Simulation Analysis, Dynamic Temperature Control, Numerical Monitoring, and Model Test of Thermal Stresses in Massive Concrete Structures

The work is dedicated to research of the thermal stresses state of massive concrete and reinforced concrete structures in construction period. The article examines the results of the analysis of the thermal stress state, which occurs in massive concrete ground slab with thickness of 1 m. The study was conducted with using analytical models, which include the factor of diurnal temperature range in comparison with simplified methods. Authors established that solving the problem of thermal stressed state of the massive foundation slabs in the building period without taking into account the influence temperature changing during the month might not cause to significant deviation of the real diagram of the thermal stresses and elongation deformations in the structures body: error is less than 0.5%.

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A practical planning tool for the simulation of thermal stresses and for the prediction of early thermal cracks in massive concrete structures

Thermal Cracking in Concrete at Early Ages ◽

10.1201/9781482271294-50 ◽

1994 ◽

pp. 307-314

Keyword(s):

Thermal Stresses ◽

Concrete Structures ◽

Planning Tool ◽

Thermal Cracks ◽

Massive Concrete

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Delayed ettringite formation in massive concrete structures: an account of some studies of degraded bridges

International RILEM Workshop on Internal Sulfate Attack and Delayed Ettringite Formation ◽

10.1617/2912143802.008 ◽

2004 ◽

Author(s):

E. Menéndez

Keyword(s):

Concrete Structures ◽

Delayed Ettringite Formation ◽

Massive Concrete ◽

Ettringite Formation

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Control of thermal cracking using heat of cement hydration in massive concrete structures

ConcreteLife'06 - International RILEM-JCI Seminar on Concrete Durability and Service Life Planning: Curing, Crack Control, Performance in Harsh Environments ◽

10.1617/291214390x.021 ◽

2006 ◽

Author(s):

T. Mizobuchi

Keyword(s):

Cement Hydration ◽

Concrete Structures ◽

Thermal Cracking ◽

Massive Concrete

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Temperature Control and Anti-Cracking Measures for a High-Performance Concrete Aqueduct

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.405-408.2739 ◽

2013 ◽

Vol 405-408 ◽

pp. 2739-2742 ◽

Cited By ~ 1

Author(s):

Zhen Hong Wang ◽

Shu Ping Yu ◽

Yi Liu

Keyword(s):

Temperature Control ◽

Temperature Difference ◽

High Performance ◽

High Performance Concrete ◽

Concrete Structures ◽

Apparent Temperature ◽

Mass Concrete ◽

Water Pipe ◽

Thin Walled ◽

Water Pipe Cooling

To solve the problem of cracks developing on thin-walled concrete structures during construction, the authors expound on the causes of cracks and the crack mechanism. The difference between external and internal temperatures, basic temperature difference and constraints are the main reasons of crack development on thin-walled concrete structures. Measures such as optimizing concrete mixing ratio, improving construction technology, and reducing temperature difference can prevent thin-walled concrete structures from cracking. Moreover, water-pipe cooling technology commonly used in mass concrete can be applied to thin-walled concrete structures to reduce temperature difference. This method is undoubtedly a breakthrough in anti-cracking technology for thin-walled concrete structures, particularly for thin-walled high-performance concrete structures. In addition, a three-dimensional finite element method is adopted to simulate the calculation of temperature control and anti-cracking effects f. Results show the apparent temperature controlling effect of water-pipe cooling for thin-walled concrete structures.

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