Merks M17 MX Powder: Crystalline Waterproofing Admixture for Durable Concrete Structures
Merks M17 MX Powder is a single-component, cement-based, polymer-modified waterproofing admixture designed for concrete structures. Its active chemicals react with cement hydration products inside fresh concrete, forming insoluble crystals within pores and capillaries. This crystalline structure permanently reduces water permeability and provides integral waterproofing throughout the life of the concrete.
By becoming part of the concrete matrix, Merks M17 MX Powder helps improve durability, resistance to water penetration, and long-term structural performance.
Key Features
- Integral crystalline waterproofing technology: Forms crystals inside concrete capillaries and pores
- Single-component powder admixture: Easy to dose and apply
- Permanent protection: Waterproofing performance remains active throughout the service life of the concrete
- Crack-sealing capability: Helps seal capillary cracks up to 0.4 mm
- Breathable structure: Water-resistant while allowing vapor diffusion
- Chemical resistance: Enhances concrete durability in aggressive environments
Applications
Merks M17 MX Powder is suitable for a wide range of reinforced concrete structures requiring integral waterproofing:
- Foundation slabs and foundation concrete
- Retaining and basement walls
- Water and wastewater treatment plants
- Tunnels and underground galleries
- Pile foundations
- Infrastructure and civil engineering projects
Advantages
- Becomes an integral part of the concrete structure
- Reduces water penetration under hydrostatic pressure
- Fills capillary voids through crystalline growth
- Provides long-term waterproofing performance
- Suitable for single-sided formwork retaining walls
- Reduces waterproofing labor and application time
- Improves overall concrete durability
Application Method
Preparation
Mix 16 kg of Merks M17 MX Powder with approximately 8 liters of clean water using a low-speed mixer until a homogeneous slurry is obtained.
Mixing with Concrete
Add the prepared slurry into the rotating concrete mixer and continue mixing at high speed for a minimum of 10 minutes to ensure uniform distribution throughout the concrete.
Concrete Placement
Place and compact the concrete using proper vibration techniques. Adequate curing should be performed for the first 3–4 days after casting.
Dosage
For optimum performance, Merks M17 MX Powder is typically used at approximately 1% of the cement content by weight.
Technical Properties
- Composition: Cement, mineral fillers, and polymer-modified additives
- Appearance: Gray, red, or yellow powder
- Powder Density: 1.20 kg/L
- Wet Density: 1.75 kg/L
- Water Vapor Permeability: Class I (Sd)
- Shelf Life: 12 months in unopened packaging under dry storage conditions
Storage and Packaging
Merks M17 MX Powder is supplied in sealed packaging. Store in a dry, frost-free environment away from direct moisture and sunlight. Shelf life is 12 months when stored in original unopened packaging.
Why Choose Merks M17 MX Powder?
Unlike surface-applied waterproofing products, Merks M17 MX Powder works from within the concrete itself. Its crystalline waterproofing mechanism permanently blocks water pathways while maintaining vapor permeability. This makes it an ideal solution for foundations, retaining walls, tunnels, water treatment facilities, and other structures exposed to continuous moisture and hydrostatic pressure.
Because the waterproofing protection becomes an integral part of the concrete, it cannot peel, puncture, or separate from the substrate over time.
Frequently Asked Questions (FAQ)
1. What is Merks M17 MX Powder used for?
It is used as an integral waterproofing admixture for concrete structures such as foundations, retaining walls, tunnels, and water treatment facilities.
2. How does the product work?
Active chemicals react with cement hydration products to form crystals inside concrete pores and capillaries, reducing water penetration.
3. How is it added to concrete?
The powder is first mixed with water to create a slurry and then added directly to the concrete mixer.
4. What is the recommended dosage?
The recommended dosage is approximately 1% of the cement content by weight, depending on project requirements.
5. Can it repair cracks?
The crystalline technology can help seal capillary cracks up to approximately 0.4 mm in width.