BMS-301 Crystalline Waterproofing Agent (Internal Mix)

BMS-301 Crystalline Waterproofing Agent (Internal Mix)

1. Product Introduction

What is BMS-301 Crystalline Waterproofing Agent?

BMS-301 is an internal-mix crystalline waterproofing agent formulated using selected Portland cement and multiple active chemical agents based on a proprietary recipe. It comes in powder form, is non-toxic and eco-friendly, and is added during the concrete mixing process. Once inside the concrete, it permanently self-heals micro-cracks, pores, and capillary tracts to reduce permeability. Even under high hydrostatic pressure, it effectively protects concrete against water ingress and environmental degradation—including chemical exposure and freeze-thaw cycles—significantly enhancing structural durability over a 60+ year service life.

How Does It Work?

Self-Healing and Waterproofing: During cement hydration, C-S-H gel and Ca(OH)₂ are generated. Unhydrated cement particles and latently reactive materials remain embedded within the matrix. When water penetrates, the active components in BMS-301 react with these materials to accelerate the formation of crystalline precipitates, which densify micro-cracks and defects through cementation, achieving both self-healing and waterproofing.

Active Component Reactivation: The active substances in BMS-301 chemically complex with free Ca²⁺ in the cement matrix, forming water-soluble, unstable calcium complexes. These complexes migrate through structural pores with water. Upon encountering unhydrated cement particles and other reactive materials, the active components are displaced, forming more stable crystals that fill cracks. The active substances then regenerate as free radicals and continue migrating through the concrete.

Continuous Cyclic Process: This process repeats continuously. Crystal formations accumulate in structural defects, gradually creating a densely cemented impermeable zone that significantly enhances the structure's waterproofing capability. When the structure is dry, the active components remain dormant due to the absence of a diffusion medium. Once water infiltrates, they are reactivated to generate new crystals.

Why Choose BMS-301 from Shengchuan?

20 Years of Focused R&D: Built on Zhongsen Holding Group's deep expertise in waterproofing and construction materials.

43+ National Patents: Protected by extensive intellectual property in green cement additives and waterproofing technologies.

Top University Partnerships: Ongoing industry-academia cooperation with Tsinghua University, University of Science and Technology Beijing, and University of Jinan, along with an academician workstation in Shandong Province.

National Standards Contributor: Participation in national key R&D projects and contribution to 6 national industry standards.

Proven Performance: Independently tested against international brands, with superior results in impermeability and self-healing capabilities.

2. Technical Indicators

Parameter	Specification	Remarks
Appearance	Off-white uniform fine powder, no lumps	—
Fineness (0.63mm residue)	≤ 0.1%	—
Moisture Content	≤ 1.0%	—
Chloride Ion Content	≤ 0.1%	Safe for reinforced concrete
Recommended Dosage	800g – 2000g/ton of cementitious material	C30 concrete: 3-4 kg/m³

3. Key Benefits

Performance Area	Expected Improvement
Self-Healing	Self-heals 0.4-1.0mm cracks; significantly reduces seepage in 1.0-2.0mm cracks
Compressive Strength	5% – 15% increase
Service Life	Extends concrete durability to 60+ years
Waterproofing	Permanent structural waterproofing; eliminates need for external membranes
Freeze-Thaw Resistance	Enhanced durability in cyclic freeze-thaw conditions
Chloride Resistance	Reduced chloride ion penetration; protects reinforcement
Carbonation Resistance	Improved resistance to carbonation-induced deterioration
Alkali-Aggregate Reaction	Effectively inhibits AAR

4. Performance Data

Comparison with International Brands

Test Item	Technical Requirement	BMS-301	Canadian Brand	US Brand
7d Compressive Strength Ratio (%)	≥ 100	106	101	118
28d Compressive Strength Ratio (%)	≥ 100	115	104	111
28d Shrinkage Ratio (%)	≤ 125	104	104	103
28d Impermeability Pressure (MPa)	—	1.0	0.9	0.9
28d Impermeability Pressure Ratio (%)	≥ 200	250	225	225
56d Second Impermeability Pressure (MPa)	—	1.1	1.0	1.0
56d Second Impermeability Pressure Ratio (%)	≥ 150	220	200	200

5. Frequently Asked Questions

Q: How is the optimal dosage determined?

A: The recommended dosage is 0.8%-2.0% of cementitious material. For standard C30 concrete, the optimal dosage is 3-4 kg/m³. The specific dosage should be based on structural importance, thickness, environmental exposure, and construction conditions. Our technical team can assist with trial mixes.

Q: Will BMS-301 lose its self-healing capability in a dry environment?

A: No. The active components remain dormant in dry conditions. The crystallization-based repair process reactivates upon subsequent contact with moisture, enabling repeated self-healing through wet-dry cycles.

Q: Can BMS-301 be used for drinking water tanks?

A: Yes. It is made from non-toxic, harmless inorganic mineral raw materials and does not leach harmful ions, meeting the standards for materials used in drinking water projects.

Q: How does BMS-301 differ from standard crystalline waterproofing powders on the market?

A: Standard crystalline powders provide only surface-level waterproofing and lack long-term self-healing components. BMS-301 is mixed directly into the concrete and contains latent, dormant minerals that activate to repeatedly repair micro-cracks (0.05-0.4 mm) during wet-dry cycles. It also reduces chloride ion penetration and enhances corrosion resistance and durability, making it suitable for high-durability projects such as underground structures, marine engineering, and nuclear power facilities.

6. Application Scope

Application	Benefit
Underground Structural Engineering	Integral structural waterproofing with dense pore structure and crack self-healing
Water-Retaining Hydraulic Structures	Non-toxic, dual resistance to seepage and corrosion
Coastal Marine Engineering	Low chloride, inhibits chloride ion penetration; continuous self-healing in wet-dry cycling

7. Usage Guidelines

Dosage: 0.8%-2.0% of cementitious material. For C30 concrete, 3-4 kg/m³. Adjust based on structural requirements and environmental conditions.

At Ready-Mix Plants: Add during batching; mix and load with concrete; pour and cure normally—no additional construction time required.

On-Site Application: Upon concrete truck arrival, mix product with water at 1:1 ratio until uniform, pour into the truck, rotate drum rapidly for 5-10 minutes, then pour with concrete.

Note: We provide technical support for dosage optimization and application guidance.

8. Related Products

BMS-302 Crystalline Waterproofing Agent (External Application) – For surface-applied waterproofing.

ZS-High-Efficiency Enhanced Grinding Aid – For maximum clinker replacement.

ZS-Cement Strength Enhancer – For further strength improvement.

ZS-Hexavalent Chromium Reducer – For environmental compliance.

9. Call to Action

Our engineering team is available for virtual or on-site technical support. Contact us today for a free waterproofing solution analysis tailored to your project.

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