1. bookVolume 2 (2021): Issue 1 (June 2021)
Journal Details
License
Format
Journal
eISSN
2718-4978
First Published
09 Jul 2020
Publication timeframe
2 times per year
Languages
English
access type Open Access

Frost resistance of cement-sand and concrete beams during unilateral freezing

Published Online: 13 Sep 2021
Volume & Issue: Volume 2 (2021) - Issue 1 (June 2021)
Page range: 64 - 74
Received: 25 Jan 2021
Accepted: 22 Feb 2021
Journal Details
License
Format
Journal
eISSN
2718-4978
First Published
09 Jul 2020
Publication timeframe
2 times per year
Languages
English
Abstract

The work investigates changes in the beam structure under the action of local freezing, which leads to a change of the mechanical properties of the material and, consequently, of the beam structure. Two types of beam samples were used: from cement-sand mortar and from concrete. The work investigates the change in the development of deformations depending on the conditions of freezing of samples. The second accelerated method for assessing frost resistance was chosen according to DSTU B В.2.7-47-96. An accelerated method was chosen for assessing frost resistance at the temperature of -20 ±2 C°. After every five freeze-thaw cycles, the following changes were monitored: mass, water absorption, ultrasound transmission rate, damage coefficient, tensile bending strength, splitting strength, compressive strength, carbonization depth. The results showed that both in concrete and in mortar samples, the compressive strength after freezing was lower by 8% and 15% accordingly. The experimental results obtained confirm the assumptions made that the frost resistance of the material depends on the conditions of exposure of negative temperatures on products and structures and it can be used in a wider range of construction which will push regional development.

Keywords

Dobshits L. M. (2007). Obtaining concrete of increased durability for transport, industrial and civil structures. RIF “Rose of the World”, pp. 25 – 28. Search in Google Scholar

DSTU B V.2.7-47-96. - ДСТУ Б В.2.7-47-96. (ГОСТ 10060.0-95). “Concrete. Methods for determining frost resistance. General requirements”. Search in Google Scholar

DSTU B V.2.7-47-96:2008 - ДСТУ Б В.2.7-47-96. “Building materials. Concrete. Methods for determining the average density, humidity, water absorption, porosity and water resistance”2008 “Building materials. Concrete. Methods for determining the average density, humidity, water absorption, porosity and water resistance” Search in Google Scholar

DSTU B V.2.7-220:2009 - ДСТУ Б В.2.7-220: 2009 “Building materials. Concrete. Determination of strength by mechanical methods of non-destructive testing. Search in Google Scholar

DSTU B V.2.7-214:2009 - ДСТУ Б В.2.7-214:2009 “Concretes. Methods for determining the strength of control samples”. Search in Google Scholar

Dvorkin L. I., Dvorkin O. L. (2003). On the similarity of concrete frost resistance structures. News of higher educational institutions. - Construction, vol. 1, pp. 34–37. Search in Google Scholar

Khomenko A. A., Rogozha P. S., Ostra T. V. (2014). Развитие градиентов влажностных деформаций в неравномерно увлажненных конструкциях (Development of gradients of moisture deformations in unevenly moistened structures). Bulletin of ODABA, vol. 55, pp. 286-293. Search in Google Scholar

Kuntsevich O.V. (1981). Concrete with high frost resistance for the extreme north (1st ed.). Stroyizdat. Search in Google Scholar

Nepomyashchy О. М., Vyrovoy V. M., Makarova S. S., Khomenko A. A., (2020). Frost resistance of construction composites during one-sided freezing. Bulletin of ODABA, vol.79, pp. 109-116. Search in Google Scholar

Patent of Ukraine No. 5735: https://uapatents.com/2-5735-sposib-viyavlennyatrishhin-betonnikh-ta-zalizobetonnikh-konstrukcijj-na-neorganichnomuvyazhuchomu.html Search in Google Scholar

Podvalny A. M. (2004). About the concept of providing frost resistance of concrete in the structures of buildings and structures. Stroitelnye materialy, vol. 6, pp. 4–6. Search in Google Scholar

Powers T. C. (1945) Basic considerations pertaining to freezing and thawing tests (1st ed.). Proc. Am. Concrete Inst. Search in Google Scholar

Rusin Z. (2002). Technologia betonow mrozodpornych (1st ed.). Polski cement Sp. Zoo. Search in Google Scholar

Sheikin A.E., Dobshits L. M. (1989). Cement concrete with high frost resistance (1st ed.). Stroyizdat. Search in Google Scholar

Sumgin M. I. (1927). Permafrost of the soil within the USSR (1st ed.). Publishing house of the Academy of Sciences of the USSR. Search in Google Scholar

Vyrovoy V. N., Dorofeev V. S., Sukhanov V. G. (2010). Composite building materials and structures, structure, self-organization properties (1st ed.). Odessa “TES”. Search in Google Scholar

Vyrovoy V. N., Zakorchemnaya N. O., Zakorchemny Yu. O. (2007). Анализ механизма развития трещин при замерзании в их объеме воды (Analysis of the mechanism of crack development during freezing in their volume of water). DonNACEA Bulletin, vol. 1(63), pp. 96-100. Search in Google Scholar

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