Products > Wastewater Solutions > CAC Mortars
MACT CorroGuard-CAC (Calcium Aluminate Cement Concrete Repair Mortar)
Target Audience: Water/Wastewater Asset Managers, Civil Engineers, Specialist Concrete Repair Contractors dealing with aggressive chemical environments (e.g., H₂S).
High-Performance CAC Mortar for Ultimate Chemical Resistance & Rapid Repair in Wastewater Environments
Overview
MACT CorroGuard-CAC is a premium, pre-packaged repair mortar based on Calcium Aluminate Cement (CAC) technology, specifically engineered for the extreme chemical resistance required in wastewater infrastructure. It provides exceptional protection against biogenic sulfuric acid corrosion (H₂S attack) and other aggressive chemicals commonly found in sewers, manholes, and treatment plants. CorroGuard-CAC offers rapid strength development for quick return to service, high abrasion resistance, and excellent bond to concrete substrates, ensuring durable, long-lasting repairs.
Key Technical Advantages
- Superior Chemical Resistance: Specifically formulated with CAC for maximum resistance to sulfuric acid (H₂S) corrosion, sulfates, and other aggressive chemicals prevalent in wastewater systems.
- Rapid Strength Gain: Achieves high early strength (>15 MPa in 6hrs), allowing repaired areas to be returned to service quickly, minimizing downtime and bypass pumping needs.
- High Abrasion Resistance: Withstands high-flow conditions and abrasive materials often present in sewer systems.
- Excellent Bond Strength: Creates a monolithic bond (>2.0 MPa) with prepared concrete substrates.
- Low Permeability: Dense matrix minimizes ingress of corrosive agents, enhancing long-term durability.
- Sprayable or Trowelable: Versatile application methods suit various repair scenarios.
- Single Component: Pre-packaged mix ensures quality control and ease of use (just add water).
Performance Data (Typical Values)
| Property | Standard | Value |
|---|---|---|
| Compressive Strength (6 hours) | ASTM C109 / AS 1012.9 | > 15 MPa |
| Compressive Strength (24 hours) | ASTM C109 / AS 1012.9 | > 30 MPa |
| Compressive Strength (28 days) | ASTM C109 / AS 1012.9 | > 50 MPa |
| Flexural Strength (28 days) | ASTM C78 / AS 1012.11 | [Specify Value based on TDS] MPa |
| Bond Strength (Pull-off, 28d) | ASTM C1583 / EN 1542 | > 2.0 MPa (Substrate dependent) |
| Drying Shrinkage (28d) | AS 1012.13 | < [Specify Value, e.g., 600] microstrain |
| Chemical Resistance (pH) | ASTM C267 (Mod.) | Excellent resistance down to pH 3.5 (See TDS for specific chemical data) |
| Abrasion Resistance | ASTM C779 (Procedure A) | [Specify Value based on TDS] (High) |
| Water Absorption | ASTM C642 | < [Specify Value]% (Low Permeability) |
| Set Time (Vicat Needle) | AS 2350.13 | Approx. [Specify Value] hours @ 20°C |
| Water Demand | N/A | Approx. [Specify Value] L per 20kg bag |
| Yield (per 20kg bag) | N/A | Approx. [Specify Value] Litres |
| Density (Wet) | N/A | Approx. [Specify Value] kg/m³ |
Note: Performance data is indicative and subject to variation based on water content, ambient temperature, and application technique. Refer to the official MACT CorroGuard-CAC Technical Data Sheet (TDS) for detailed specifications, testing conditions, and performance curves.
Application Parameters
| Parameter | Value |
|---|---|
| Water Addition | Approx. [Specify Value] Litres per 20kg bag (Use minimum required for consistency) |
| Mixing Time | Approx. 3-5 minutes (Forced Action Mixer Recommended) |
| Workable Life (@ 20°C) | Approx. [Specify Value, e.g., 30-45] minutes |
| Application Method | Trowel or Low-Pressure Wet Spray |
| Application Thickness | Min [Value] mm, Max [Value] mm per layer (Consult TDS) |
| Substrate Preparation | Clean, Sound, Saturated Surface Dry (SSD) Concrete (ICRI CSP 3-5) |
| Substrate Temperature | 5°C - 30°C |
| Ambient Temperature | 5°C - 30°C |
| Curing | Continuous moist cure for min. 24 hours (See TDS) |
| Recommended Equipment | Forced Action Mixer, Trowels, Spray Pump (if applicable) |
Primary Applications
- Structural repair and protective lining of concrete sewers, manholes, pump stations, and inlet works.
- Reinstatement of corroded concrete surfaces exposed to H₂S and chemical attack.
- Repairs in industrial wastewater treatment facilities.
- Applications requiring rapid strength gain and high chemical resistance.
Compliance
Formulated using high-quality CAC and aggregates meeting relevant Australian Standards. Designed to meet performance expectations for concrete repair in aggressive wastewater environments.
Packaging & Logistics
Supplied as a powder in 20kg moisture-resistant bags. 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