Item |
Physical properties |
JIS standard values |

Density |
Absolute dry condition |
500kg/m3 |
Greater than 450, less than 550 |

Dry air condition |
600kg/m3 |
- |

Mass for construction calculations |
650kg/m3 |
- |

Strength |
Compression strength |
3.92N/mm2 (dry air) |
3.0N/mm2or greater |

Tension strength |
0.49N/mm2 (dry air) |
- |

Bending strength |
0.98N/mm2 (dry air) |
- |

Shear strength |
0.49N/mm2 (dry air) |
- |

Young's modulus |
1.72~103N/mm2 (dry air) |
- |

Heat |
Thermal conductivity* |
0.15W/mK (dry air) |
- |

Specific heat |
1047J/kgK (dry air) |
- |

Thermal resistance |
0.67m2K/W (100mm thick) |
5.3tm2K/W or greater (t = panel thickness (m)) |

Coefficient of thermal expansion |
7~10-6(normal temperature) |
- |

Sound |
Transmission loss |
40dB (100mm thick, at 1000Hz) |
- |

Water |
Single-surface water absorption coefficient |
12vol% (immersion of the bottom of a 10 ~ 10 ~ 30cm cuboid in 1cm of water for 21 days) |

Coefficient of water absorption on whole side |
33vol% (immersion of a 10cm cube to a depth of 3cm under water for 21 days) |

Dry shrinkage ratio |
0.05% or less |
0.05% or less |

Specific water vapor resistance |
5.33~103mhpa/g (at humidity of 84.5%) |
- |