Soil Nailing Technique

Introduction to Soil Nailing

• Developed to address challenges in construction sites with difficult access.
• Aims to reduce deadlines and costs while minimizing environmental impact.
• Enables area gain through effective soil retention solutions.

Salotrate's Role in Soil Nailing

• A leading company in Brazil's soil nailing sector.
• Offers services for both public and private construction projects.
• Invests in soil nailing to provide solutions for soil retention.
• Capable of performing soil nailing in adverse conditions with minimal environmental impact.

Applications of Soil Nailing

• Soil Improvement and Retention:
  • Stabilization in excavations.
  • Stabilization of cut slopes.
  • Ideal for underground levels of buildings where space optimization is crucial.

Geotechnical Stability Studies

• Essential for designing and adjusting soil nailing during execution.
• Involves excavation of sidewalls, either mechanically or manually, depending on soil condition.

Soil Nailing Process

1. Borehole Drilling:
   • Done to project specifications regarding depth and angle.
   • Can use portable or wagon drillers depending on conditions.
   • Water used as a drilling fluid to clean the hole.
2. Sheathing Phase:
   • Reconstitutes excavated space for the hole execution.
3. Injection Grout Preparation:
   • Grout is mixed in high-shear colloidal mixers.
4. Nail Installation:
   • Nails molded in situ consolidate unstable soil by injecting cement grout.
   • Tension resisting nails created by inserting metal bars with injection tubing.
   • Cement grout injected under pressure in multiple phases.
5. Data Collection:
   • Track maximum pressure and volume of cement grout for geological mapping.

Drainage Solutions

• Drain Pipes Installation:
  • Captures water to prevent erosion and regulate water flow.
  • Options include Barbican or continuous linear types.
  • Composed of perforated tubes with protective layers.

Concrete Application

• Cement mixture with steel fibers applied using high pressure.
• No need for metal screening, leading to labor cost savings and higher productivity.
• Aesthetically pleasing finish despite material heterogeneity.

Performance Measurement

• Deformation of sidewalls measured for performance evaluation.
• Use of anchored steel rods at varying depths to measure stretching in relation to concrete face.

Importance of Qualified Workforce

• Successful soil nailing projects require skilled teams.
• Continuous training and experience are crucial for effective project execution.

Benefits of Soil Nailing

• Applicable in all types of civil construction, including residential buildings and dams.
• Flexible equipment suitable for challenging access areas.
• Minimal environmental damage, low noise, and no significant vibrations.
• Clean operation, with simultaneous earth removal.
• Safe and permanent solution with cost-effective and uniform concrete finishes.

Conclusion

• Salotrate's innovative efforts position it at the forefront of the soil improvement sector in Brazil, ensuring solid construction with efficient techniques.