| abstract |
An object of the present invention is to provide a honeycomb structure having improved durability in a honeycomb structure in which a plurality of honeycomb segments are integrally bonded. A plurality of honeycomb segments 12 having an outer wall 7, a partition wall 2 disposed inside the outer wall 7, and a plurality of cells 3 partitioned by the partition wall 2 and penetrating in the axial direction; A bonding layer 8 provided between the plurality of honeycomb segments 12 to join and integrate the honeycomb segments 12; And an intermediate layer 9 provided between the bonding layer 8 and the honeycomb segment 12. The honeycomb structure 1 is provided. In the honeycomb structured body 1, in the intermediate | middle layer 9, the pore of 0.5 micrometer or more in diameter is 25 volume% or less with respect to the whole volume of an intermediate | middle layer. |