ALVERTEX® FASTONE II is a cementitious quick-hardening additive developed for rapid hardening systems. Its key technical feature is an adjustable handling time of approximately 20 minutes to 2 hours using general setting modifiers such as tartaric or citric acid.
According to the PDS, the product provides 10–30 MPa after 6 hours, excellent crack resistance through expansion characteristics, and is suitable for quick-hardening grout, self-leveling materials, repair materials, decorative mortars and instant demolding of small products.
Early strength is achieved through void filling with ettringite formed from hydration of amorphous calcium aluminates before the main cement hydration reaction starts. This ensures rapid hardening and shrinkage compensation.
| Parameter | Value |
|---|---|
| Appearance | Greyish white powder |
| Specific weight | 2.92 |
| Blaine specific surface area | 6,000 cm²/g |
| Addition amount | 5–25% by weight of cement |
| Handling time | ~20 min – 2 h (adjustable with tartaric/citric acid) |
| Early strength | 10–30 MPa after 6 h |
ALVERTEX® FASTONE II is supplied in 25 kg bags and 1,000–1,200 kg jumbo bags. The exact packaging type should be confirmed upon order.
It is a cementitious quick-hardening additive developed for rapid-hardening systems. Its purpose is to provide fast setting and high early strength in cementitious mortars and concrete.
Handling time is adjusted with general setting modifiers such as tartaric acid or citric acid, in a range of approximately 20 minutes to 2 hours. The exact value is determined experimentally.
The basic dosage is 5–25% by weight of cement. The optimum level depends on the specific formulation, cement type and required characteristics.
According to the PDS, 10–30 MPa can be obtained after 6 hours. This is a reference value that may vary depending on the formulation.
Yes, due to its expansion characteristics, the product reduces autogenous and drying shrinkage, improving crack resistance.
The product is suitable for quick-hardening grout, self-leveling materials, repair compounds, decorative mortars and instant demolding of small products.
The mechanism is described based on cement hydration and ettringite formation, but universal compatibility is not guaranteed. Testing with your cement is recommended.
Because its published profile is very close to BEFORM: adjustable 20-minute-to-2-hour handling time, 10–30 MPa at 6 hours, high fineness and expansion-based crack/shrinkage control. We propose a controlled side-by-side test in your own formulation rather than asking you to accept a claim without evidence.