CONTROL FOR CONCRETE CHARACTERISTICS UNDER WINTER CONDITIONS
Abstract
The estimate of the requirements for concrete of monolithic structures, ripen under winter conditions
is given. Such important characteristics as concrete strength, its rate of cooling, temperature
difference between the outside air and concrete at stripping, temperature differential across the concrete
section are considered. A critical analysis of the normalized values of concrete strength is given;
and recommendations for their correction are highlighted. Theoretically proved comments on the
effective way to control the strength of concrete are specified. The solution to control favourable
thermal stress of concrete in the structure is performed.
Keywords: winter concreting, control of concrete strength, thermal stresses.
References
Golovnev S.G. (ed.) Sovremennye stroitel'nye tekhnologii: monografiya [Modern construction technologies:
a monograph]. Chelyabinsk, South Ural St. Univ. Publ., 2010. 268 p.
Krasnovskiy B.M. Inzhenerno-fizicheskie osnovy metodov zimnego betonirovaniya [Engineering and physical
fundamentals of winter concreting]. Moscow, GASIS Publ., 2007. 512 p.
SP 70.13330.2012. Nesushchie i ograzhdayushchie konstruktsii. Aktualizirovannaya redaktsiya SNiP
03.01-87 [Carrying and protecting structures. The updated edition of SNIP 3.03.01-87]. Moscow, State Building
Publ., 2012.
STO NOSTROY 2.6.54-2011. Konstruktsii monolitnye betonnye i zhelezobetonnye. Tekhnicheskie trebovaniya
k proizvodstvu rabot, pravila i metody kontrolya [SRT NOSTROY 2.6.54-2011. Design monolithic concrete
and reinforced concrete. Technical performance requirements, rules and methods of control]. Moscow, 2011.
GOST 10180-90. Betony. Metody opredeleniya prochnosti po kontrol'nym obraztsam [GOST 10180-90.
Concretes. Methods for determining the strength to control samples]. Moscow, 1990.
GOST 17624-87. Betony. Ul'trazvukovoy metod opredeleniya prochnosti [GOST 17624-87. Concretes.
Ultrasonic method for determining the strength]. Moscow, 1987.
GOST 22690-88. Betony. Opredelenie prochnosti mekhanicheskimi metodami nerazrushayushchego kontrolya
[GOST 22690-88. Concretes. Determination of mechanical methods of nondestructive testing]. Moscow,
GOST 18105-2010. Betony. Pravila kontrolya i otsenki prochnosti [GOST 18105-2010. Concretes. Rules
for monitoring and evaluation of strength]. Moscow, 2010.
Pikus G.A., Mozgalev K.M. [Estimate the required number of control temperature points while maintaining
the monolithic slab-like constructions in the winter]. Chelyabinsk, Academic Gazette UralNIIprojectRAASN
Publ., 2014, no. 3, pp. 70–71 (in Russ.).
