Which fiber is best for concrete?
Synthetic micro-fibers Micro-fibers have a diameter less than 0.3 mm and are either monofilament or fibrillated. Micro-fibers should be used for plastic shrinkage control (cracking that can occur in the first 24 hours of concrete curing), impact protection, and reduction of explosive spalling during a fire.
What does fiber mesh do for concrete?
The purpose of fiber mesh is to reduce water loss from the concrete as well as enhance its structural integrity. This type is also used to create a higher impact resistance in the concrete, prevent thawing, and increase its strength.
Is fiber mesh concrete good?
The fiber mesh strengthens the concrete and the steel rebar reinforces the extra load areas. Fiber mesh can adversely affect the finish depending on whether you want a swirl finish, boom finish or exposed aggregate stone finish. The fiber mesh is good stuff but can stick up above the concrete surface and look fuzzy.
Will fiber concrete crack?
Yes Fibermesh micro-synthetic fibers inhibit cracks caused by internal stresses. These internal forces that develop in the first 24 hours of curing can result in cracking due to the settlement, shrinkage, restraint and, in some cases, vibration. These cracks do not disappear when the concrete hardens.
Can you see fiber mesh in concrete?
No Fibermesh fibers in concrete are purely mechanical in nature and, therefore, have absolutely no impact on the setting time of concrete. The setting time is a chemical function impacted by factors such as time and temperature.
Do I need rebar in concrete with fiber?
Fiber concrete still needs reinforcements with rebar. We are doing 1/2 million sq ft slabs meant for warehousing, and they are all fiber reinforced. Diamond dowels at expansion joints. No rebar required.
Does fiber mesh replace rebar?
Fiber is for shrinkage cracking while the concrete cures. It is not a substitute for rebar or wire mesh and does not serve the same functions. You can sometimes get away with it on pedestrian areas like a patio or sidewalk.
Is fiber in concrete better than wire mesh?
In addition to providing a more thorough protection for your concrete pour, fiber mesh typically takes less time than wire mesh to use. Fiber mesh is also more cost-effective since there is less time involved in pouring and the material is used more efficiently.
Can I use fiber mesh instead of rebar?
Overall, according to Propex Concrete Solutions (which manufactures Fibermesh), Fibermesh can be used in residential, commercial or industrial applications as the primary form of reinforcement without a rebar skeleton.