Title:
Influence of Air Entrainment Content on Strength and Frost Resistance of Concrete
Author(s):
O. I. Matveeva and G. D. Fedorova
Publication:
Symposium Paper
Volume:
326
Issue:
Appears on pages(s):
16.1-16.8
Keywords:
air, concrete, entrainment, frost, mix, strength, resistance, standard, volume
DOI:
10.14359/51710986
Date:
8/10/2018
Abstract:
According to GOST 26633-2015 the air entrainment content in the concrete mix has to be not less than 4% for concretes with mark on frost resistance F1200 (F2100) and above. The standard places particularly high demands on this indicator to the concrete of the structural layers of roads and airfields, where the volume of air entrainment in a concrete mix for a single layer or upper layer of the duplex coating shall be 5-7% and for the bottom layer of the duplex coating is about 4-6%.
Thus, due to the introduction of the updated normative document outside of the application were of a concrete mix with a volume of air involved 3-4%, which previously was widely used. At the same time according to different researching the amount of air involved from 2.8 to 3.7% provided by mark on frost resistance of concrete F1300 above.
The article presents experimental data confirming the validity of using concrete mixtures with lower air contents involved (2-4%) than it is accepted the standard. The volume of air entrainment of concrete mix is necessary to expand from 2 to 7%. This will save the cement consumption.
Related References:
1. Klieger, P., 1966, “Air Entraining Admixtures”, American Society for Testing and Materials, STP 169-A, 530-542.
2. Jackon, Frank H., 1944, “Concretes Containing Air-Entraining Agents”, Journal of the American Concrete Institute, 40, 509-515.
3. Ramachadran V.S., etc., 1988, “Additives in concrete: Handbook”, ?oscow, Russia, 575 pp.
4. Power, T. C., 1949, “The Air Requirement of Frost Resistant Concrete”, Proceedings, Highway Research Board, 29, 184-202.
5. Power, T. C., 1964, “Topics in Concrete Technology, 3. Mixtures Containing Intentionally Entrained Air,” Journal of the PCA Research and Development Laboratories, 6(3), 19-41.
6. Backstrom, J. E., Burrows, R. W., Mielenz, R. C., Wolkodoff, V. E., 1958, “Origin, Evolution, and Effects of the Air Void System in Concrete. Part 3-Influence of Water-Cement Ratio and Compaction,” Proceedings, American Concrete Institute, 55, 359-375.
7. Sheykin A.E.B., Dobshiz L.M., 1989, “Cement concrete of high frost resistance”, Leningrad, Russia, 128 pp.
8. Dobshiz L. M., 2014, “Durability of transport structures concrete and ways of its improvement”, Concrete Technologies, 4, 32-36.
9. Usachev I. N., Rosental N.K. 2007, “Concrete resistant in a zone of inflow of the Arctic coast of Russia”, Proceedings of the International Conference on Problems of Durability of Buildings and Constructions in modern Construction, Saint-Petersburg, Russia, 286-294.
10. Rosental N.K., Usachev I. N., Galashov A. V., 2014, “Durability of reinforced concrete constructions of the Kislogubsky electric power station in the Arctic”, Concrete Technologies, 1, 22-26.
11. Tolmachev S. N., Belichenko E. A., 2017, Influence of entrained air on properties of road concrete and fibrous concrete// Stroitel'nye materialy Construction Materials., 1-2, 68-72.
12. Koval I. G., Grigoriev A. G., Zubkin V. E., 2015, “Features of use of “Polyspast Target” component in technologies of concrete of road and bridge construction”, Concrete and reinforced concrete, 6, 5-9.
13. Ekkel S. V., 2016, “Some proposals to supplement existing standards for road concrete”, Concrete technologies of concrete, 7-8, 50-59.
14. Matveeva O.I., Fedorova G. D., 2001, “Concrete on local materials for the steel concrete constructions working in severe conditions of Yakutia”, Proceedings of the I All Russia conference on Problems of concrete and reinforced concrete: The concrete at the turn of the third millennium, Moscow, Russia, 3, 1058-1068.
15. Rosental N.K., Matveeva O. I., Fedorova G. D., etc., 2010, “Concrete modifier PFM-NLK for reinforced concrete structures operating in severe conditions”, Construction materials, equipment, technologies of the XXI century, 10, 10-12.
16. Matveeva O.I., Fedorova G. D., Vinokurov A. T., etc., 2006, “Modified concretes for underground construction”, Stroitelnye materialy Construction materials., 10, 18-19.
17. Matveeva O.I., Fedorova G. D., Zyryanov I. V., Lobanov D. V., 2016, “Special concrete for mine shafts in conditions of high-mineralized and high-head groundwaters’effect in permafrost soils zone”, Gornyi zhurnal/Mining journal, 9, 75-80.
18. Ostrowski M., Giergichny Z., Baran T., Nayduchowska M., 2017, “Cements for frost resistant concrete”, Cement and its Applications, 2, 86-88.
19. Chernyshov E.M., 2017, “Frost Destruction of Concretes. Part 1. Mechanism, Criterial Conditions of Control”, Stroitel'nye materialy Construction materials., 9, 40-46.
20. Morozov N.M., Hozin V.G., Krasinikova N.M., 2017, “Structural features of high-strength sandy concrete”, BST – Bulletin of Construction Equipment, 2, 46-48.
21. Koenig V.G., 2015, Issues of increasing bridge structures frost resistance // Concrete Technologies, 11-12, 44-47.
22. Kudla Yu. M., Brykov A.S., Myakin S.V., Mikhailova E.A. “Effect of mineral additives on the performance of air-entraining surfactants in materials based on Portland cement”, Cement and its applications, 3, 98-101.