Concrete Hardener

R Tech Dry Shake Floor Hardener

Worker adding polypropylene fibers into a cement mixer on construction site — A construction worker adds polypropylene fibers to a cement mixer at a building site

R Tech Dry Shake Floor Hardener

R Tech PP Polypropylene Fiber is a high-performance, 100% virgin polymer multifilament micro-fiber engineered specifically for concrete and mortar reinforcement. Designed to distribute evenly throughout your mix, These fibers form an internal multi-directional matrix that controls cracking before it starts. Whether you are working on industrial flooring, external plastering, or precast concrete elements, R Tech PP Fiber delivers unmatched structural integrity and long-term durability.

Polypropylene is the lightest synthetic polymer. Hence the count of fiber for a given weight is maximum in case of polypropylene. It is 52% lighter than polyester and 26% lighter than nylon and
acrylic. Hence polypropylene fibers are ideal for reinforcement.

R-TECH Polypropylene (PP) Construction Fibers feature proprietary chemical surface treatments engineered to maximize dispersion and chemical-mechanical anchorage within cementitious matrices

Monofilament Separation & Uniform Matrix Integration: The advanced chemical treatment breaks surface tension, preventing fiber balling or clumping during mixing. This allows millions of individual strands to disperse uniformly, forming a dense, three-dimensional micro-reinforcement network

Superior Interfacial Bond Strength: The modified surface chemistry enhances physical and chemical adhesion to the surrounding hydrated cement paste, increasing shear load transfer and improving pull-out resistance.

Universal Admixture Compatibility: Fully compatible with all conventional and high-range water reducers, superplasticizers, retarders, and pozzolanic admixtures (such as silica fume and fly ash) without altering chemical hydration reactions or entraining unwanted air.

Optimized Rheology & Mix Workability: Rapid multi-directional dispersion ensures seamless incorporation during batching—whether in high-shear mixers or Ready-Mix Concrete (RMC) truck drums—maintaining design workability without requiring additional water demand.

These are available in 6mm, 12mm, 24mm, 50 mm and mix/Hybrid also.

Why Choose R Tech PP Fiber

Crack Prevention

High Tensile Strength

100% Virgin Polymer

Fire & Freeze-Thaw Resistance

Alkali & Chemical Resistant

Cost- Effective

R Tech PP Fibers Sizes and Use

General Sizing Rule recommended Length:
Fiber Length > Maximum Size of Aggregate (MSA)
For optimum reinforcement, the fiber length should exceed the largest aggregate size used in the mix to ensure individual strands can anchor properly around the stones

Micro (3mm-6 mm) (1/4″)
Target Aggregate: Fine sand / no coarse aggregates.
Best For: Thin finishing plaster coats, ornamental castings, renderings, and surface micro-crack prevention. Easy hand-mixing dispersion without fiber balling.

Medium (12mm)
Target Aggregate: Sand and micro-aggregates(< 10 mm).
Best For: Mortar mixes with application thickness (<10 mm) screeds, structural repair mortars, external plastering, and waterproofing coats.

Standard Concrete Lengths (24 mm – 36 mm)
24 mm – 25 mm (1″)
Target Aggregate: Standard coarse aggregates up to 19 mm – 20 mm.
Best For: Machine-mixed ready-mix concrete (RMC) and site-mixed concrete. Sits on the threshold between micro and macro reinforcement, preventing shrinkage cracking across standard slab thicknesses.
36 mm (1-1/2″)
Target Aggregate: Aggregates up to 25 mm.
Best For: Heavy-duty concrete structural mixes and blended multi-length formulations requiring increased tensile anchorage. Structural Graded Blends (24 mm – 50 mm Mix)
Graded Size Mix (e.g., 24 mm + 36 mm + 50 mm)
Best For: Heavy industrial flooring, load-bearing slabs, shotcrete/gunite, and replacing traditional light steel wire mesh.
Why It Works: Short fibers (24 mm) increase total fiber count per unit volume to prevent early plastic cracking, while long fibers (36 mm & 50 mm) provide deep structural anchorage and post-crack load transfer.

R Tech PP Fiber Technical Specifications

Parameter	Technical Value
Material Base	100% Virgin Polypropylene (PP)
Fiber Lengths Offered	6 mm, 12 mm, 24 mm, 36 mm, 50 mm, or Hybrid Blends
Fiber Diameter / Aspect Ratio	19 – 40 microns / High Aspect Ratio (up to 1200+)
Specific Gravity	0.91
Melting Point	164 (+or -2 Degree)
Ignition Point	360 (+ or -2 )
Chemical Resistance	100% Alkali-proof, High Acid & Salt Resistance
Standards Compliance	Conforms to ASTM C1116 / BS EN 14889-2

