Products > Mining Solutions > Thin Sprayed Liners (TSL)
MACT TSL-Flex (High Performance Polymer Modified TSL)
Target Audience: Mining Engineers, Geotechnical Engineers, Tunnel Managers, Project Managers requiring rapid, flexible, high-adhesion ground support.
Rapid-Setting, Flexible Thin Sprayed Liner for Demanding Ground Conditions - Achieve >1.5 MPa Bond Strength
Overview
MACT TSL-Flex is a premium, two-component, polymer-modified cementitious Thin Sprayed Liner (TSL) engineered for superior performance in challenging underground environments. Its specialized formulation delivers exceptional flexibility and adhesion (>1.5 MPa bond strength) coupled with rapid setting times (<15 minutes) and high early strength development (>10 MPa at 24hr). Designed for efficient spray application, TSL-Flex provides immediate surface stabilization, reduces re-entry times, and accommodates minor ground movement, making it ideal for accelerating development cycles and ensuring long-term strata control.
Key Technical Advantages
- Rapid Strength Gain: Achieves >10 MPa compressive strength within 24 hours, facilitating faster development and support installation cycles.
- Superior Adhesion: Develops tenacious bond strength (>1.5 MPa) to diverse geological substrates, including coal and weak rock, ensuring reliable, long-term surface stabilization.
- Enhanced Flexibility: Polymer modification provides ductility to accommodate minor strata convergence and stress changes without compromising liner integrity.
- Efficient Application: Optimized for standard wet-process spray equipment, pumpable over distance, with low rebound characteristics minimizing material waste and application time.
- Rapid Set: Sets in under 15 minutes, allowing for quicker re-entry and subsequent activities.
- Durable Protection: Creates a tough, abrasion-resistant surface seal, protecting strata from weathering and degradation.
- Safety Focused: Low VOC formulation, non-hazardous components simplify transport and handling.
Performance Data (Typical Values)
| Property | Standard | Value |
|---|---|---|
| Compressive Strength (1hr) | ASTM C109 (Mod.) | [Specify Value based on TDS] MPa |
| Compressive Strength (24hr) | ASTM C109 (Mod.) | > 10 MPa |
| Compressive Strength (7d) | ASTM C109 (Mod.) | [Specify Value based on TDS] MPa |
| Compressive Strength (28d) | ASTM C109 (Mod.) | > 25 MPa |
| Bond Strength (Pull-off, 28d) | ASTM C1583 / EN 1542 | > 1.5 MPa (Substrate dependent) |
| Flexural Strength (28d) | ASTM C78 / EN 196-1 | > 5 MPa |
| Set Time (Vicat Needle) | AS 2350.13 | < 15 minutes (@ 20°C) |
| Application Thickness | N/A | 3-5 mm per pass |
| Water Permeability | [Specify Standard, e.g., DIN 1048] | [Specify Value based on TDS] (Low) |
| Fire Resistance Rating (Material) | AS 1530.1 | Non-combustible |
| Density (Wet) | N/A | Approx. [Specify Value] kg/m³ |
| Yield (Powder + Liquid) | N/A | Approx. 12-13 L per 20kg powder + [Specify] L liquid |
Note: Performance data is indicative and subject to variation based on substrate conditions, ambient temperature, and application technique. Refer to the official MACT TSL-Flex Technical Data Sheet (TDS) for detailed specifications, testing conditions, and performance curves.
Application Parameters
| Parameter | Value |
|---|---|
| Mixing Ratio (Powder:Liquid) | [Specify Ratio, e.g., 20kg : 4.5L] by weight/volume |
| Pot Life | Approx. [Specify Value] minutes @ 20°C (See TDS for curve) |
| Substrate Temperature | 5°C - 35°C |
| Ambient Temperature | 5°C - 35°C |
| Recommended Equipment | Colloidal Mixer, Progressive Cavity Pump, Wet Spray Nozzle |
Primary Applications
- High-speed development headings requiring immediate surface support.
- Areas prone to minor convergence or ground movement.
- Longwall relocations and recovery roadways.
- Ventilation control: Rapid construction of airtight seals.
- Stabilization of friable rock/coal strata.
- Remediation of Alkali Silica Reaction (ASR) affected concrete.
- Slope stabilization and erosion control.
Compliance
Formulated to meet performance criteria relevant to TSLs in Australian mining environments. (Confirm specific AS or industry standards met).
Packaging & Logistics
Supplied as a 2-Pac system: Powder (e.g., 20kg bags) and Liquid Polymer (e.g., 20L pails, 200L drums, 1000L IBCs). Contact MACT for delivery options and lead times across Australia.
Next Steps
- Download the full Technical Data Sheet (TDS) (Placeholder Link)
- Request a Safety Data Sheet (SDS) (Placeholder Link)
- Contact a MACT technical representative