Effectiveness of Partially Cooling System for Massive Concrete Structures

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Title: Effectiveness of Partially Cooling System for Massive Concrete Structures

Author(s): M. Eto, K. Maruyama and S. Ono

Publication: Special Publication

Volume: 179

Issue:

Appears on pages(s): 831-854

Keywords: cooling; finite element method; mass concrete

Date: 6/1/1998

Abstract:
The authors have proposed a partially pre-cooling system for massive structures, such as gravity concrete dams. It is discussed in this paper how the effectiveness of the proposed method is discussed using the finite element analysis. In the ordinary pre-cooling system, pre-cooled concrete is placed in the entire region (width and depth) of a massive structure. In the proposed system , pre-cooled concrete is placed only in the surface layer. In order to evaluate the effectiveness of this system, a thermal stress analysis was conducted by the finite element method. The key parameters were the dimensions of the cooling system and cooling temperatures. The results show that the proposed system is rather effective than the conventional cooling system in terms of the thermal stress condition of massive concrete structures. In addition, the cost benefit is adequately expected.