Product Facts
- Product Name
- Guncrete E - High Strength Dry-Spray Concrete Repair Mortar
- Price
- Available
- Availability
- In Stock
- Condition
- New
- Category
- Construction Materials > Concrete Repair Products
- Seller
- Fosroc Workspace
- MPN
- FC302060-20KG
Guncrete E - High Strength Dry-Spray Concrete Repair Mortar
Guncrete E is a high strength, low shrinkage, high build dry-spray applied concrete repair mortar supplied as a ready to use dry powder for use with standard dry spray gunite or shotcrete equipment. Ideal for large vertical or overhead repairs with advantages including high build formulation, high early strength, low drying shrinkage, low rebound, and chloride-free composition. Meets EN1504-3 Class R4 requirements with 28-day strength of 84MPa.
Guncrete E is a high strength, low shrinkage, high build dry-spray applied concrete repair mortar supplied as a ready to use dry powder for use with standard dry spray gunite or shotcrete equipment. Ideal for large vertical or overhead repairs with advantages including high build formulation, high early strength, low drying shrinkage, low rebound, and chloride-free composition. Meets EN1504-3 Class R4 requirements with 28-day strength of 84MPa.
Price: Available
Brand: Fosroc
Product Data (OpenAI Spec)
View Full JSON Spec ↗Specifications
| Condition | new |
|---|---|
| Category | Construction Materials > Concrete Repair Products |
Product Intelligence
Guncrete E: High Strength Dry-Spray Concrete Repair Mortar
Overview
Guncrete E is a high strength, low shrinkage, high build dry-spray applied repair mortar manufactured by Fosroc. It is supplied as a ready-to-use dry powder specifically formulated for use with standard dry spray gunite or shotcrete equipment. The material is designed for structural repairs to concrete and is made in Australia with no respirable crystalline silica (RCS) hazard.
Key Features and Advantages
Guncrete E delivers multiple performance benefits for concrete repair applications:
- High build formulation – Enables fewer applications of product, reducing overall project time
- High strength – Suitable for structural repairs with compressive strength exceeding 45 MPa
- High early strength – Provides rapid strength development, reducing back-to-service time
- Low drying shrinkage – Ensures long-term dimensional stability and prevents cracking
- Low rebound – Minimizes material waste during application
- Chloride free – Protects embedded steel reinforcement from corrosion
- RCS Hazard Free – Contains less than 0.1% respirable crystalline silica, classified as non-hazardous under Australian standards
- Suitable for Galvashield compatibility – Can be used with Galvashield incipient anode protection and cathodic protection systems
Technical Specifications
Compressive Strength
Guncrete E demonstrates excellent strength development measured according to EN 2190:1999 and AS 1478.2 - 2005:
| Time Period | Compressive Strength |
|---|---|
| 1 day | 35 MPa |
| 7 days | 60 MPa |
| 28 days | 84.0 MPa |
The EN 1504 R4 requirement specifies ≥ 45 MPa, which Guncrete E exceeds at all cure stages.
Additional Performance Properties
| Property | Test Method | Requirement | Result |
|---|---|---|---|
| Bond strength by pull-off | EN 1542:1999 | ≥ 2.0 MPa | 3.2 MPa (without primer, pre-soak) |
| Chloride ion content | EN 1015-17:2000 | ≤ 0.05% | 0.003% |
| Capillary absorption | EN 1307:2002 | ≤ 0.5 Kg/(m² x h⁰·⁵) | 0.1 Kg/(m² x h⁰·⁵) |
| Carbonation resistance | EN 13295:2005 | d ≤ ref concrete | Conform |
| Coefficient of thermal expansion | EN 1770:1990 | Declared value | 16.3 x 10⁻⁶ /°C |
| Flexural strength | AS 1012.11 - 2000 | – | 10.1 MPa @ 28 days |
| Tensile strength | AS 1012.10 - 2000 | – | 5.5 MPa @ 28 days |
| Elastic modulus | EN 13412:2008 | > 20 GPa | 52.8 GPa |
| Fresh wet density | – | – | 2160 Kg/m³ |
| Drying shrinkage | AS 1012.13 - 1992 | – | < 500 microstrains @ 7 days; < 600 microstrains @ 56 days |
Application Parameters
Design Criteria
Guncrete E is designed for vertical or horizontal applications with the following thickness specifications:
- Maximum thickness per layer: 150mm for vertical/horizontal applications
- Overhead applications: 80-100mm thick per layer (depending on substrate geometry)
- Minimum thickness: 10mm
- Multiple layers: Thicker sections can be achieved by applying multiple layers
Application Temperature Range
| Condition | Temperature |
|---|---|
| Minimum application (static or rising) | 5°C |
| Should not apply (falling temperature) | Below 5°C |
| Maximum ambient temperature | 35°C |
Primary Applications
Guncrete E is suitable for reinstatement of large concrete repair areas and localized patch repairs in:
- Sea walls – Subject to aggressive environmental conditions
- Bridge decks – Structural repair of deck surfaces
- Piers – Waterfront structural elements
- Tunnels – Underground concrete structures
- Sewer pipes – Pipe system repair and rehabilitation
Product Supply
Guncrete E is supplied in 20kg bags with product code FC302060-20KG and a shelf life of 36 months from the date of manufacture when kept in original, unopened bags.
Coverage and Yield
- Yield: Approximately 10.0 litres per 20kg bag
- Actual yield per bag: Depends on the consistency used during application
Water Ratio
- Water:powder ratio: 0.1 (used for obtaining test properties at 20°C)
Curing Requirements
As a cement-based repair mortar, Guncrete E must be cured immediately after finishing in accordance with good concrete practice. Recommended curing methods include:
- Concure A99 – Sprayed as a continuous film on finished surface
- Nitobond AR – Alternative curing membrane
- Additional protection – Polythene sheeting taped at edges in fast-drying conditions
- Cold weather protection – Protection from freezing in cold conditions
Large repair areas should be cured progressively (0.5m² at a time) without waiting for completion of the entire area.
Storage
Guncrete E requires proper storage to maintain product quality:
- Shelf life: 36 months from date of manufacture
- Storage conditions: Original, unopened bags in dry storage
- Do not use if: Lumps are present in the product or loss of workability occurs (requiring additional water)
References
- [1] Fosroc_Guncrete_E_TDS.pdf