Applications of tremie concrete in the Olmsted dam

Title: Applications of tremie concrete in the Olmsted dam
Author(s): Dale E. Berner, Haijian Shi
Paper category : conference
Book title: International RILEM Conference on Advances in Construction Materials Through Science and Engineering
Editor(s): Christopher Leung and K.T. WAN
ISBN: 978-2-35158-116-2
e-ISBN: 978-2-35158-117-9
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 899 - 906
Total Pages: 8
Nb references: 4
Language: English

Abstract: Tremie concrete has been extensively used in challenging marine environments. Its recent application in the Olmsted Dam has provides one example of the advancement in the sophistication of the technology. In this paper, the complete placement procedures for tremie concrete in the Olmsted dam built by means of in-the-wet construction are presented together with the desired characteristics and corresponding mix designs. The use of Nonlinear Incremental Structural Analysis (NISA) for the determination of thermal effects in both the tremie concrete and its enveloping concrete shell is also reviewed. A mock-up test, which was used to test the constructability of the tremie concrete, is presented at the end. Several findings are included in this paper. During the initial tremie concrete placement, the formation of a seal of fresh concrete created by mounding concrete at the embedded end of the tremie pipe was identified as a key factor for a successful operation. Self-consolidation and good flowability were found to be other desired characteristics for the tremie concrete, which are proved to be achieved by the presented mix design. A high percentage of Ground Granulated Blast Furnace Slag (GGBFS) can significantly reduce the concrete heat of hydration. Proper admixture can enhance the performance of the tremie concrete. No potential major thermal cracks were identified through the use of NISA. The tremie concrete was confirmed by the tests to be able to fully infill the voids and have a high quality.

Online publication: 2011-10-31
Publication type : full_text
Public price (Euros): 0.00