Machines. Technologies. Materials.
Vol. 12 (2018), Issue 10, pg(s) 407-411

An approach to the estimation of the post-fire state of steel reinforced concrete structures

  • 1 Institute of Mechanics – Bulgarian Academy of Sciences

Abstract

The paper proposes a complex assessment of the post-fire state of steel reinforced concrete structures. It covers a combined usage of mechanical tests (core cutting and testing), non-destructive assessment of concrete strength, indirect physical (ultrasonic) methods and direct physical methods (X-ray structural and differential- thermal analyses). The complex analysis of the results enables one to assess the state of the structure and outline means of its strengthening, thus guaranteeing further flawless operation..

Keywords

References

  1. fib CEB-FIP (International Federation for Structural Concrete) Bulletin 59 Condition control and assessment of reinforced concrete structures (State of the Art Report), Task Group 5.8, May, 2011, Swiss
  2. БДС EN 13791:2007 “Оценяване якостта на натиск на бетона на място в конструкции и готови бетонни елементи”
  3. БДС EN 13791:2007/NA:2011 “Оценяване якостта на натиск на бетона на място в конструкции и готови бетонни елементи. Национално приложение (NA)”
  4. БДС EN 12504-2:2012 “Изпитване на бетон в конструкции. Част 2: Изпитване без разрушаване. Определяне на големината на отскока”
  5. БДС EN 12504-4:2005 „Ултразвуково определяне на еластичния модул на бетона по безразрушителен метод”