Development of alkaline concrete on the basis of active aggregates

Authors

DOI:

https://doi.org/10.15587/2706-5448.2021.244780

Keywords:

alkaline cement, alkaline concrete, reactive aggregate, alkaline aggregate corrosion, alkalinity index (pH)

Abstract

The object of the research is the process of directed structure formation in the body of alkaline concrete, made using a reactive aggregate, in this case, basalt, and the process of deformation development in such concrete. The problem with using reactive aggregates is that they cause alkaline corrosion. It manifests itself in the form of cracks and layers of gel-like substances that form at the point of contact of the aggregate with the cement stone.

During the research, methods of physical and chemical analysis were used (X-ray phase, differential thermal and thermogravimetric analyzes, electron microscopy, infrared spectroscopy, microprobe analysis). And also methods of mathematical planning of experiments have been used for the dependence of the physical and technical properties of cements and the directions of their structure formation. Also, the research has been carried out based on the analysis of world achievements in solving the problem of alkaline corrosion of concrete.

The possibility of joint operation of the matrix of alkaline cements and active aggregates, represented by basalt, has been determined. The component composition of alkaline cement has been optimized and the need to increase the amount of the alkaline component in the system for the normal course of structure formation processes has been proved. The study of the influence of technical factors and conditions of hardening on the development of processes of structure formation of the investigated compositions has been carried out. The deformation properties of fine-grained concrete based on slag-alkaline cement and basalt aggregate have been investigated. It is shown that the expansion deformations of the samples, which accompany the process of alkaline corrosion of the aggregate in concrete, are directly related to the component composition and hardening conditions of the material.

The obtained research results confirm the possibility of using active aggregates for the manufacture of building materials, in particular, based on alkaline cements. But for the safe course of the processes of structure formation, the component composition of the system has to be adjusted by introducing an active mineral additive and an additional alkaline component. The use of hydrophobizing additives makes it possible to increase the strength of the material even when operating under normal heat and humidity conditions.

Author Biographies

Oleksandr Kovalchuk, Kyiv National University of Construction and Architecture

PhD, Senior Researcher

V. D. Glukhovsky Scientific Research Institute for Binders and Materials

Viktoriia Zozulynets, Kyiv National University of Construction and Architecture

Postgraduate Student

Department of Technology of Building Structures and Products

References

  1. Krivenko, P. V., Ilin, V. P., Zgardan, E. P. (1998). Dolgovechnost shlakoschelochnykh betonov s zapolnitelyami, sposobnymi k reaktsii «scheloch-silikat». 4-i Kitaiskii Mezhdunarodnyi Simpozium po tsementu i betonu. Pekin, 54–61.
  2. Krivenko, P. V., Mkhitaryan, N. M., Chirkova, V. V., Zgardan, E. P. (1999). Dolgovechnost schelochnykh portlandtsementnykh betonov, sdelannykh s scheloche-reaktivnym zapolnitelem. Chetvertaya Mezhdunarodnaya Konferentsiya po dolgovechnosti betona. Sidnei, 17–22.
  3. Krivenko, P. V., Kovalchuk, O. Y. (2020). Influence of Type of Alkaline Activator on Durability of Alkali Activated Concrete Using Aggregates Capable to Alkali-Silica Reaction. Key Engineering Materials, 864, 180–188. doi: http://doi.org/10.4028/www.scientific.net/kem.864.180
  4. Kovalchuk, O., Kochetov, G., Samchenko, D., Kolodko, A. (2019). Development of a technology for utilizing the electroplating wastes by applying a ferritization method to the alkaline­activated materials. Eastern-European Journal of Enterprise Technologies, 2 (10 (98)), 27–34. doi: http://doi.org/10.15587/1729-4061.2019.160959
  5. Zhang, C., Wang, A., Tang, M., Wu, B., Zhang, N. (1999). Influence of aggregate size and aggregate size grading on ASR expansion. Cement and Concrete Research, 29 (9), 1393–1396. doi: http://doi.org/10.1016/s0008-8846(99)00099-x
  6. Yang, T., Zhang, Z., Wang, Q., Wu, Q. (2020). ASR potential of nickel slag fine aggregate in blast furnace slag-fly ash geopolymer and Portland cement mortars. Construction and Building Materials, 262, 119990. doi: http://doi.org/10.1016/j.conbuildmat.2020.119990
  7. Khan, M. N. N., Sarker, P. K. (2019). Alkali silica reaction of waste glass aggregate in alkali activated fly ash and GGBFS mortars. Materials and Structures, 52 (5). doi: http://doi.org/10.1617/s11527-019-1392-3
  8. Peng, Z., Shi, C., Shi, Z., Lu, B., Wan, S., Zhang, Z. et. al. (2020). Alkali-aggregate reaction in recycled aggregate concrete. Journal of Cleaner Production, 255, 120238. doi: http://doi.org/10.1016/j.jclepro.2020.120238
  9. Barreto Santos, M., De Brito, J., Santos Silva, A. (2020). A Review on Alkali-Silica Reaction Evolution in Recycled Aggregate Concrete. Materials, 13 (11), 2625. doi: http://doi.org/10.3390/ma13112625
  10. Leemann, A., Borchers, I., Shakoorioskooie, M., Griffa, M., Müller, C., Lura, P. (2019). Microstructural analysis of ASR in concrete – accelerated testing versus natural exposure. International Conference on Sustainable Materials, Systems and Structures (SMSS) Durability, monitoring and repair of structures. Rovinj, 222–229. Available at: https://www.dora.lib4ri.ch/empa/islandora/object/empa:19231
  11. Mahanama, D., De Silva, P., Kim, T., Castel, A., Khan, M. S. H. (2019). Evaluating Effect of GGBFS in Alkali–Silica Reaction in Geopolymer Mortar with Accelerated Mortar Bar Test. Journal of Materials in Civil Engineering, 31 (8), 04019167. doi: http://doi.org/10.1061/(asce)mt.1943-5533.0002804

Downloads

Published

2021-12-08

How to Cite

Kovalchuk, O., & Zozulynets, V. (2021). Development of alkaline concrete on the basis of active aggregates. Technology Audit and Production Reserves, 6(1(62), 36–42. https://doi.org/10.15587/2706-5448.2021.244780

Issue

Vol. 6 No. 1(62) (2021): Industrial and technology systems

Section

Materials Science: Original Research

License

Copyright (c) 2021 Oleksandr Kovalchuk, Viktoriia Zozulynets

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.