This project aimed to compare the effective of blocks mixed with sawdust and rubber blocks mixed rice husk ash. Then,We tested the mechanical and physical properties of two types of the rubber blocks: Tensile strength,Elongation at break (%), modulus 100%, modulus 300%, Hardness, Tear strength And compare those values with TIS.The results demonstrated rubber block mixed sawdust was more efficiency that the rubber blocks mixed with rice husk ash