ABSTRACT

Mortar was prepared with aggregate of FRP fine powder as well as sirasu baloon. The mortar containing FRP as part of the aggregate became more lightweight by heating at 200°C, when its flexural strength increased up to 2.5 times and its compressive strength upto 3.5 times. Improving of the flexural strength and deflection of the FRP mortar was tested by reinforcing with fibers (fly ash, asbestos, Vinylon, polypropylene fibers and carbon fibers). Among the reinforcing fibers, asbestos was the most effective. Partial replacement (10~30%) of ordinaly portland cement by silica fume also incresed the compressive strength. Finally it resulted in the preparation of lightweight high-strength mortar with a bulk density of 1.0g/cm3, aflexural strength of 7.1MPa, and a compressive strength of 41MPa.