- Author
-
Saito, H.
- Title
- Explosive Spalling of Prestressed Concrete in Fire.
- Coporate
- Building Research Inst., Tokyo, Japan
- Report
-
BRI Occasional Report No. 22,
June 1965,
18 p.
- Keywords
-
prestressed concretes
|
explosives
|
spalling
|
thermal stresses
|
reinforced concretes
- Abstract
- The paper presents the results of the theoretical analysis of explosive spalling mechanism of precast- and prestressed concrete members in fire. The explosive spalling is not caused by the steam pressure of the heated water within concrete voids but caused by thermal stress of concrete near the surface. As the distribution of temperature in concrete near the surface is not linear, thermal stress occurred. The explosive spalling does not occur until thermal stress becomes a greater than compressive strength of concrete.