12 мм Высокопрочное полипропиленовое волокно с защитой от трещин

Описание и отзывы

Характеристики

12mm high tenacity anti-crack  pp fiber 

Product Description:

WHAT are pp fiber ?

pp fiber specifically engineered for concrete are manufactured from man-made materials that can withstand the long-term alkaline environment of concrete. Synthetic fibers are added to concrete before or during the mixing operation. The use of synthetic fibers at typical addition rates does not require any mix design changes.

WHY Use pp fiber for concrete  ?

Synthetic fibers benefit the concrete in both the plastic and hardened state. Some of the benefits include:

· reduced plastic settlement cracks

· reduced plastic shrinkage cracks

· lowered permeability

· increased impact and abrasion resistance

· providing shatter resistance

Some synthetic fibers may be used as secondary reinforcement. (Hardened Concrete Performance Documentation Required.)

Packaging & Shipping

Size:3mm  6mm 9mm 12mm 18mm etc.

1kg/bag 20bag/bag;20" loads 8tons,40" 16tons

600g/bag

900g/bag

Certificate:

FAQ:

Q.Can fibre be used in structural concrete?

A.Yes,but it cannot be used to replace or supplement structural reinforcement .However,it can be used in conjunction with the steel to help reduce settlement cracking over structural reinforcement,particularly in deep sections such as walls and columns.

Q.Is it more cost-effective to use fibre instead of crack control steel mesh ?

A.Yes,polypropylene fibre is about half the cost of steel mesh per square metre of slab.There is also a saving in handling and an increase in site productivity ,as the mixer can reverse right up to the point of placing.

Q.Are any special finishing techniques required?

A.No,the concrete can be compacted and finished normally.Trowelling totally embeds the fibres in the concrete surface.Some fibres may be exposed where a textured finish is applied,but these quickly disappear.

Q.Can concrete with fibre be pumped?

A.Yes,fibre actually improves the pumping characteristics.

Q.Are movement joints necessary?

A.Yes,contraction joints are necessary and should be spaced at the normal intervals prescribed for an ‘unreinforced slab design’.

Q.What is the dosage rate for polypropylene fibres?

A.Normally 0.9kg/m³ for most applications.