Concrete admixture

JF-2 High-Efficiency Water Reducer

Name: JF-2 High Efficiency Water Reducer
Brand: Luka Chemicals
SKU: JF2-WR-001
Availability: InStock

Advanced Concrete Admixture for Improved Performance

Category Concrete admixture

Premium Chemical Admixtures for Concrete Performance Enhancement

JF-2 Chemical Admixtures is a chemically synthesized, non-air-entraining, naphthalene-based high-efficiency water reducer developed for modern concrete applications. As part of our professional construction chemical supplies, this advanced chemical admixtures for concrete solution is designed to improve concrete workability, reduce water consumption, and enhance both early and long-term compressive strength. Widely used in commercial and infrastructure projects, JF-2 is ideal for producing high-fluidity concrete with a slump greater than 20cm, early-strength cast-in-place concrete, prestressed concrete, and precast concrete components. Its superior dispersion capability helps contractors and ready-mix producers achieve stronger, more durable concrete while reducing cement consumption and improving construction efficiency. As experienced concrete admixture manufacturers serving global construction markets, we provide stable and high-performance admixture solutions suitable for a wide range of cement systems and job site conditions.

Why Choose JF-2 Concrete Admixture Chemical?

JF-2 is engineered to meet the growing demands of the global construction industry and the expanding China concrete admixtures market. This high-performance concrete admixture chemical delivers excellent water reduction, slump retention, durability, and strength enhancement for demanding construction environments. Compatible with five common cement types, JF-2 Chemical Admixtures performs exceptionally well in:

High-rise building projects
Highways and bridges
Dams and water-retaining structures
Tunnels and underground engineering
Industrial flooring systems
Precast concrete manufacturing
Prestressed concrete applications
Commercial infrastructure projects

Its versatility makes it a preferred solution for contractors, distributors, wholesalers, and concrete producers looking for reliable chemical admixtures concrete technologies.

Characteristics & Advantages

Excellent Water Reduction Performance

JF-2 achieves a water reduction rate of 15% to 30%, significantly improving concrete density and reducing water-cement ratio while maintaining superior workability.

Improved Concrete Strength

This advanced chemical admixtures for concrete formulation enhances both early-age and long-term compressive strength, helping improve structural integrity and load-bearing performance.

Enhanced Durability

JF-2 Chemical Admixtures improve freeze-thaw resistance, impermeability, crack resistance, and overall concrete durability in aggressive environments.

Cement Saving Efficiency

By improving dispersion and hydration efficiency, the product helps reduce cement usage by 15% to 20% without sacrificing concrete performance.

Superior Slump Retention

At a dosage of 0.75%, JF-2 Chemical Admixtures can increase slump by more than 10 cm, making it suitable for pumping concrete and high-fluidity applications.

Wide Application Compatibility

Suitable for:

High-strength concrete
Early-strength concrete
Flowable concrete
Steam-cured precast concrete
Prestressed concrete
Ready-mix concrete
Mass concrete projects

Application Information

Recommended Dosage

Powder

0.5% to 1.5% of the total cementitious material weight.

Liquid

1.5% to 3.0% of the cementitious material weight.

Solid content: 38% ±2%
Specific gravity: ≥1.20

For liquid applications, the dosage should be adjusted according to solid content, and water contained in the liquid should be included in total mix water calculations.

Recommended Mixing Method

The delayed addition method is recommended to ensure uniform dispersion and optimal concrete performance.

Temperature Requirements

To maintain product stability and avoid crystallization, ensure liquid storage temperature remains above 15°C during transportation and application.

Homogeneity Indicators

Item	Index
Appearance (Powder)	Yellow-brown powder
Appearance (Liquid)	Brown liquid
pH Value	7~9
Fineness	0.315mm sieve residue <15%
Net Slump	≥220mm
Sulfate Content	<18%
Chloride Ion Content	Not detected

Technical Performance Comparison

(Dosage: Binder × 0.75% Powder)

Test Item	Standard Type	Retarding Type	Test Result
Water Reduction Rate (%)	14	14	18
Bleeding Rate (%)	90	100	0
Air Content (%)	3	4.5	2.3
Setting Time Difference (min)	Initial: -90~+120	Final: >+90	Initial: -63 / Final: -21
Compressive Strength Ratio 1d (%)	140	–	180
Compressive Strength Ratio 3d (%)	130	–	178
Compressive Strength Ratio 7d (%)	125	125	161
Compressive Strength Ratio 28d (%)	120	120	126
Shrinkage Ratio 28d (%)	135	135	117

Compliance Standard

All tested items meet the requirements of the GB8076-2008 High-Efficiency Water Reducer Standard. This demonstrates the product’s reliability, quality consistency, and suitability for demanding construction projects.

Recommended Dosage for Different Strength Grades & Slumps

Strength Grade	Slump Requirement (cm)	Dosage (Binder × %)
C40	8~10	0.5
C50	8~10	0.75
C60	8~10	1
C40	20~22	1
C50	20~22	1.2
C60	20~22	1.5

Packaging, Storage & Transportation

Packaging

Powder: 25kg double-layer plastic woven bags
Liquid: Bulk tanker delivery or customized packaging options

Storage

Store in a cool, dry, and well-ventilated area. Protect from direct sunlight, moisture, and rain exposure.

Shelf Life

The product remains valid for two years under proper storage conditions. Expired products may still be used after passing performance inspection and trial testing.

Trusted Concrete Admixture Factory for Global Buyers

As a professional concrete admixture factory, we focus on delivering stable quality, technical support, and reliable supply capacity for international construction projects. Our construction chemical solutions are trusted by:

Ready-mix concrete plants
Infrastructure contractors
Building material distributors
Construction chemical importers
OEM and private label buyers
Precast concrete manufacturers

We continuously invest in research, production technology, and quality control to support the growing global demand for high-performance construction chemical supplies.

Legal Notes

The information provided is based on current technical knowledge and practical application experience under normal storage, handling, and usage conditions. Because job site conditions, raw materials, and construction methods may vary, users should conduct appropriate testing before large-scale application.

FAQs

What are chemical admixtures for concrete used for?

Chemical admixtures for concrete are used to improve workability, reduce water content, enhance strength, accelerate or delay setting time, and improve durability in different construction environments.

What is the recommended dosage for JF-2 water reducer?

The recommended dosage ranges from 0.5% to 1.5% for powder applications and 1.5% to 3.0% for liquid applications, depending on project requirements and cement type.

Is JF-2 suitable for precast concrete?

Yes, JF-2 Chemical Admixtures is widely used in precast concrete, prestressed concrete, and steam-curing applications because of its excellent early-strength performance.

Can JF-2 reduce cement consumption?

Yes, the product can help save 15% to 20% of cement while maintaining concrete strength and workability.

What industries use concrete admixture chemicals?

Concrete admixture chemicals are widely used in infrastructure, commercial buildings, bridges, tunnels, dams, highways, industrial flooring, and precast manufacturing.

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Flexible Payment & 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.