1. Technical Features
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High Strength: Develops high early and ultimate compressive strength to match or exceed the host concrete.
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Shrinkage Compensated: Contains additives that prevent shrinkage during the curing process, ensuring a crack-free repair.
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Flowable: Self-compacting consistency ensures it fills all voids and honeycomb pockets without honeycombing.
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Durable: Provides excellent protection to embedded steel reinforcement.
2. Design & Application Criteria
As per the specifications provided:
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Standard Application Thickness:
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Up to 100mm: Can be applied in a single pour for sections up to 100mm deep.
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Deep Section / Large Volume Repairs:
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Over 100mm: For sections deeper than 100mm, the mix should be modified by adding approved aggregates (typically 5mm to 12mm clean, sealed, and graded aggregates).[6]
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Ratio: The specific quantity of aggregate addition depends on the configuration of the repair location and should follow the manufacturer’s specific mixing ratios (often 50% to 100% by weight of the powder, depending on the brand).
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3. Surface Preparation (Standard Practice)
To ensure the success of the repair:
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Clean: The substrate must be sound, clean, and free of loose material, oil, or grease.[3]
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Pre-soak: The area should be pre-soaked with water (Saturated Surface Dry – SSD condition) before pouring to prevent the old concrete from absorbing moisture from the new micro-concrete.
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Formwork: Watertight formwork is essential as the material is highly fluid and will leak through small gaps.
4. Availability in Bangladesh
This type of Micro Concrete is widely available through construction chemical suppliers in Bangladesh (such as Home design & care Construction, Fosroc, Sika, or MYK Arment). When ordering, specify “MCR MICROCON-CRETE” or “High-Strength Micro Concrete” to ensure you receive the correct flowable grade material.
Micro Concrete Repair Bangladesh (MCR MICROCON-CRETE)
High-Strength, Free-Flowing Cementitious Micro-Concrete for Structural Repair
Description:
Micro Concrete Repair (MCR MICROCON-CRETE) is a high-performance, pre-packed, cement-based micro-concrete specifically engineered for structural repairs of reinforced concrete elements. This free-flowing, shrinkage-compensated formulation is ideal for inaccessible areas, jacketing, or repair of overhead and vertical surfaces without the need for vibration.
Formulated with premium-grade Portland cement, graded fillers, and specialized additives, MCR MICROCON-CRETE ensures high early and ultimate strength, superior durability, and excellent thermal compatibility with host concrete. Its low water demand minimizes shrinkage, and it can be extended with coarse aggregates for large-volume repairs.
Ideal for both commercial and industrial concrete rehabilitation, Micro Concrete Repair (MCR MICROCON-CRETE) guarantees consistent performance and cost-effective application.
Technical Data Sheet:
| Property | Typical Result |
|---|---|
| Appearance | Grey, free-flowing dry powder |
| Water/Powder Ratio | 0.16 (by weight) |
| Compressive Strength (N/mm²) | 1D: 24, 3D: 45, 7D: 55, 28D: 65 |
| Flexural Strength (N/mm²) | 1D: 2.5, 3D: 7.0, 7D: 9.0, 28D: 10.0 |
| Tensile Strength (28 days) | 3.5 N/mm² |
| Young’s Modulus | 28 kN/mm² |
| Thermal Expansion Coefficient | 11 × 10⁻⁶ /°C |
| Fresh Wet Density | 2100–2200 kg/m³ @ 27°C |
| Max Application Depth (per layer) | 100 mm (extendable with graded coarse aggregate) |
| Shelf Life | 6 months (stored in dry, sealed condition) |
| Yield | ~10 liters per 25 kg bag |
| Packaging | 25 kg moisture-resistant bags |
| Workability | Excellent flowability (self-compacting) |
| Health & Safety | Alkaline when wet – PPE required |
Recommended Uses
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Repair of damaged reinforced concrete structures
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Encasement and jacketing of structural elements
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Beam, column, and slab rehabilitation
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Applications where vibration is not possible
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Large section concrete repair when mixed with coarse aggregate
Mixing & Application
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Mix only with clean potable water (W/P = 0.16).
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For repairs deeper than 100 mm, add 5–12 mm SSD graded coarse aggregates.
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Place using gravity feed or pump into properly prepared and pre-wetted formwork.
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Maintain a minimum unrestrained surface area and apply bonding agent or primer where needed.
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Do not exceed water dosage.
Micro Concrete Repair
Precautions & Safety
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Wear gloves, mask, and goggles during mixing and application.
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Avoid contact with eyes and prolonged skin exposure.
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In case of ingestion or eye contact, seek medical advice immediately.
Need Technical Support?
Home Design & Care Construction provides full on-site support, training, and technical consultation. For assistance, reach out to:
Email: homedesigncare@gmail.com
Facebook: https://www.facebook.com/HomeDesignandCare/
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