Ultra-Stick Shotcrete
Dry Application
Description
Ultra-Stick Shotcrete dry is a pre-blended, accelerated dry shotcrete containing carefully selected components. Ultra-Stick Shotcrete has greatly enhanced shooting characteristics and physical properties.
Uses
In the dry process, Ultra-Stick Shotcrete is pneumatically conveyed dry or predampened through an Aliva dry machine or a Thiessen Team Predampener and water is added at the nozzle. The shotcrete impacts the surface at high velocity resulting in a well compacted, high quality shotcrete with excellent bond. Some common uses include:
- Slope stabilization
- Initial and secondary tunnel support
- Structural linings
- Concrete rehabilitation
Ultra-Stick Shotcrete Dry may be used in combination with steel fiber or poly fiber reinforcement (in super sacks only) to enhance load carrying capacity and with non-caustic shotcrete accelerators to provide high strengths and fast set times. It can be blended to meet ACI 506 gradation #1 or #2.
Advantages
Stickiness: Bagged Ultra-Stick Shotcrete has vastly improved cohesion characteristics compared to conventional shotcrete. This stickiness saves time and money because:
- Sagging and sloughing are eliminated
- Thick layers can be applied in a single pass in both the vertical and overhead orientations. This increase shooting efficiency. Passing over work two or three times to achieve a certain thickness is no longer required
- Bagged product has the admixtures including fiber already in the mix.
- Ultra-Stick Dry Application requires lower equipment start-up costs.
Technical Data | Test Method | MPa | PSI |
---|---|---|---|
Test | CAN3-A23-1 4C
ASTM C42 |
||
Compressive Strengths | |||
1 Day | 10 | 1,500 | |
7 Day | 20 | 3,000 | |
28 Day | 30 | 4,500 | |
First Crack Flexural Strength | ASTM 1018 | 6.8 | 986 |
Boiled Absorption | ASTM C842 | 5% | |
Volume of Permeable Voids | ASTM C842 | 14% | |
Toughness (10lbs.GSF/yd3) | ASTM 1018 | 1 - 5 3.5 | |
1 - 10 5.0 | |||
Set Times | ASTM C403 | Initial set 10 Minutes |
|
(3% accelerator) | Final set 15 minutes | ||
Freeze / Thaw Resistance | ASTM C555 Acceptable 80% |
Ultra-Stick | |
Shotcrete 95% | |||
Rebound | Consultant's Test | Vertical 12% Overhead 20% |