Concrete admixture

VF 36 Crystalline Waterproofing Admixture for Concrete

Crack self-healing function; repairs micro-cracks below 0.3 mm; significantly improves impermeability pressure resistance.

Appearance: White Crystalline Powder

Category Concrete admixture

VF 36 is an integral crystalline waterproofing admixture engineered for concrete structures that face constant water exposure. It is added directly into the concrete mix and works permanently within the matrix, unlike surface coatings that wear off over time. The admixture reacts with moisture and unhydrated cement particles to form insoluble needle-shaped crystals inside capillary pores and microcracks. These crystals block water pathways and give the concrete long-term impermeability under hydrostatic pressure. As a crystalline concrete waterproofing admixture, VF 36 falls under the permeability reducing admixture category used for structures exposed to sustained water pressure, often referred to in industry standards as PRAH systems. This makes it suitable for below-grade structures, water-retaining tanks, and any application where water resistance cannot depend on external membranes alone.

How Does a Crystalline Waterproofing Admixture Work

Once VF 36 is added during mixing, its active compounds remain dormant inside the hardened concrete. When water later enters through a crack or pore, the compounds react with residual unhydrated cement and moisture. This reaction produces crystalline growth that expands to fill the void and seal the pathway. Because the reaction only activates in the presence of water, the admixture keeps working for the full service life of the structure, repairing new microcracks as they form. This self-healing mechanism is what separates crystalline admixture waterproofing from one-time surface treatments.

Applications in Infrastructure

VF 36 crystalline waterproofing admixture for concrete is used across projects where water intrusion and hydrostatic pressure are ongoing risks. Tunnels and subway systems, Hydropower stations, Reservoirs and water storage structures, Dams and irrigation channels, Bridges and transport infrastructure, Underground basements and foundations, Marine and coastal engineering structures It performs well in environments with aggressive water pressure, chloride exposure, and sulfate attack, making it a preferred integral crystalline waterproofing admixture for civil and marine engineering teams.

Key Benefits of VF 36 Crystalline Waterproofing Admixture

Self-healing crack repair: Closes microcracks up to 0.3 mm through internal crystalline growth, without manual intervention. Superior waterproofing performance: Increases impermeability pressure resistance and stops water seepage even under sustained hydrostatic load. Enhanced durability: Reduces the ingress of chloride ions and sulfates, protecting reinforcing steel and extending structure lifespan. Structural strength retention: Maintains compressive strength while improving long-term structural integrity, unlike some surface-applied systems that only address the exterior. Lower total project cost: Removes the need for separate external waterproofing membranes, reducing material and labor costs over the project lifecycle. Simple mixing process: Added directly during batching with no special equipment or extra site work required.

Technical Data

Item	Performance Index
Water Reduction Rate	< 8%
Initial Setting Time Difference	≥ 90 min
Compressive Strength (7d)	≥ 100%
Compressive Strength (28d)	≥ 100%
Shrinkage Ratio (28d)	≤ 125%
28d Impermeability Pressure Ratio	≥ 200%
56d Impermeability Pressure Ratio	≥ 150%

Recommended Dosage

Standard dosage range is 2.0% to 4.0% of cementitious material weight, with 3.0% as the recommended starting point for most mix designs.

Mixing Requirements

Extend mixing time to ensure uniform dispersion throughout the batch. Maintain proper vibration during pouring to avoid air pockets around the admixture particles. Follow strict mix design control, since water-to-binder ratio affects how well the crystalline reaction develops.

What Is the Price of a Crystalline Waterproofing Admixture Like VF 36

Crystalline waterproofing admixture prices vary based on order volume, packaging format, and shipping terms. As a direct manufacturer, Luke Chemicals offers competitive factory pricing with flexible trade terms including FOB, CFR, and CIF. Bulk buyers such as ready mix producers, precast manufacturers, and distributors typically receive tiered pricing based on tonnage. Contact our technical sales team for a current quote based on your project volume and destination port.

