... airport, dam, prevent slope dike, retaining wall, etc. to improve stability.2.Protection: To prevent the bank from eroding by wind, ... dam, river and coast stone , slope, retaining wall to prevent sand grain through and allow freedom through of air ... fracture strength to203040506080 2A zonally breaking strength152228354256 3Jinwei to elongation284Trapezoidal bursting strength(longitudinal)0.30.450.50. ...