Large-Scale Model Testing of a Concrete Silo EBS for Low- and Intermediate-Level Waste Disposal

1997 ◽  
Vol 506 ◽  
Author(s):  
K. Konishi ◽  
K. Ukaji ◽  
A. Fujiwara ◽  
T. Endo ◽  
Y. Tsuji
Keyword(s):  
Thermal Stress ◽  
Radioactive Waste ◽  
Waste Disposal ◽  
Large Scale ◽  
Heat Of Hydration ◽  
Intermediate Level ◽  
Scale Model ◽  
Large Scale Model ◽  
One Year ◽  
Intermediate Level Radioactive Waste

ABSTRACTThis study focuses on demonstrating the feasibility of constructing a large reinforced concrete silo for the disposal of low- and intermediate-level radioactive waste. In a large-scale model test, the results of temperature (from heat of hydration) and thermal stress analyses were confirmed, as was the practicality of countermeasures to prevent thermal cracking. After one year, the average permeability of the model silo was estimated to be below 1×10−11m/s.

Durability of a reinforced concrete designed for the construction of an intermediate-level radioactive waste disposal facility

2012 ◽  
Vol 1475 ◽  
Author(s):  
G.S. Duffó ◽  
E.A. Arva ◽  
F.M. Schulz ◽  
D.R. Vazquez
Keyword(s):  
Reinforced Concrete ◽  
Service Life ◽  
Radioactive Waste ◽  
Waste Disposal ◽  
Atomic Energy Commission ◽  
Intermediate Level ◽  
Radioactive Waste Disposal ◽  
Disposal Facility ◽  
Final Design ◽  
Intermediate Level Radioactive Waste

ABSTRACTThe National Atomic Energy Commission of the Argentine Republic is developing a nuclear waste disposal management programme that contemplates the design and construction of a facility for the final disposal of intermediate-level radioactive wastes. The repository is based on the use of multiple, independent and redundant barriers. The major components are made in reinforced concrete so, the durability of these structures is an important aspect for the facility integrity. This work presents an investigation performed on a reinforced concrete specifically designed for this purpose, to predict the service life of the intermediate level radioactive waste disposal facility from data obtained with several techniques. Results obtained with corrosion sensors embedded in a concrete prototype are also included. The information obtained will be used for the final design of the facility in order to guarantee a service life more or equal than the foreseen durability for this type of facilities.

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

2014 ◽  
Vol 1004-1005 ◽  
pp. 1594-1597
Author(s):  
Petr Tej ◽  
Jindřich Čech ◽  
Jiří Kolísko ◽  
David Čítek ◽  
Jan L. Vítek
Keyword(s):  
Reinforced Concrete ◽  
Computer Analysis ◽  
Large Scale ◽  
Concrete Slab ◽  
Heat Of Hydration ◽  
Scale Model ◽  
Experimental Measurements ◽  
Reinforced Concrete Slab ◽  
Large Scale Model ◽  
Concrete Body

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.

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