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On the performance of passivr TMDs in reducing the damage in 2-D concrete structural models

Rofooei, F. R ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1016/j.proeng.2011.07.209
  3. Publisher: 2011
  4. Abstract:
  5. Pozzolanic materials, either naturally occurring or artificially made, have long been in practice since the early civilization. In recent years, the utilisation of pozzolanic materials in concrete construction has become increasingly widespread, and this trend is expected to continue in the years ahead because of technological, economical and ecological advantages of the materials. One of the latest additions to the ash family is palm oil fuel ash, a waste material obtained on burning of palm oil husk and palm kernel shell as fuel in palm oil mill boilers, which has been identified as a good pozzolanic material. This paper highlights test results on the performance behavior of palm oil fuel ash (POFA) in reducing the heat of hydration of concrete. Two concrete mixes namely OPC concrete i.e. concrete with 100% OPC as control, and POFA concrete i.e. concrete with 30% POFA and 70% OPC were prepared, and the temperature rise due to heat of hydration in both the mixes was recorded. It has been found that palm oil fuel ash not only reduced the total temperature rise but also delayed the time at which the peak temperature occurred. The results obtained and the observation made clearly demonstrate that the partial replacement of cement by palm oil fuel ash is advantageous, particularly for mass concrete where thermal cracking due to excessive heat rise is of great concern
  6. Keywords:
  7. Palm oil fuel ash ; Pozzolan ; Temperature ; Concrete mix ; Fuel ash ; Heat of hydration ; Mass concrete ; Naturally occurring ; OPC concretes ; Palm kernel shells ; Palm oil ; Partial replacement ; Peak temperatures ; Pozzolanic materials ; Structural models ; Temperature rise ; Test results ; Thermal cracking ; Concrete construction ; Cracking (chemical) ; Fuels ; Hydration ; Model structures ; Models ; Portland cement ; Structural design ; Thermochemistry ; Vegetable oils
  8. Source: Procedia Engineering ; Volume 14 , 2011 , Pages 1665-1671 ; 18777058 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S1877705811012860