Drycrete is a pre-bagged dry shotcrete mix for use in underground support, rockface lining, or in structural repair situations.
Advantages
- Drycrete can be supplied with, or without steel fibre reinforcing or polypropylene reinforcing, allowing support characteristics to be met.
- Quick set characteristics are available for use where early strength gain is required.
- Mix design is optimised to reduce rebound losses.
- Drycrete achieves a minimum of 30 MPa strength at 28 days when correct water/cement ratios are used.
| Composition | Description |
| OPC | CEM 1 42,5 |
| RHC | CEM 1 52,5 |
| Optional extenders – GGBS / PFA | As required |
| Fine Aggregate | Crusher / River / Filler Sands ≤ 5% moisture content |
| Optional Admixtures | Plasticisers & accelerators |
Standards Compliance
Drycrete materials comply with the requirements of SABS ENV197-1, 1083, 1200G & 1491-1/2/3.
Range of Products
| Product | Bag size | Compressive Strength @ 28 days |
| Drycrete (standard) | 25kg/30kg | 30 MPa min. |
| Drycrete (Polyfibre) | 25kg/30kg | 30 MPa min. |
| Drycrete (steel fibre) | 25kg/30kg | 30 MPa min. |
| Drycrete Quickset (Polyfibre) | 25kg/30kg | 30 MPa min. |
| Drycrete Quickset (steel fibre) | 25kg/30kg | 30 MPa min. |
| Drycrete (RHC) | 25kg/30kg | 30 MPa min. |
Yield
| Bag Size | Yield per m³ |
| 25 kg | ± 93 bags |
| 30 kg | ± 77 bags |
Fibres
| Type | Size | Mass/m3 of Shotcrete | |
| Steel | Non-balling deformed steel fibre | 30-35mm | 25 – 50 kg |
| Polymer | Polypropylene – Strand or fibrillated | 25-45mm | 3,5 – 10 kg |
Performance
| Product | Slump | Compressive Strengths |
| Bunton Grout | ± 60 mm | 40 MPa min. @ 28 days |
Packaging
| Outer bag | Inner bag |
| Virgin, woven, pre-printed, polypropylene bag, with stitched polyester seams. Colour coded for easy identification of product. | Virgin, low density, polyethylene bag with heat-sealed sides and bottom seams. |
Storage
Materials should normally be stored under cover. Reduced shelf life may occur if packaging is exposed to the elements. Packaging materials may deteriorate, allowing moisture ingress into the cementitious binder. This could lead to premature hardening.
Shelf Life
Drycrete products will store for up to 6 months in dry conditions.
Safety
| General | The use of eye protection, gloves and dust masks is recommended. Follow the typical precautions as prescribed for handling Portland cement. |
| Inhalation | Constant exposure over long periods of time to very high concentrations may cause a cough with phlegm. |
| Skin contact | Prolonged exposure could sensitize skin causing mild irritation. In extreme cases, dermatitis could occur. |
| Eyes | Use eye protection. However, if eyes become affected, irrigate eyes with copious amounts of clean water. Seek medical attention. |
| Ingestion | Ingestion of harmful quantities is unlikely to occur. If ingested, drink copious amounts of drinking water and consult a medical practitioner. DO NOT INDUCE VOMITING. |
Technical Support, Servicing and Testing
Technicrete provides full support and back-up on both the technical and practical aspects of our products. We provide on-site assistance and underground training. All product performance is continuously monitored by means of regular testing at accredited laboratories.
Important Note
Technicrete products are guaranteed against defective materials and manufacture and are sold subject to its standard terms and conditions of sale. Whilst Technicrete endeavours to ensure that any advice, recommendation, specification or information it may give is accurate and correct, it cannot, because it has no direct or continuous control over where and how its products are applied, accept any liability either directly or indirectly arising from the use of its products, whether or not in accordance with any advice, specification, recommendation or information given by it.