AbstractAbout the AuthorReferences
Durability of concretes can be significantly improved under the condition of reasonable assignment of design requirements for concrete, correct choice of materials for its preparation, selection of concrete mix with due regard for the specified properties, compliance with the technology of preparation, placing, compaction, and care for concrete in the process of its active hardening and operation. Recommendations for achieving the best results for each of listed items are presented. It is noted that the concrete resistance to destruction will be more active, the higher its impermeability, which is affected by the value of the open porosity and sizes of pores. It is shown that the low frost resistance is another reason for insuffi- cient durability of concrete and reinforced concrete. Reasons and mechanism of formation of various types of pores (reserve, contraction, closed, conditionally closed, open) are consid- ered in details.
L.M. DOBSHITS, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
Moscow State University of Railway Engineering (9, bldg. 9, Obraztsova Street, 127994, Moscow, Russian Federation)
1. Moshchansky N.A. Plotnost’ i stoikost’ betonov [Density and firmness of concrete]. Moscow: Gostoyizdat. 1951. 251 p.
2. Sheykin A.E. Stroitel’nye materialy [Construction materials]. Moscow: Stroyizdat. 1988. 432 p.
3. Kuntsevich O.V. Betony vysokoi morozostoikosti dlya sooruzhenii Krainego Severa [Concrete of high frost resistance for constructions of Far North]. Leningrad: Stroyizdat, 1983. 132 p.
4. Sheykin A.E., Dobshits L.M. Tsementnye betony vysokoi morozostoikosti [Cement concrete of high frost resistance]. Leningrad: Stroyizdat, 1989. 128 p.
5. Sheykin A.E., Dobshits L.M. About communication of criterion of frost resistance with real frost resistance of concrete. Beton i Zhelezobeton. 1981. No. 1, pp. 19–20. (In Russian).
6. Sheykin A. E., Dobshits L.M., A.T. Baranov. Criteria of frost resistance of cellular concrete of autoclave curing. Beton i Zhelezobeton. 1986. No. 5, pp. 31–32. (In Russian).
7. Dobshits L.M. Bases of increase in durability of concrete for transport constructions. Ensuring quality of reinforced concrete of transport constructions. Scientific works of JSC TSNIIS. Moscow: JSC TSNIIS, 2006. Issue 236, pp. 51–62. (In Russian).
8. Davidson M. G. Vodonepronitsaemyi beton [Waterproof concrete]. Leningrad: Lenizdat, 1965. 98 p.
9. Kolokolnikova E.I. Dolgovechnost’ stroitel’nykh materialov (beton i zhelezobeton) [Durability of construction materials (concrete and reinforced concrete)]. Moscow: Vysshaya shkola, 1975. 159 p.
10. Gorchakov G.I. Povyshenie morozostoikosti i prochnosti betona [Increase in frost resistance and durability of concrete]. Moscow: Promstroyizdat, 1956. 107 p.
11. Shestoperov S.V. Dolgovechnost’ betonov [Durability of concrete]. Moscow: Avtotransizdat, 1976. 267 p.
12. Sheykin A.E., Dobshits L.M. About purpose of brand of concrete on frost resistance. Ensuring quality of reinforced concrete designs in severe climatic conditions and permafrost soil. Theses of reports of the All-Union con- ference. Yakutsk: IPO TsNTI, 1988, pp. 136–138. (In Russian).
13. Dobshits L.M., Klibanov A.L., Fedunov V.V. Tekhnologiya of receiving high-strength, environmentally friendly, durable concrete with early terms of set of durability. Visnik Odeskoi Derzhavnoi Akademii Budivnitsstvo that to Фrchitecture. 2009. No. 35, pp. 131–135.
14. Avtorskoe svidetel’stvo 1558882 (USSR). Sposob opredeleniya sostava tyazhelogo betona [Way of determination of composition of heavy concrete]. Sheykin A.E., Dobshits L.M. Declared 7.8.1997. Published 4.23.1990. Bulletin No. 15. (In Russian).
15. Patent RF No. 2308429. Kompleksnaya dobavka dlya betonnykh i rastvornykh smesei [Complex additive for concrete and the rastvornykh Mixes] Dobshits L.M., Fedunov V.V., Kruglov V.M., Sviridov O.S., Lomonosova T.I., Hizhnyak V.M. Declared 10:04. 2006. Published 10.20.2007. Bulletin No. 29. (In Russian).
16. Patent RF No. 2319681. Sposob izgotovleniya betonnykh i zhelezobetonnykh izdelii [Way of production of concrete and concrete goods]. Dobshits L.M., Kruglov V.M., Sviridov O.S., Lomonosov T.I., Krikunov O.I., Fedunov V.V. Declared 9.25.2006. Published 20.03.2008. Bulletin No. 8. (In Russian).
