Concrete Fibers

WHY FIBERS IN CONCRETE? It is widely accepted within the concrete industry that traditional concrete mixes are prone to plastic shrinkage during the setting phase and this can often lead to cracking. The addition of relatively small amounts of concrete reinforcement fibers can effectively reduce this problem by controlling this early-age plastic shrinkage cracking. Concrete reinforcement fiber also avoids the need for using light steel mesh for crack control with its attendant disadvantages of handling and positioning. Fiber reinforced concrete is easy and cost effective and and it also enables you to produce a hardened concrete which has : - Improved surface quality - Greater impact resistance - Increased durability WHY ANTI-CRAK? Anti-Crak Concrete Reinforcement Fibers are alkali resistant glass fibres, especially developed for the reinforcement of cementitious mortars and concrete mixes. They can be easily introduced into a conventional concrete mix giving millions of dispersed fibers per cubic meter of concrete, providing a highly uniform and effective concrete fiber reinforcement. Anti-Crak fibers give you :

• High modulus of elasticity for effective long-term reinforcement, even in the hardened concrete.
• A reinforcing material which does not rust nor corrode and requires no minimum cover.
• Ideal aspect ratio (i.e. relationship between fibre diameter and length) which makes them excellent for early-age performance.
• A fibre which is safe and easy to handle and does not protrude through the finished surface nor sink.

Properties : ANTI-CRAK HD (High Dispersion) These concrete reinforcement fibers are designed to be used with normal concrete mixes at very low addition levels - typically 0.6kg/m3 (Mb/yd3) of concrete. Added directly to the mixer or ready mix truck they disperse instantly within the concrete. This complete uniform dispersion ensures a three dimensional reinforcement throughout the matrix and thus an effective suppression of cracking during the plastic shrinkage period. The large number of filaments gives a very small distance between fibers whilst the high aspect ratio gives maximum effect in the setting period. Anti-Crak High Dispersion fibers can be simply added to the mix either on site or at the mixing plan: without the need of a special equipment Standard concrete mix designs are used. Extended mixing times are not necessary. ANTI-CRAK HP (High Performance) These fibers are normally used at higher addition levels - usually from 3-IOkg/m3 (5-l7lb/yd3) of concrete. Anti-Crak High Performance fiber is a highly integral product which is resistant to fiber bundle breakdown in concrete mixing - useful when mixing time and conditions are variable. This physical form enables a higher rate of addition to be achieved without adversely affecting workability although conventional superplasticisers may be used to improve workability. Ideal for improving performance of both in situ and precast concrete as well as renders Anti-Oak. High Performance fiber give :

• Greater retained toughness in conventional concrete mixes
• Increased impact strength and abrasion resistance
• Higher flexural strength, depending on addition rate

FLOOR SCREEDS / SUBS ON GROUND : Floor screeds/Slabs on ground are used in various forms, ranging from very thin 10 mm (3/8in) final floor toppings to layers of greater thickness up to 80 mm (3m) which may be used for encapsulating heating elements. In all cases the superior impact and crack resistance of fiber reinforced screeds enables them to be laid more thinly than conventional screeds whilst giving better performance. Anti-Crak fiber content may be relatively high (1%) in the thinnest screeds, and less than 1 kg/m3 (2lb/yd3) in thicker forms. READY MIX CONCRETE : For control of early plastic shrinkage cracking and general improvement of concrete, Anti-Crak fiber is effective at any addition rate as low as 0.6kg/m3 (1 lb/ yd3) and is added to normal concrete mixes without any change in formulation. A particular benefit of glass fiber, however is that its easy mixing characteristics allow addition of higher dosages. for example up to 10 kg/m3 (17lb/yd3) and at these levels of addition the hardened, long-term properties of the concrete are usefully improved. PRECAST CONCRETE : Small additions of Anti-Crak fibers can be used in precast concrete components to effect useful improvements. For example, in conventional steel reinforced precast cladding panels or civil engineering elements, the addition of only 2-4 kg/m3 (4-7lb/yd3) of Anti-Crak in concrete, can give benefits of avoidance of cracking, elimination of edge or demoulding damage. and an improvement in surface finish and appearance. At higher addition rates, for example 18kg/m3 (30 lb/ yd3) of concrete, Anti-Oak HP fibers can be ttoe sole reinforcement, without the need for conventional steel mesh, in small precast items such as channels and boxes. RENDERS / STUCCO : Anti-Crak fiber, with an addition rate of 0.05% of HD up to 1.5% of HP contributes to a highly successful render/stucco system. Applied by either spraying or trowelling to a thickness of 4-10 mm (l/8-3/8m). the finished render has superior resistance to impact and shrinkage cracking and is less permeable to water than normal sand-cement render, fiber reinforced render/ stucco is also used in dry blockwall construction and external insulation systems. In many cases Anti-Crack fiber is dry-blended with other mix components and the whole supplied to the site in bagged form. GUNITE / SHOTCRETE : Anti-Crak fiber at up to 1% by weight of total rrvx can be added to normal sprayed concrete mixes, giving a crack resistant and impact resistant lining from a relatively thin layer compared with normal sprayed concrete. Both dry guniting and wet sprayed concrete process can utilize Anti-Crak fiber reinforcement. Major benefits of Anti-Crak glass fiber compared with other fiber types are reduced rebound and wastage, and a non-hazardous surface which does not need a final protective coat. ANTI-CRAK FIBERS : High Tensile Strength (1700 Mpa) 3-4 times higher than that of steel. High Elastic Modulus 10 times that of polypropylene. Excellent Corrosion Resistance Alkali and acid resistant. Do not rust. Easy to Incorporate Do not protrude or spring back from the surface Disperse instantly in the concrete. Safe to Use Inorganic, incombustible, with no health risk.

With the support of extensive vendor base, we offer to our clients concrete admixtures. This is the concrete fiber product used in the building construction. Our concrete fiber mixtures are highly suitable in floor designing and layouts and building wall construction. Concrete fibers offered by us are known for the features such as  high stress resistance, moist proof and excellent bonding capacity. We offer our concrete mixtures to the customers at competitive prices.  

Anti Crak Fibre

ADVANTAGES AND BENEFITS:
• High dispersion (220 million filaments per kg, 100 million per lb)
• Excellent workability
• Invisible on the finished surface
• Does not corrode
• Control and prevention of cracking in fresh concrete
• Overall enhancement of durability and mechanical properties of concrete
• Effective at very low dosage
• Homogeneous mix
• Safe and easy to handle