Comparative Resistance of Concrete with Aggregates and Fillers of Different Composition

Abstract:

The paper studies the influence of aggregates and fillers with negative and positive electrical surface properties on the corrosion resistance of concrete. The advantage of resistance of fine-grained concrete on marble sand in comparison with concrete on quartz sand, regardless of the type of aggressive environment, is established. At the same time, the stability of samples of powdered concrete with 10 and 30% of fine-grained filler changed little when replacing the quartz powder with marble one. It is shown that the resistance coefficients of powdered concrete samples with quartz filler (10%) do not differ from the resistance coefficients of samples of a similar composition with crushed marble filler, and with an increase in the dosage of the filler (30 %) slightly exceed. It was found that in powder concretes without aggregates, the contact layer between the cement matrix and the aggregate is absent, so the composition of the mineral powder plays a much smaller role in the corrosion processes of cement stone. The obtained results allowed establishing that electrokinetic phenomena play a secondary role, and the main influence on the stability of fine-grained concrete is the processes of pore colmation by chemical reactions, as well as the interaction of the surface layers of the aggregate with the cement matrix.

• Periodical: Materials Science Forum (Volume 1017)
• Pages: 133-142
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1017.133
• Online since: January 2021
• Authors: Shark M. Rakhimbayev, Natalia M. Tolypina, Elena N. Khakhaleva*, Daniil A. Tolypin
• Keywords: Aggregates, Aggressive Environments, Fine-Grained Concrete, Powdered Concrete, Strength, Zeta Potential

References

[1] N.K. Rozental, Corrosion resistance of cement concrete low and especially low permeability, FGYP ZPP, Мoscow, (2006).

[2] Sh.M. Rakhimbaev, N.M. Tolypina, The increased corrosion resistance of concretes by rational choice of binder and fillers, Monograph, BSTU after V.G. Shukhov, Belgorod, (2015).

[3] E.N. Karpacheva, Sh.М. Rakhimbaev, N.M. Tolypina, Corrosion of fine-grained concrete in aggressive media of complex composition, Monograph, Lab lambert Academic Publishing GmbH & Co.KG, Germany, (2012).

[4] E.G. Savich, Study of solutions of diffusion of chloride salts in the cement stone and concrete, Avtoreferat thesis. Ph.d., Rostov-na-Donu, (1982).

[5] H. Ushiyama, S. Goto, Diffusion of different ions in hardened portland cement test, Moscow, (1974).

[6] A.S. Brykov, Processes of chemical corrosion in Portland cement concretes. Textbook, SpBGTU, Saint Petersburg, (2016).

[7] N.M. Tolypina, To the question about the interaction of cement matrix with placeholders, Modern high technologies.1(6) (2016) 81-85.

[8] M. Cohen, J. Olek, Differentiating seawater and ground water sulfate attack in Portland cement mortars Santhanam Manu, Cement and Concrete Composites. 36(12) (2006) 2132–2137.

DOI: 10.1016/j.cemconres.2006.09.011

[9] N.M. Tolypina, Sh.M. Rakhimbaev, E.N. Khakhaleva, The materials are resistant hydration on the hardening of the concrete filler of scrap, Bulletin of BSTU named after V.G. Shukhov. 7 (2017) 6–9.

DOI: 10.12737/article_5940f017098708.32121774

[10] I.Stark, B. Wicht, Durability of concrete, Orans, Kiev, (2004).

[11] V.P. Sizov, Designing heavy concrete formulations, Constr. Publishing House, Moscow, (1974).

[12] Sh.M. Rakhimbaev, Kinetics processes of mudding when chemical corrosion of cement systems, Concrete and reinforced concrete. 6 (2012) 16-17.