Packaging and Storage

Packaging options include valve bags, bulk tanker supply, and custom packaging on request. Store in dry, moisture-proof conditions. Protect from frost and humidity during storage and transport. Shelf life is 6 months under proper storage conditions. Product can still be used after testing if no caking has occurred.

Safety Information

VF 36 is non-flammable, non-explosive, and formulated without formaldehyde. Standard handling precautions apply. Avoid skin and eye contact during handling. Use gloves and a mask when dosing the powder. Do not ingest the product.

Why Choose Luke Chemicals

Luke Chemicals, operated by Sichuan Lujia Sitong Technology Development Co., Ltd., manufactures concrete admixtures for global infrastructure projects. We support contractors, distributors, and ready mix producers with technical guidance, consistent product quality, and reliable bulk supply. Our team can provide dosage recommendations tailored to your local cement type and site conditions.

Request Pricing and a Free Sample

Get a technical data sheet, current pricing, and a free sample of VF 36 crystalline waterproofing admixture. Contact our team today to discuss your project requirements and receive a quote suited to your order volume.

Related Products

VF160 Polycarboxylate Water Reducing Flake

VF200 – Polycarboxylate Slump-Retaining Flake Concrete Admixture

VF570 – Polycarboxylate Superplasticizer Powder

Flexible Payment and Global Delivery Solutions

Backed by large-scale production capacity and strong technical strength, Sichuan Lujia Sitong Technology Development Co., Ltd. ensures stable supply and efficient delivery to customers worldwide.

We support multiple international trade terms and flexible payment methods to meet diverse procurement needs.

Payment Options:

T/T, L/C, OA, and other negotiated methods

Shipping Coverage:

Worldwide

Transportation Terms:

Sea freight by CIF, FOB, CFR, and other Incoterms

Lead Time:

7–14 days depending on order volume and specifications

Packaging:

• 25kg moisture-proof bags • 500kg / 600kg palletized packaging • Customized packaging available

Minimum Order Quantity (MOQ):

500kg

Request Your Free Product Sample

To help you better evaluate our product quality and performance, we are pleased to offer free samples of our construction chemical solutions. Experience real results before placing bulk orders — with worldwide delivery available.

What You Will Receive:

✔ Product Technical Data Sheet (TDS) & brochure
✔ 200–600g sample (depending on product type)
✔ Fast global shipping via DHL or FedEx
✔ Technical consultation & formulation support
✔ Zero sample cost (shipping may vary by region)

Why Try Our Samples?

• Verify performance in real applications
• Test compatibility with your materials
• Reduce procurement risk
• Get expert technical guidance

Frequently Asked Questions

1. What are concrete admixtures used for?

Concrete admixtures are added to concrete mixes to improve performance such as strength, workability, waterproofing, durability, setting time, and crack resistance. They help achieve better construction quality and efficiency under different project conditions.

2. Can your admixtures be used with standard concrete materials?

Yes. Our products are compatible with most types of cement, aggregates, and conventional concrete mix designs. Technical support is available to ensure optimal performance for your specific application.

3. Do you provide technical data sheets (TDS)?

Yes. Each product is supplied with a detailed Technical Data Sheet including dosage, application guidelines, storage conditions, and safety information.

4. Can I request samples before placing a bulk order?

Absolutely. We offer free product samples for testing and evaluation. Samples are typically 200–600g depending on the product type.

5. What is the typical dosage of your admixtures?

Dosage varies depending on the product and application, usually ranging from 0.5% to 2% by cement weight. Exact recommendations are provided in the product TDS.

6. Do you offer customized formulations?

Yes. Our technical team can adjust formulations based on your project requirements, climate conditions, and performance goals.

7. What packaging options are available?

Standard packaging is 25kg bags, with palletized options (500kg–600kg) and customized packaging available upon request.

8. How long is the shelf life?

Most products have a shelf life of 12 months when stored in a dry, cool, and sealed environment.