Study of the nanocatalysis effect on the strength formation of reactive powder concrete

Authors

  • Олександра Олександрівна Шишкіна National University of Krivoy Rog XXII-th Party Congress str., 11, Kryvyi Rih, Ukraine, 50027, Ukraine https://orcid.org/0000-0003-3997-7591
  • Олександр Олексійович Шишкін National University of Krivoy Rog XXII-th Party Congress str., 11, Kryvyi Rih, Ukraine, 50027, Ukraine https://orcid.org/0000-0001-6820-7604

DOI:

https://doi.org/10.15587/1729-4061.2016.58718

Keywords:

concrete, strength, surfactants, micellar catalysis, cement, powder, filler, rate

Abstract

Changes in the rate of cement hydration affect not only the technological characteristics of concrete mixes, but also cause changes in the rate of concrete compressive strength formation.

The paper examines the effect of micellar solutions, consisting of micelle-forming surfactants or a mixture of micelle-forming surfactants and conventional molecular surfactant. The study found that the micellar solutions change the nature and the ratio of hydration products in the cement stone, but do not change the type of cement hydration products that is act as micellar catalysts. This significantly increases the rate of strength formation of reactive powder concretes, both at initial and later hardening stages.

It is proved that the micellar catalysis can be used to control hardening and strength formation of cement, thereby reducing the time to achieve the design strength of concrete. Thus, concrete gains the strength of 50 MPa for 4 days with the use of the micellar catalysis and the same strength for 28 days without additives.

Author Biographies

Олександра Олександрівна Шишкіна, National University of Krivoy Rog XXII-th Party Congress str., 11, Kryvyi Rih, Ukraine, 50027

Associate professor, Candidate of technical science

Department of Technology of building products, materials and structures

Олександр Олексійович Шишкін, National University of Krivoy Rog XXII-th Party Congress str., 11, Kryvyi Rih, Ukraine, 50027

Doctor of Technical Sciences, Professor

Department of Technology of building products, materials and structures

References

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Published

2016-02-21

How to Cite

Шишкіна, О. О., & Шишкін, О. О. (2016). Study of the nanocatalysis effect on the strength formation of reactive powder concrete. Eastern-European Journal of Enterprise Technologies, 1(6(79), 55–60. https://doi.org/10.15587/1729-4061.2016.58718

Issue

Vol. 1 No. 6(79) (2016): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

License

Copyright (c) 2016 Олександр Олексійович Шишкін, Олександра Олександрівна Шишкіна

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