26-04-2012, 10:52 AM
FIBRE REINFORCED POLYMER - NEW AGE CONSTRUCTION MATERIALS
FRP PPT(ARIF).ppt (Size: 834 KB / Downloads: 246)
INTRODUCTION
Fiber reinforced polymer (FRP), a new construction materiel with proven structural application, is showing increased use in our country
Fiber reinforced polymer composite materials were first developed in the early 1940s for military and aerospace applications.’ Their first use in reinforcing concrete structures was in the mid-1950s.
THE DESIRABLE PROPERTIES OF FIBERS AND MATRIX
Fiber Reinforcements: The most common types of fibers used in advanced composites for structural applications are:
Glass Fibers
Carbon Fibers
Aramid Fibers
FILLERS:
The three major types of fillers used in the composite industry are the calcium carbonate, kaolin, and alumina trihydrate.
ADDITIVE:
The additives can be divided into three groups -- catalysts, promoters, and inhibitors; coloring dyes; and, releasing agents.
CONCLUSION
The reasons why composites are increasingly used as strengthening
materials of reinforced concrete elements may be summarized as
follows:
immunity to corrosion;
very high strength/weight ratio,
resulting in easier application in confined space and reduction in labour costs;
very high tensile strength ,large deformation capacity; and practically unlimited availability in FRP sizes and FRP geometry and dimensions.