Experimental Measurements and Computer Analysis of Heat of Hydration and Shrinkage of Large-Scale Model of Reinforced Concrete Slab

Abstract:

This paper deals with the experimental measurements and computer analysis of the development of heat of hydratation and shrinkage in a large-scale model of a reinforced concrete slab. A large-scale model was built in situ to experimentally verify the design of the reinforcement, with the aim of preventing the formation of cracks in slab. The model represents a four times four meters cut of a slab structure of a thickness of 1.6 m. Bars in the horizontal direction of the slab were extended behind the concrete body and welded to a steel frame, which simulated the anchorage of horizontal reinforcement of a continuous slab. Before casting, the reinforcement bars were fitted with vibrating wire strain gauges and with resistance gauges for monitoring the strain, as well as with temperature sensors for determining the temperature field caused by heat of hydration. According to the needs of the experiment, the structure was modelled in GiD 11.0 software and calculated in the AtenaWin program. The experimental results and the results obtained by a numerical analysis were compared.

• Periodical: Advanced Materials Research (Volumes 1004-1005)
• Pages: 1594-1597
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1004-1005.1594
• Online since: August 2014
• Authors: Petr Tej, Jindřich Čech, Jiří Kolisko, David Citek, Jan L. Vítek
• Keywords: Computer Analysis, Crack, Heat of Hydratation, Measurement, Shrinkage, Temperature Gradient

References

[1] V. Červenka, J. Červenka and R. Pukl, ATENA – A tool for engineering analysis of fracture in concrete, Sadhana 27 (4) (2002) 485-492.

DOI: 10.1007/bf02706996

[2] P. Tej, V. Vacek, J. Kolisko, J. Čech,: Computer Nonlinear Analysis of the Formation and Development of Cracks in a Reinforced Concrete Slab Loaded by a Planar Uniform Load, Key Engineering Materials Vol. 606 (2014) pp.229-232.

DOI: 10.4028/www.scientific.net/kem.606.229