Loading...

Exprimental Study of Repair of Low Quality and Damaged Concrete in Reinforced Concrete Bridge Columns

Shokri, Mohammad Reza | 2011

695 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 42850 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Joghatae, Abdolreza
  7. Abstract:
  8. This study presents the experimental investigation, the effect of cement based chemical materials (Portland cement as a repair material No1. and 2 other cement base chemical materials) to upgrade the structural behavior of reinforced concrete slabs built with low quality (porous) concrete. Because materials used in this study are cement base it is expectable to behavior same as base concrete that its result is better compatibility with base structure against external factors. Other advantages of the use of these materials are consideration of economical and construction aspects. A total of four reinforced concrete column (200x200x800 mm) with low quality (porous) concrete have been built, that represent concrete with no proper vibration. One specimen was used as reference and other Three specimens were repaired with cement based chemical materials. Then all of them first tested with non-destructive technique (ultrasonic test), repaired and finally tested again with ultrasonic device, destructive test applied by an increasing eccentric loading. The experimental results show that the use of cement based chemical materials caused a significant increase in bearing capacity, maximum deformation and energy absorbing properties of the columns. The porosity of all samples decreased. So that the bearing capacity of M1, M2 and M3 increased, 8%, 54% and 23% respectively, compared to control sample. The maximum deformation, 18%, 31% and 25% increase respectively.

  9. Keywords:
  10. Repairing ; Concrete Column ; Ultrasonic Test ; Cement Base Chemical Materials ; Low Quality Concrete

 Digital Object List

  • محتواي پايان نامه
  •   view

 Bookmark

No TOC