XT30 High Early Strength Cement is a rapid-setting CSA-based binder that develops >20 MPa compressive strength in 3 hours, ideal for fast-track concrete repairs and precast production.
Fast Setting Time – Initial set in 15 minutes, final set within 30 minutes
Early Strength Gain – ≥20 MPa in 3h, ≥50 MPa in 1d, ≥90 MPa in 28d
Crack-Resistant Micro-Expansion – Minimizes shrinkage and improves durability
Eco-Friendly & Low Carbon – Reduces OPC use by 20–50%, chloride-free and low-alkali
Product Introduction
XT30 is a high-performance, eco-friendly early-strength cement additive developed by SINO-SINA. Produced using C-A-Š mineral fusion technology, it blends bauxite, by-product gypsum, limestone, and high-alumina solid waste into a low-carbon, highly reactive binder.
XT30 is designed as a partial replacement for Portland cement and a viable alternative to CSA cement (Calcium Sulfoaluminate Cement). It accelerates early hydration, delivers rapid strength gain, and suppresses early cracking—all while maintaining long-term strength stability without the risk of strength regression common in CSA-based systems.
While both XT30 and CSA cement offer fast-setting and early-strength characteristics, XT30 stands out as a greener and more compatible solution for regular concrete and mortar systems. Here's how they compare:
| Feature | XT30 Early Strength Additive | CSA Cement (Calcium Sulfoaluminate Cement) |
|---|---|---|
| Material Type | Additive / Partial cement replacement | Full cement replacement (special binder) |
| Application Method | Replace 20–50% of OPC | Used as main binder (may replace 100% OPC) |
| Early Strength | ≥30 MPa @ 3h (with OPC) | ≥30 MPa @ 3h (pure) |
| Strength Stability | No regression; long-term strength improves | May experience later strength drop without optimization |
| Shrinkage/Cracking | Micro-expansive; good crack control | Moderate shrinkage; depends on formulation |
| Chloride / Alkali Content | Chloride-free, low alkali (safe for rebar) | May contain higher sulfate or alkali levels |
| Environmental Profile | Low carbon, waste-utilizing binder | Higher calcination energy & emissions |
| Ease of Use | Compatible with OPC-based mixes; no major design change | May require new mix designs and setting control |
Product Parameters
| Property | Requirement | Typical Result |
|---|---|---|
| Specific Surface Area (m²/kg) | ≥ 480 | 500 |
| Initial Set Time (min) | ≤ 20 | 15 (adjustable) |
| Final Set Time (min) | ≤ 40 | 23 (adjustable) |
| Flexural Strength - 3h (MPa) | ≥ 4.0 | 4.5 |
| Compressive Strength - 3h (MPa) | ≥ 20.0 | 25.0 |
| Compressive Strength - 1d (MPa) | ≥ 50.0 | 56.0 |
| Compressive Strength - 28d (MPa) | ≥ 60.0 | 92.0 |
Product Usage
| Mix Type | Fluidity (mm) | Initial Set (min) | Final Set (min) |
|---|---|---|---|
| Ordinary Portland Cement (P.O) | 175 | 126 | 206 |
| P.O + 30% XT30 | 170 | 35 | 50 |
| P.O + 30% Calcium Sulfoaluminate Cement (CSA) | 165 | 55 | 65 |
| XT30 (pure) | 170 | 14 | 20 |
| CSA (pure) | 165 | 16 | 22 |
| Mix Type | 10h Flexural | 10h Compressive | 28d Compressive |
|---|---|---|---|
| P.O | - | - | 46.0 |
| P.O + 30% XT30 | 3.4 | 15.2 | 60.8 |
| XT30 (pure) | 4.5 | 22.0 | 90.0 |
| CSA (pure) | 7.0 | 40.0 | 45.0 |
Recommended replacement ratio: 20–50% of OPC with XT30.
Use potable water; water-to-binder ratio between 0.40–0.48 depending on mix design.
Mix thoroughly using a forced-action mixer; dry mix 10 seconds, then wet mix 3 minutes.
For cold weather, warm mixing water up to 65°C is recommended.
Pour within 30 minutes of mixing; do not use material if workability drops below specification.
Packaged in 25 kg moisture-proof composite bags.
Shelf life: 3 months when stored in cool, dry, ventilated areas.
Keep bags sealed and protected from moisture and frost.
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Our products have undergone rigorous testing at our national testing laboratory (CABR testing center co., ltd). Renowned Fortune Global 500 firms such as China Railway Group Limited, China Communications Construction Company Limited, and Sinohydro are among our esteemed clients.
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