Rock Anchoring by using ICFS CM585PE-PRO Pure Epoxy Injection Mortar
Rock Anchoring in Indian Conditions Using ICFS CM585 Pure Epoxy Mortar :
A Field Study in Collaboration with COEP and Viraj Engineers
Objective :
To determine the safe pull-out capacities and bonding performance of steel rebars anchored in rock strata
using ICFS CM585 Pure Epoxy, under realistic site conditions in India.
Background & Challenge :
With growing demand for high-rise construction, deeper foundations often reach rock strata where hydrostatic uplift pressures become significant. Traditional anchoring methods are slow, costly, and poorly suited for wet, uneven surfaces. There's been a lack of documented performance data under Indian conditions.
Methodology :
• Sites: Two live construction sites in Pune with different rock types intact bold and bold rock.
• Testing Oversight: Dr. Inshwar Sonar (Assistant Professor, COEP), with certified calibrated equipment.
• Data Captured: Pull-out strength, elongation, failure modes.
Key Findings :
• Bond Stress: Decreased with bar diameter (e.g., 16mm: 7.2 T/mm, 32mm: 5.71 T/mm)
• Max Stress: 32mm bars showed highest bond strength (3.38 MPa) due to greater surface area
• Rock Influence: Intact basalt out performed fragmented rock by 15-20%
• Failure Modes: Predominantly failures found of rock breakage and no bar fractures
• Anchor Orientation: Vertical and horizontal anchors showed comparable performance with proper
installation technique
Design Recommendations :
• Account for rock type, bar diameter, moisture levels and orientation
• Use site-specific pull-out values to design anchor embedment depths
• ICFS CM585PE is suitable for demanding conditions like uneven, water-exposed rock surfaces
Conclusion :
For structural rock anchoring using pure epoxy injectable mortars, this first of its kind field study
validates the application in Indian geology. ICFS CM585PE provides a reliable, tested alternative to
conventional systems, ensuring both speed and safety in modern foundation engineering.
Description :
CM585 is a 2 component high strength pure epoxy chemical anchoring resin system. It is
designed for deep embedment and large diameter holes due to its zero shrinkage and longer working
times. For diamond drilled holes, with rebar, and in areas of high chemical exposure eg. Seasalt and
swimming pools.
Specific Benefits :
- Long working times
- High loads possible
- High chemical resistance
- Use with potable water
- Fixing studs in wood
- 24 Month shelf life
- Corrosion resistance
- Diamond drilled holes
- Zero shrinkage
- European approved
- Fire approved
- Studs and Rebar
- A+ Rating VOC content
- ICFS Anchor design software
- Cracked Noncracked concrete
- Hammer drilled holes
- Small edge distance and spacing
- Variable embedment
- Depth Static quasi load
Approvals :
• ETA Option 1 ETAG 001 for cracked concrete with studs and rebar TR029
• ETA Option 1 ETAG 001 for rebar TR023 : Approved for Seismic Loads C2
• F120 Fire Test report
• ICC-ES Approval ESR 3853
• BS6920 for use with potable water WRAS Approval 1309522
• ETA approved in flooded holes, wet and dry concrete
• Tested according to LEED 2009 EQ c4.1, SCAQMD rule 1168 (2005)
