Experimental Measurements and Computer Analysis of Heat of Hydration and Shrinkage of Large-Scale Model of Reinforced Concrete Wall with Base

Abstract:

This paper deals with the experimental measurements and computer analysis of the development of heat of hydration and shrinkage in a large-scale model of a reinforced concrete wall with a base 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 a long massive wall located on a base slab. The model represents a four meter cut of a long wall structure (thickness of 1.6 m) together with its base slab (thickness of 1 m). Bars in the longitudinal direction of the wall and of the base slab were extended behind the concrete body and welded to a steel frame, which simulated an anchorage of longitudinal reinforcement of a continuous wall with a base slab. Before casting, the reinforcement bars were equipped with vibrating wire strain gauges and 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 results of the experiment and the numerical analysis were mutually compared.

• Periodical: Advanced Materials Research (Volumes 1004-1005)
• Pages: 1598-1601
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1004-1005.1598
• Online since: August 2014
• Authors: Petr Tej, Jindřich Čech, Jiří Kolisko, David Citek, Jan L. Vítek
• Keywords: Computer Analysis, Crack, Heat of Hydration, 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