Comparison Parameter	R-TECH Micro PP Fiber	R-TECH Medium PP Fiber	R-TECH Std Grade	R-TECH Std Grade	R-TECH Structural	R-TECH Hybrid)
Product Grade / Code	R-TECH 06	R-TECH 12	R-TECH 24	R-TECH 36	R-TECH 50	R-TECH ST
Cut Fiber Length	6 mm (1/4″)	12 mm (1/2″)	24 – 25 mm (1″)	36 mm (1-1/2″)	48 – 51 mm (2″)	24 mm – 50 mm (Graded Blend)
Fiber Category	Micro-Fibre	Micro / Mortar-Grade	Hybrid Micro/Macro	Macro-Fibre	Macro-Fibre	Structural Graded Blend
Filament Diameter	19 – 28 microns	28 microns	28 microns	35 microns	40 microns	28 – 40 microns
Aspect Ratio (approx.)	215 – 315	429	857	1050	1200	1100 (avg)
Base Material	100% Virgin PP	100% Virgin PP	100% Virgin PP	100% Virgin PP	100% Virgin PP	100% Virgin PP
Specific Gravity	0.91	0.91	0.91	0.91	0.91	0.91
Melt / Ignition Point	162-360	162-360	162-360	162-360	162-360	162-360
Chemical Resistance	100% Alkali-Proof, High Acid/Salt Resistance	100% Alkali-Proof, High Acid/Salt Resistance	100% Alkali-Proof, High Acid/Salt Resistance	100% Alkali-Proof, High Acid/Salt Resistance	100% Alkali-Proof, High Acid/Salt Resistance	100% Alkali-Proof, High Acid/Salt Resistance
Max Aggregate Size (MSA)	Fine Sand (< 2mm)	Micro-Aggregates (<10mm	Coarse Aggregate (20mm)	Coarse Aggregate (25 mm)	Large Aggregate (37.5m)	Multi-Size Aggregates (20-40mm)
Primary Applications	Plasters, castings, thin Coating	Plasters screeds, repair mortars, waterproofing	RMC, site-mixed concrete, floor slabs	High-strength concrete Or blended custom formulations	Mass concrete, heavy foundation rafts, precast	Industrial floors, load-bearing slabs, shotcrete
Mixing Technique	Manual / Bucket Pre-dispersion or Machine	Manual Mortar & Machine Mixers	Machine Mixer / RMC Truck	Machine Mixer / RMC Truck	Machine Mixer / RMC Truck	Machine Mixer / RMC Truck
Dosage (Crack Prevention)	900 gm Per cubic meter		900 gm Per cubic meter	900 gm Per cubic meter	900 gm Per cubic meter	900 gm Per cubic meter
Dosage (Fire Spalling)	N/A	$1.0 – 3.0\text{ kg/m}^3$	$1.0 – 3.0\text{ kg/m}^3$	$1.0 – 3.0\text{ kg/m}^3$	$1.0 – 3.0\text{ kg/m}^3$	$1.0 – 3.0\text{ kg/m}^3$
Dosage (Primary Reinforcement)	N/A	N/A	$1.0 – 4.0\text{ kg/m}^3$	$1.0 – 4.0\text{ kg/m}^3$	$1.0 – 4.0\text{ kg/m}^3$	$1.0 – 4.0\text{ kg/m}^3$
Primary Performance Advantage	Highest surface strand density; eliminates fine plastic shrinkage cracks	Enhances green strength and lowers water permeability in thick mortar beds	Spans $20\text{ mm}$ aggregate gaps to prevent internal micro-cracking	High aspect ratio for deeper mechanical anchorage and tensile strength	Maximum pull-out resistance in large-aggregate structural mixes	Dual-action: short strands block micro-cracks; long strands provide load transfer
Steel Mesh Replacement?	No	No	Partial (light non-structural mesh)	Partial (light non-structural mesh)	Yes (secondary reinforcement)	Yes (replaces welded wire mesh in slabs/flooring)

Application

R-TECH PP Fibers — Comprehensive Mixing & Application Guide
Proper mixing ensures 100% uniform dispersion of R-TECH PP Fibers throughout the cementitious matrix, forming an interconnected 3D micro-reinforcement network without clumping or fiber balling.

Key Mixing Principles Before You Start

No Extra Water Required: Adding R-TECH fibers may appear to decrease the slump reading slightly due to increased matrix cohesion. However, workability and placeability remain unchanged. Do not add excess water, as this will alter the water-cement ratio and lower compressive strength.
Admixture Order: R-TECH fibers are hydrophobic and chemically inert. Superplasticizers, water reducers, or pozzolanic additives (e.g., silica fume, fly ash) should be added as per standard batching procedures.

Step-by-Step Batching & Mixing Procedures

1. Onsite Drum Mixers (Site-Mixed Concrete)

Initial Cleaning & Pre-wetting: Dose a small quantity of wash water into the empty mixer drum to clean out residue from the previous batch.
Add Fibres First: Add the required dosage of R-TECH Fibres directly into the rotating empty drum with the initial wash water.
Load Dry Materials & Water: Load dry coarse aggregates, fine sand, cement, and remaining batch water into the drum.
Mix: Continue normal mixing operation for 3 to 5 minutes until fibers are completely dispersed throughout the mix.

2. Ready-Mix Concrete (RMC) Trucks

Dosing: Add R-TECH Fibres in small lots directly into the rotating drum at the batching plant or at the jobsite before discharge.
High-Speed Mixing: Once dosing is complete, mix the truck drum at maximum speed (approx. 12–15 RPM) for an extra 20 to 30 revolutions (approx. 4–5 minutes).
Inspection: Inspect the concrete stream at discharge to confirm full multi-directional dispersion before pouring.

3. Manual / Hand Mixing (For R-TECH 06MM & R-TECH 12 MM For Mortars/Plasters)

Water Pre-Dispersion: Place the measured dose of R-TECH 6mm Micro or R-TECH 12mm fiber into a bucket of batch water.
Stir: Stir the water vigorously for a few seconds so individual fiber filaments unbundle and disperse evenly in the liquid.
Combine: Pour the fiber-water slurry evenly over the dry sand-cementitious mortar mix.
Blend: Hand-mix or paddle-mix thoroughly until a uniform, lump-free plaster/render mortar is achieved.

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