Method of calculating temperature crack resistance of concrete and kinetics of temperature cracks in mass concrete of hydraulic structures

Trapeznikov, L. P.

doi:10.1007/bf01426659

Cited by 1 publication

(2 citation statements)

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“…A change in the thermal state of such structures occurs due to the heat liberation from cement hydration during the concrete hardening process, as well as outside temperature fluctuations, solar exposure, various technological factors, etc. Emerging thermal stresses may cause damage to the structural integrity [15][16][17][18][19][20][21][22][23][24][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

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Thermal Stressed State in Massive Concrete Structures in the Winter Building Period

Korotchenko

Ivanov

Semenov

et al. 2016

MATEC Web of Conferences

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Abstract. The article deals with issues of the thermal cracking resistance in massive concrete and reinforced concrete structures during the building period. The paper gives the calculation results of thermal stressed state in massive foundation slabs with different time organization of the thermal protection. It was found that the thermal crack resistance is fully guaranteed when the insulation is installed immediately after concrete has been placed or it has been placed with short delay. The delay can be allowed if the relative tensile strain of the concrete does not exceed the tensility limit. The acceptable delay ranges from 8 to 30% of time it takes to reach the maximum temperature in the concrete block. The surface insulation installation at the time of the temperature peak inevitably leads to the formation and development of cracks.

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Section: Introductionmentioning

confidence: 99%

“…Both heat enclosure and an insulation layer on the concrete block are used in order to prevent high tensile strain [17,22]. A peripheral concrete electric cable with or without minimum thermal protection is usually used as a more efficient and expensive measure.…”

Section: Introductionmentioning

confidence: 99%