| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide concrete capable of suppressing human suffering inside a building by not only restraining the large-scale destruction of the building from being caused by the explosion of an explosive substance such as powder but also restraining broken pieces of concrete from scattering due to the shock of the explosion. <P>SOLUTION: In this concrete structure excellent in resistance to explosive fracture, a plurality of concrete boards are stacked together. Particularly desirably, fibers, the tensile strength of which is 1.5 GPa or more and the tensile modulus of elasticity of which is 50 GPa or more, are mixed into the concrete structure at a volume ratio of 1.0% or more. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
