Polypropylene fiber reinforced concrete is also known as polypropene or PP. It is a synthetic fiber, transformed from propylene, and used in a variety of applications. These fibers are usually used in concrete to control cracking due to plastic shrinkage and drying shrinkage. They also reduce the permeability of concrete and thus reduce the bleeding of water. Polypropylene fiber belongs to the group of polyolefins and is partially crystalline and non-polar. It has similar properties as polyethylene, but it is harder and more heat resistant. It is a white rugged material with high chemical resistance. Polypropylene is manufactured from propylene gas in the presence of a catalyst such as titanium chloride. Polypropylene fiber displays good heat-insulating properties and is highly resistant to acids, alkalies, and organic solvents.
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Significantly improves shrinkage and temperature crack control Safer and lighter to handle than steel Reduces carbon footprint Reduces explosive spalling Reduces plastic settlement Reduces permeability Unlike steel, doesn't stain concrete with rust marks Potential for increase in joint spacing Increases flexural strength Increases impact resistant Increases residual strength Increases fatigue resistance Increases tensile strength Increases energy absorption Increases ductility Increases toughness Increases post crack load capacity