| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a half-precast synthetic floor slab which does not easily explode. <P>SOLUTION: The half-precast synthetic floor slab (HPC floor) is formed by using a precast concrete board (PC board) 1 as a bottom form and placing and forming cast-in-place concrete 2 on the upper part, a cavity as a void 3 is formed at the boundary part of the PC board and the cast-in-place concrete, and at least a void lower part facing the void of the PC board is formed as a pseudo crack generation part 7 capable of generating pseudo cracks and suppressing an explosion in a fire. It is preferable that the pseudo crack generation part is formed by blending organic fibers longer than the maximum diameter dimension of a coarse aggregate blended in the PC board. It is preferable to install an excellently heat conductive member performing a heat radiating action from the PC board to the cast-in-place concrete inside the void. <P>COPYRIGHT: (C)2012,JPO&INPIT |
