point of views of thermokinetics, the rate of heat release at temperatures up to 40 °C can be a qualitative criterion that allows to choose the parameters of heat curing of alkali-activated cement concretes. By introducing a crystallo-chemical hardening accelerator, such as Portland cement clinker, into the composition of alkali-activated blast-furnace slag cements, it is possible to accelerate the processes not only in the condensation-crystallization structure formation stage, but also in the dispersion-coagulation structure formation stage. Portland cement clinker increased the efficiency of thermal curing at relatively non-high temperatures. View Full-Text
Keywords: alkali-activated cement; blast-furnace slag; crystallo-chemical hardening accelerator; heat release; heat curing alkali-activated cement; blast-furnace slag; crystallo-chemical hardening accelerator; heat release; heat curing
Show Figures

Figure 1

MDPI and ACS Style

Usherov-Marshak, A.; Vaičiukynienė, D.; Krivenko, P.; Bumanis, G. Calorimetric Studies of Alkali-Activated Blast-Furnace Slag Cements at Early Hydration Processes in the Temperature Range of 20–80 °C. Materials 2021, 14, 5872. https://doi.org/10.3390/ma14195872

AMA Style

Usherov-Marshak A, Vaičiukynienė D, Krivenko P, Bumanis G. Calorimetric Studies of Alkali-Activated Blast-Furnace Slag Cements at Early Hydration Processes in the Temperature Range of 20–80 °C. Materials. 2021; 14(19):5872. https://doi.org/10.3390/ma14195872

Chicago/Turabian Style

Usherov-Marshak, Aleksandr, Danutė Vaičiukynienė, Pavel Krivenko, and Girts Bumanis. 2021. "Calorimetric Studies of Alkali-Activated Blast-Furnace Slag Cements at Early Hydration Processes in the Temperature Range of 20–80 °C" Materials 14, no. 19: 5872. https://doi.org/10.3390/ma14195872

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop