This paper describes an experimental investigation on the mechanical,
physical and thermal expansion properties of cement reinforced with Roselle
fibres. The short discrete fibre length of (5-7mm) were used as reinforcement
which were randomly oriented and uniformly distributed in the cement matrix and
with various volume fraction of fibre cement ratio of (0-4%). The flexural
strength, fracture energy, and thermal expansion of composites were found to
increase as the fibre volume fraction was increased, while the elastic modulus was
decreased, and also the results of the physical properties showed that a
lightweight construction materials was obtained.
Key ward : Roselle Fiber , Flexural strength , Fracture Energy , Elastic
Modules , Thermal Expansion , Reinforced Cement Composites .