🧱 Eco-Friendly CSA Cement Alternative for Fast-Setting Concrete & Mortar
XT30 is an eco-friendly CSA alternative binder produced from high-reactivity alumino-calcium minerals. Designed for early strength gain and long-term stability in fast-track concrete applications.
Rapid Early Strength Gain
Long-Term Strength Stability Without Regression
Green & Low-Carbon Composition
Excellent Crack Resistance with Minimal Shrinkage
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 |
🔍 Keywords integrated: CSA cement alternative, early strength additive, low-carbon binder, rapid-hardening cement replacement
✅ More Compatible: Easily integrates into OPC-based mixes, no re-design needed
✅ More Stable: Avoids the post-peak strength regression sometimes seen in CSA cement
✅ More Sustainable: Lower carbon footprint, utilizes industrial by-products
✅ More Cost-Efficient: Acts as a high-performance cement substitute, not a specialty cement
2h Compressive Strength: ≥20 MPa
3h Compressive Strength: ≥30 MPa
1d Strength: Up to 56 MPa
28d Strength: Up to 92 MPa
Excellent crack resistance with low shrinkage
Initial setting as fast as 14–20 minutes (adjustable)
Tested per GB/T 20472 – Sulfoaluminate Cement standard
| Mix Design | Flow (mm) | Initial Set (min) | 1d Comp. Strength (MPa) | 28d Comp. Strength (MPa) |
|---|---|---|---|---|
| OPC Only | 175 | 126 | 18.1 | 46.0 |
| OPC + 30% XT30 | 170 | 35 | 35.0 | 60.8 |
| OPC + 30% CSA Cement | 165 | 55 | 21.3 | 50.0 |
| XT30 Only | 170 | 14 | 56.0 | 90.0 |
| CSA Cement Only | 165 | 16 | 28.0 | 45.0 |
Rapid repair mortars and overlays
Winter concreting / cold weather construction
Precast concrete elements
Thin-section repairs
Projects requiring early demolding or traffic opening
25kg moisture-resistant bags
Shelf life: 3 months
Store in cool, dry, and ventilated areas. Reseal after opening and avoid contact with moisture.
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 |
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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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