Nowadays, recycling of waste materials is one of great attention among all industries. Especially, the waste tires become a significant problem with increasing in a number of automobiles. For recycling of the waste tires, a polyurethane binder was mixed with the scrapped rubber powders obtained from tread part of the waste tire. This study covered the effect of processing conditions;curing temperature and curing time;on the mechanical properties of the blend. We also compared the experimental results from labors-tory scale with those from scale-up.