Abstract : The possibility of using mix of some industrial scraps such as reclaim or cement
waste and lamp black as reinforcement in natural rubber/styrene–butadiene rubber
(NR70/SBR30), were explored as an alternative filler to prepare batches that it used in fender
ship application. Mix of reclaim or cement waste and lamp black used in this paper as additives
or fillers to study some of the mechanical properties of NR70/SBR30 blends. Eight different
compounds were prepared from SBR30 pphr, NR70pphr and 4 loading level from cement waste
(C.W) (0,10,20,30) pphr, reclaim (0,10,20,30) pphr and carbon black (C.B) 50 pphr. The
hardness, tensile strength, tear résistance, elongation, elastic modulus, fatigue, and specific
gravity have been studied in this research. The results of some of these properties are increasing
with the increment of mix of C.B and reclaim loading, such as tear resistance, damping time
and resilience, while specific gravity, tensile strength, tear resistance, elastic modulus fatigue,
elongation, were decreased with increment mixed of C.B and reclaim loading %. On other
hand, in the cement waste loading found that hardness, elastic modulus, wear was increasing
with increase loading level, whereas, elongation, tear, tensile, specific gravity, fatigue,
resilience, damping time were decreased with increasing loading level.