Taishan Black Number 1 Physical Properties of “Taishan Black Number 1 Specific Gravity: 3028kg/m3 Shore Hardness: 82 Linear Expansion Co-efficient: 3.961X10-0/’C Compressive Strength: 252.7Mpa Elastic Modulus: 7.74 X 100Mpa Water Absorbtion: 0.037%