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Megastick® Shotcrete
For Wet Mix Applications
Click here to download Megastick wet mix data sheets
Features:
Description
Megastick® Shotcrete is a pre-blended shotcrete mixture containing aggregates, silica fume and
other carefully selected additives. Megastick Shotcrete has greatly enhanced shooting
characteristics and physical properties.
Uses
In the wet process, Megastick® Shotcrete is pumped through the hose and compressed air is
added at the nozzle. The shotcrete impacts the surface at a high velocity resulting in a wellcompacted,
high quality concrete with excellent bond. Some common uses include:
Slope stabilization.
Initial and secondary tunnel support.
Structural linings.
Concrete rehabilitation.
Megastick® Shotcrete may be used in combination with steel fibre reinforcement to enhance load
carrying capacity and with non-caustic accelerator to provide high early strengths and faster set
times. It can be blended to meet ACI 506 gradation #1 or #2.
Advantages
Stickiness.
Megastick® Shotcrete has vastly improved cohesion characteristics compared to conventional
shotcrete. This stickiness saves times and money:
- Rebound is significantly reduced, resulting in lower material usage.
- Sagging and sloughing are eliminated.
- Thick layers can be applied in a single pass in both the vertical and overhead orientations
without the use of caustic accelerators. This increases shooting efficiency as passing over
work two or three times to achieve a certain thickness is no longer necessary.
Packaging
Megastick® Shotcrete can be custom blended with or without steel fibre reinforcement. It is
normally packaged in bulk bags up to 1680 kg (one cubic yard), with double shrink-wrap on wooden
pallets.
Safety Precautions
Megastick Shotcrete contains Portland cement, silica fume and other carefully selected additives.
Normal safety wear such as rubber gloves, dust mask and safety glasses used to handle
conventional cement based products should be worn. Material Safety Data Sheets are available on
request.
MEGASTICK® SHOTCRETE
Technical Data
| Compressive Strengths |
CAN3-A23-14C
ASTM C42 |
|
| 7-day |
|
|
| 28-day |
|
|
| Flexural Strengths |
ASTM 1018 |
|
| Boiled Absorption |
ASTM C842 |
|
| Volume of Permeable Voids |
ASTM C842 |
|
| Toughness |
ASTM C1018 |
|
| 60-kg/cu m (100 lb/cu yd): |
|
|
| Fibre |
|
|
| Set Times |
ASTM C555 |
|
| (3% Accelerator) |
|
|
| Freeze Thaw Resistance |
ASTM C555 |
|
| |
80% |
|
| Rebound |
Consultant’s Test |
| Vertical 12% |
Overhead 20% |
|
| Aggregate Gradation |
ACI 506 R-85 Table 2.1 |
| |
Gradation #1 |
Gradation #2 |
| 12 mm ½ |
100 |
100 |
| 10 mm 3/8 |
100 |
90-100 |
| 4.7 mm #4 |
95-100 |
70-85 |
| 2.4 mm #8 |
80-100 |
50-70 |
| 1.2 mm #15 |
50-85 |
35-85 |
| 600 um #30 |
25-60 |
20-35 |
| 300 um #50 |
10-30 |
8-20 |
| 150 um #100 |
2-10 |
2-10 |
|
|
|
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