17. Avtorskoe svidetel’stvo1502545 (USSR). Sposob udlineniya srokov ekspluatatsii betonnykh i zhelezobetonnykh elementov [Way of lengthening of terms of operation of concrete and reinforced concrete elements]. Sheykin A.E., Dobshits L.M., Vernikov A.Ya., Prudov- sky D.M. Declared 12.2.1986. Published 8.23.1989. Bulletin No. 31. (In Russian).
2. Sheykin A.E. Stroitel’nye materialy [Construction materials]. Moscow: Stroyizdat. 1988. 432 p.
3. Kuntsevich O.V. Betony vysokoi morozostoikosti dlya sooruzhenii Krainego Severa [Concrete of high frost resistance for constructions of Far North]. Leningrad: Stroyizdat, 1983. 132 p.
4. Sheykin A.E., Dobshits L.M. Tsementnye betony vysokoi morozostoikosti [Cement concrete of high frost resistance]. Leningrad: Stroyizdat, 1989. 128 p.
5. Sheykin A.E., Dobshits L.M. About communication of criterion of frost resistance with real frost resistance of concrete. Beton i Zhelezobeton. 1981. No. 1, pp. 19–20. (In Russian).
6. Sheykin A. E., Dobshits L.M., A.T. Baranov. Criteria of frost resistance of cellular concrete of autoclave curing. Beton i Zhelezobeton. 1986. No. 5, pp. 31–32. (In Russian).
7. Dobshits L.M. Bases of increase in durability of concrete for transport constructions. Ensuring quality of reinforced concrete of transport constructions. Scientific works of JSC TSNIIS. Moscow: JSC TSNIIS, 2006. Issue 236, pp. 51–62. (In Russian).
8. Davidson M. G. Vodonepronitsaemyi beton [Waterproof concrete]. Leningrad: Lenizdat, 1965. 98 p.
9. Kolokolnikova E.I. Dolgovechnost’ stroitel’nykh materialov (beton i zhelezobeton) [Durability of construction materials (concrete and reinforced concrete)]. Moscow: Vysshaya shkola, 1975. 159 p.
10. Gorchakov G.I. Povyshenie morozostoikosti i prochnosti betona [Increase in frost resistance and durability of concrete]. Moscow: Promstroyizdat, 1956. 107 p.
11. Shestoperov S.V. Dolgovechnost’ betonov [Durability of concrete]. Moscow: Avtotransizdat, 1976. 267 p.
12. Sheykin A.E., Dobshits L.M. About purpose of brand of concrete on frost resistance. Ensuring quality of reinforced concrete designs in severe climatic conditions and permafrost soil. Theses of reports of the All-Union con- ference. Yakutsk: IPO TsNTI, 1988, pp. 136–138. (In Russian).
13. Dobshits L.M., Klibanov A.L., Fedunov V.V. Tekhnologiya of receiving high-strength, environmentally friendly, durable concrete with early terms of set of durability. Visnik Odeskoi Derzhavnoi Akademii Budivnitsstvo that to Фrchitecture. 2009. No. 35, pp. 131–135.
14. Avtorskoe svidetel’stvo 1558882 (USSR). Sposob opredeleniya sostava tyazhelogo betona [Way of determination of composition of heavy concrete]. Sheykin A.E., Dobshits L.M. Declared 7.8.1997. Published 4.23.1990. Bulletin No. 15. (In Russian).
15. Patent RF No. 2308429. Kompleksnaya dobavka dlya betonnykh i rastvornykh smesei [Complex additive for concrete and the rastvornykh Mixes] Dobshits L.M., Fedunov V.V., Kruglov V.M., Sviridov O.S., Lomonosova T.I., Hizhnyak V.M. Declared 10:04. 2006. Published 10.20.2007. Bulletin No. 29. (In Russian).
16. Patent RF No. 2319681. Sposob izgotovleniya betonnykh i zhelezobetonnykh izdelii [Way of production of concrete and concrete goods]. Dobshits L.M., Kruglov V.M., Sviridov O.S., Lomonosov T.I., Krikunov O.I., Fedunov V.V. Declared 9.25.2006. Published 20.03.2008. Bulletin No. 8. (In Russian).
17. Avtorskoe svidetel’stvo1502545 (USSR). Sposob udlineniya srokov ekspluatatsii betonnykh i zhelezobetonnykh elementov [Way of lengthening of terms of operation of concrete and reinforced concrete elements]. Sheykin A.E., Dobshits L.M., Vernikov A.Ya., Prudov- sky D.M. Declared 12.2.1986. Published 8.23.1989. Bulletin No. 31. (In Russian).
For citation: Dobshits L.M. Ways to improve the durability of concretes. Stroitel’nye Materialy [Construction Materials]. 2017. No. 10, pp. 4–9. DOI: https://doi.org/10.31659/0585-430X-2017-753-10-4-9. (In Russian).