MRheobuild 918 | MCT CHEMICAL | MASTER BUILDER SOLUTION

Usage and Application

MRheobuild 918 is a high-performance, water-reducing superplasticizer designed for use in a variety of concrete applications that require enhanced workability and strength. It is ideal for producing high-strength, durable concrete with superior flowability and low segregation.

Key applications include:

• High-Performance Concrete: For use in applications demanding high compressive strength, such as in precast concrete, structural concrete, and high-rise buildings.
• Ready-Mix Concrete: Ideal for ready-mix concrete plants where consistent workability and uniformity are essential.
• Mass Concrete Pouring: Reduces heat generation during curing and ensures improved handling during large-scale pours.
• Pumped Concrete: Enhances the flow of concrete through pumps, reducing the pressure needed for long-distance pumping.
• Microsilica Concrete: Perfect for use in high-performance concrete mixes, including microsilica and ultra-high-strength mixes.
• Casting in Hot Climates: Helps maintain workability in hot conditions, preventing early setting and extending workability time.
• Long-Distance Concrete Transport: Suitable for applications where concrete needs to be transported over long distances without losing its consistency.

Coverage

• MRheobuild 918 is typically dosed at 0.8 to 2.0 liters per 100kg of cement, depending on the specific requirements of the mix. This dosage ensures optimal water reduction and workability enhancement for most standard concrete applications.
• The actual coverage will depend on factors such as cement type, mix design, and environmental conditions, and it is recommended to conduct trial mixes for the best results.

Advantages

1. Improved Workability
MRheobuild 918 significantly enhances the flow and ease of placement of concrete, making it easier to handle, especially in complex or congested formwork.

2. Water Reduction
It reduces the water content in the mix while maintaining the desired workability. This results in stronger concrete, reduced shrinkage, and enhanced durability.

3. High Strength
By improving the quality of the concrete, MRheobuild 918 contributes to increased compressive strength and overall performance, making it ideal for structural applications.

4. Extended Workability
The superplasticizer allows for extended workability, which is particularly useful for long-distance transport, large pours, or when working in hot weather.

5. Reduced Thermal Effects
It helps in controlling the heat of hydration during mass concrete pours, reducing thermal cracking and improving the long-term durability of the structure.

6. Better Pumpability
MRheobuild 918 improves the flow of concrete, reducing the pressure needed for pumping and allowing for easier transport and placement, particularly for high-strength mixes.

7. Improved Durability
By reducing the permeability of the concrete, MRheobuild 918 enhances the durability of the finished structure, providing better resistance to environmental factors such as freeze-thaw cycles, aggressive chemicals, and moisture.

8. Chloride-Free
MRheobuild 918 is chloride-free, making it suitable for use in reinforced concrete applications, as it eliminates the risk of corrosion associated with chloride-based admixtures.

9. Versatility
It is compatible with a wide range of cements and other chemical admixtures, allowing it to be used in diverse concrete applications, including those requiring air entrainment or other special properties.

10. Compliance with Standards
MRheobuild 918 meets various international standards, making it suitable for use in a wide range of projects that require certification and compliance with quality assurance systems.

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