Fire Safety Science Digital Archive

In Japan, common cable Penetration Sealing Systems (PSS) consist of calcium-silicate board, mineral wool and fire resistant putty. However such systems can not perform adequate earthquake resistance since these products are developed with the intention of providing fire resistance only. Calcium· silicate board is brittle and fire resistant putty has low adhesive strength - both materials are unsatisfactory for surviving earthquakes. Several new types of cable PSS use a flexible board, composite board (steel plate + ceramic mat) and adhesive putty. These systems are expected to show good earthquake resistance because they absorb vibration energy due to good elastic properties. In order to evaluate and compare the earthquake resistance of various cable PSS, full scale vibration tests and fire simulation tests were performed.. The vibration tests used dynamic structural testing equipment; which utilized a 3-axes shaking table. Fire tests were conducted after vibration tests by immersing the samples into a large scale furnace.