NDLI: Evaluation of Various Temperature Control Schemes for Crack Prevention in RCC Arch Dams During Construction

Content Provider	Springer Nature Link
Author	Su, Huaizhi Li, Jinyou Wen, Zhiping
Copyright Year	2014
Abstract	Temperature stress is one of the main reasons causing the cracking of high roller compacted concrete (RCC) arch dams during rapid construction. For the construction organization design and implementation of RCC dams, it is an important point to establish the scheme for temperature control and crack prevention, and evaluate its effect. The technology of concrete mixed with MgO is a new developing way for crack prevention of RCC dams. The expansion of MgO can compensate effectively for the tensile stress generated in the cooling period of RCC. To improve the effect of crack prevention for high RCC arch dams, the aforementioned technology needs to be combined with the conventional methods. FEM is used to implement the temperature stress calculation for high RCC arch dams mixed with MgO. The basic principle and process of simulation algorithm are introduced first. According to the actual characteristics of a high RCC arch dam, the following three schemes for temperature control and crack prevention are given. They are “no MgO and no joint”, “mixed with MgO and no joint”, “mixed with MgO and two induced joints”, respectively. The corresponding FEM models are established to calculate the equivalent temperature field and temperature stress of the RCC arch dam mixed with MgO or not. The calculated results under above three schemes are used to appraise the effect controlling the temperature stress by mixing MgO. The positive impact of the combined scheme is analyzed. Some valuable conclusions for the design and construction of actual dams are obtained.
Starting Page	3559
Ending Page	3569
Page Count	11
File Format	PDF
ISSN	13198025
Journal	Arabian Journal for Science and Engineering
Volume Number	39
Issue Number	5
e-ISSN	21914281
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-03-18
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	MgO RCC arch dam Temperature control Crack prevention Combination scheme Simulation analysis Engineering Science
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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