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Our Construction Fibre

Our Dedication to Quality

Our Quality and Performance: The use of straw to reinforce bricks dates back to Egyptian time when horse hair was commonly used to reinforce lime / sand plaster until 1950s, and asbestos, until recently was used for around 100 years as a cement reinforcement for sheets or fiber-proofing products.

Is polypropylene 21st century straw?

Polypropylene is a relatively modern product with a large molecule built up by a repetition of small, simple chemical units until a polymer chain is formed. Polypropylene fibers as a secondary reinforcement, nowadays, are being used extensively throughout the world in all types of constructional concrete. Firstly, they have been proven as an effective method of controlling troublesome shrinkage in concrete. Then, after curing, the presence of fibers increases, the concrete long - term durability and toughness. Our monofilament fibers, which are produced from 100% virgin mono-polymer polypropylene, comply with the requirements of ASTM - C1116 and are developed as a crack - controlling additive for cementations materials. It is available as monofilament 20 in length for concrete reinforcement and 6mm and12mm in length for plaster and mortar. PP fibers are true monofilaments that totally disperse into the concrete mixing when added at the batch plant or at the job site.

Rocket Polypropylene fibers play vital role in plastering

* Plastering is a process of applying one or more coats of mortar to a concrete surface, brickwork, stone masonry. It must be durable such that it resists the penetration of
* moisture and should be able to weather uniformly. It should be also pleasing in appearance.
* These properties depend upon materials used , composition of mix, degree of mechanical bond between the plaster and the backing surface and workmanship.
* Lack of bond with the backing more so when chicken mesh is used , cracking , crazing of surface and discoloration are principal defects in plastering
* Roman Coliseum was built with fiber reinforced structure in 80 AD, they used horse-hair as fibers.
* Tipu Sultan’s palace at Srirangpattnam has been built with Sheep,s wool
* A Pueblo house built in 1540 with straw reinforcement adobe brick is believed to be the oldest house in USA
* Use of horsehair in plaster
* Have you not seen mud wall in villages with straw reinforcement ?
* Fibres provides 3 dimensional secondary reinforcement

Advantages of Rocket Polypropylene Fibers

* Reduces rebound loss by 50-70%
* Checks dampness, saves on repairing cost
* Improves shatter resistance in walls
* Checks crack propagation while cutting grooves for conduit laying
* 1kg of Rocket Fibers contains 14 crores of fibers.
* One pouch of 90 gms contains 1.25 to 1.5 crores of fibers.
* One sq. ft of plaster contains almost 5 to 15 lakhs of fibers which forms a mesh and gives 3 dimensional secondary reinforcement.

Rocket Polypropylene fibers are very stable in alkaline medium. As our cement is an alkaline medium the Rocket polypropylene fibers are very stable in this medium. They are hydrophobic and get dispersed in water very easily. Hence they get mixed with the mortar homogeneously.

Dosage

Plaster: Use 6mm/12mm @ 90gms / cement bag in 1:4 cement / sand ratio
Concrete: Use 20mm@ 600gms /cubic metre

Savings

1) Rebound loss reduced by 50 to 60%
2) Less time required for Finishing of Plaster so saving in labour time.
3) Protects Chipping of edges and controls cracks.
4) No dry cement required for finishing the plaster, hence overall saving of 10% in cement required for overall project plaster. So the cost of fibers is nullified.

 

 

For further information and research papers on fibers click on this link:

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Polypropylene fibers 6 MM

Polypropylene fibers 12 MM

Polypropylene fibers 20 MM

Technical Properties

Appearance

Specific gravity

Diameter (din 53816)

Tensile strength

Melting range

OPU

Crimp waves /cm

Thermal conductivity

Electrical conductivity

Salt, acids and alkaline resistance

Natural White

0.91 gr/cm3

40 microns and higher (based on fiber usage and client request)

350 MPA

160 c0 - a65 c0

0.5% (Method, Henkel)

0 crimps/cm

LOW

LOW

HIGH

Concrete Permeability Tests

Cement

Sand

Course aggregate

Medium aggregate

Water

Super Plastericisers

Fibers

6 Kg

20kgs

15.2 Kgs

3.2 Kgs

3 Kgs

30 gr (ASTM C-494 Type F)

A) 0g pp Fibers 20mm

B) 18gr pp Fibers 20mm

Test Result

ASTM SLUMP

 

A) Time 0':20 cm, 45': 16 cm

B) Time 0':19 cm, 45': 14cm

Compressive Strength 15 x 15 x 15 cm cubes

A) 3 Days : 24.8 MPA, 7d: 30.2 MPA, 28d: 36.4 MPA

B) 3 Days : 25.3 MPA, 7d: 32.1 MPA, 28d: 40.2 MPA

Flexural Strength

A) 28 Days : 4 MPA

B) 28 Days : 4.8 MPA