Factory Supply Concrete Accelerator for High-Performance Sprayed Concrete and Mortar Accelerator

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Product Description

Basic Information
Model NO.
concrete accelerator
Grade
LR
Usage
Concrete Accelerator
State
Powdered Solid
Color
Gray Brown or off-White
pH Value
3.0±0.5
Alkali Content
<1%
Solid Content
40-50%
Initial Setting Time
5min
Final Setting Time
12min
Compressive Strength
7.0MPa (1d)
HS Code
3824409000
Product Description

Alkali-free solid setting agent is a high-performance, environmentally friendly solution that is both alkali-free and chlorine-free. It is specifically engineered to accelerate cement solidification while significantly enhancing both early and late-stage cement strength and anti-seepage capabilities.

Key Composition: This product belongs to the aluminum sulfate system. It is non-toxic, harmless, non-radioactive, non-corrosive, non-flammable, and non-explosive.
Concrete Accelerator
Concrete Accelerator Detail

Safety Tips: Avoid contact with skin and eyes. In case of contact, rinse immediately with clean water. Wear masks and goggles when handling powdered products.

Storage: Keep packaging intact to prevent moisture. Liquid storage should be above 5ºC in plastic or glass fiber reinforced barrels. Avoid iron containers as the product is weakly acidic.

Product Parameters & Specifications
  • Easy to prepare: Simply mix with water at room temperature.
  • Quick dissolution: Complete dissolution within 1 hour at room temperature.
  • Highly economical: Reduces packaging and transportation costs.
  • Excellent early strength: Meets strict construction requirements for 1-day and 28-day strength.
  • Antifreeze effect: Ready-to-use powder avoids common liquid antifreeze issues.
Specification ItemValue / Description
StatePowdered solid
ColorGray brown or off-white
PH value3.0±0.5
Alkali content<1%
Chloride ion content<0.05%
Solid content40-50%
Initial setting time≤5min
Final setting time≤12min
1d compressive strength≥7.0Mpa
25d compressive strength ratio≥85%
Usage Method & Application

The recommended dosage is 6-9% of the cement dosage. The precise amount depends on cement type, temperature, and specific construction requirements.

Recipe TypeInstant PowderWater
General Formula50%50%
Adapted Recipe45% ~ 60%55% ~ 40%

Scope of Application:

  • High-performance sprayed concrete and mortar.
  • Tunnel linings for railways, highways, and hydraulic projects.
  • Reinforcement of thin-walled concrete and foundation pit protection.
  • Coal mine shafts, industrial engineering, and civil air defense.
  • Projects requiring high water permeability resistance.
Plant Equipment & Packaging
Plant Equipment

Packing Options:

  • Jumbo bags: 500kg / 600kg
  • PP bags: 20kg / 25kg
  • Kraft paper bags: 25kg

Shipping Capacity: 20GP/40GP/40HQ FCL can accommodate approximately 25 tons (without pallets). Delivery typically within 7-15 days.

Frequently Asked Questions
What are the primary benefits of using an alkali-free setting agent?
It provides rapid solidification of cement, significantly improves early and late-stage strength, and enhances the anti-seepage properties of the concrete. Being alkali-free, it is also more environmentally friendly and safer for the structure.
How should I store the powdered setting agent?
The powder should be kept in sealed bags to prevent moisture absorption. In a sealed state, it has a shelf life of 2 years. Once mixed into a liquid, it should be used within 3 months and stored above 5ºC.
What is the recommended dosage for construction?
The typical dosage is between 6% and 9% of the total cement weight. However, actual dosage should be determined through on-site experiments based on the cement grade and environmental temperature.
Can this product be used with any type of cement?
It works best with newly produced silicate cement or ordinary silicate cement. Damp or long-stored cement may negatively impact the setting time and performance.
Are there any special precautions during mixing?
Yes. Ensure the accelerator pump is thoroughly cleaned before use. Do not mix this product with other accelerators, as chemical reactions could occur, leading to equipment blockage.
What should I do if the product contacts my skin?
If skin contact occurs, rinse immediately with plenty of clean water. If the product splashes into your eyes, seek medical attention after rinsing. Operators should always wear masks and goggles.

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