What is SUPER CRACKNON ?
Super Cracknon is an Alkali Resistant Glass fiber (ARG fiber) used to reinforce cement and other alkali materials and to limit crack propagation in mortar and concrete.
Why Fibers in Concrete?
Traditional concrete mixes are prone to plastic shrinkage during the setting phase and this can often lead to crazing and cracking.
The addition of relatively small amounts of fiber reinforcement to this mix can effectively minimize this problem by controlling this early-age plastic shrinkage cracking.
Fiber Modified Concrete Has :
• Improved surface quality
• Greater impact resistance
• Increased durability
Why SUPER CRACKNON ?
Super Cracknon can provide not only plastic shrinkage crack control but also it can control restrained drying shrinkage cracking. This is because of its high tensile strength, high Young's Modulus and excellent mixing characteristics that allow high fiber contents.
Is Your Glass Fiber AR?
Alkali Resistance (AR) is Key. The glass fiber must be resistant to the alkaline condition of the concrete. Only zirconia (Zr02) in the glass composition will provide true alkali resistance. Concrete is very alkaline and as such it will quickly corrode "E" glass fibers, the type of glass fibers that are used to reinforce plastics. For effective reinforcement only glass fibers that have been specially developed to be alkali resistant, such as those containing zirconia should be used, and not those dependent on a surface coating for corrosion protection. The higher the zirconia content the better the alkali resistance, which is why Super Cracknon has a minimum zirconia content of 19%.
