CORECASE
Purpose
CORECASE is a portable light weight coring rig for quickly obtaining drilled cores that are accurate in diameter, have straight sides, and are perpendicular to the surface. In addition to determining in-place compressive strength, drilled cores can also be used for the following purposes:
- Verification of flaws identified by NDT methods such as the s’MASH impulse-response system; the DOCter impact-echo system; and the MIRA and EyeCon pulse-echo systems
- Preparing a partially drilled core for conducting a pull-off test with BOND-TEST in accordance with BS 1881:207 or ASTM C1583
- Other laboratory tests such as: rapid chloride penetration using the PROOVE’it system, bulk conductivity using Merlin, air-void parameters using the RapidAir system, or for petrographic analysis
Principle
A thin-walled coring barrel with a high-performance diamond bit is attached to a water-cooled drill rig weighing between 1.8 kg and 3.5 kg. The drill rig pushes the drill barrel forward concentrically thereby avoiding bending forces during drilling. A special plastic coupling is used between the electric drill and the coring barrel to reduce vibration of the bit, ensuring a long life for the diamond bit and a smooth core surface. The drill rig is kept securely perpendicular to the surface by adjustable clamps anchored to the surface or by a suction plate. The end result is a quickly drilled core that has a smooth surface, accurate diameter, and drilled perpendicular to the surface. Two versions are available: CORECASE CS-75 for a 75-mm core diameter and CORECASE CEL-100 for a 100-mm core diameter.
Example Applications
Coring with the CS-75 rig clamped to the surface
The CS-75 coring rig attached to the suction plate before conducting BOND-TEST
Coring with the CS-75 rig for inspection of cracks following chloride extraction
Coring with the CEL-100 rig to obtain specimen for testing with PROOVE’it for chloride permeability
CORECASE CS-75 (75-mm core)
| Item | Order # |
|---|---|
| Coring rig with coupling | CC-10 |
| Handles for coring rig, 3 pcs | CC-20 |
| Coring bit, 75 mm x 110 mm | CCB-75/110 |
| Water pump with 2 hoses | CC-30 |
| Clamping pliers, adjustable, 2 | CC-40 |
| Set of anchoring tools, 8 mm | CC-50 |
| 8 mm expansion anchors, 20 | CC-60 |
| Chisel | CC-70 |
| Hammer | CC-80 |
| Core lifter, 75-mm diameter | CC-90 |
| Wrench, 14 mm | CC-100 |
| Measuring tape | CC-110 |
| Set of spare bearings for coring rig | CC-120 |
| Reinforcement locator | CC-130 |
| Manual | CC-140 |
| Attaché case | CC-150 |
| Optional item | |
| Suction plate | CC-160 |
| Vacuum pump | CC-170 |
| 1150 W electric drill | CC-180 |
CORECASE CEL-100 (100 mm core)
| Item | Order # |
|---|---|
| Coring rig with coupling | CC-15 |
| Handles for coring rig, 3 pcs | CC-20 |
| Coring bit, 100 mm x 210 mm | CCB-100/210 |
| Water pump with 2 hoses | CC-30 |
| Clamping pliers, adjustable, 2 | CC-40 |
| Set of anchoring tools, 12 mm | CC-55 |
| 12 mm expansion anchors, 20 | CC-65 |
| Chisel | CC-75 |
| Hammer | CC-80 |
| Core lifter, 100-mm diameter | CC-95 |
| Wrench, 14 mm | CC-100 |
| Measuring tape | CC-110 |
| Set of spare bearings for coring rig | CC-120 |
| Reinforcement locator | CC-130 |
| Manual | CC-145 |
| Attaché case | CC-155 |
| Optional item | |
| 1150 W electric drill | CC-180 |
Extension rods, 100 mm long, for drilling deeper than 110 mm (CS-75) or deeper than 210 mm (CEL-100) are available on request, Order # CC-190.
Additional coring bits
For CORECASE CS-75
| Core diameter × length | Coring bit # |
|---|---|
| 25 mm × 110 mm | CCB-25/110 |
| 35 mm × 110 mm | CCB-35/110 |
| 50 mm × 110 mm | CCB-50/110 |
| 75 mm × 110 mm | CCB-75/110 |
For CORECASE CEL-100
| Core diameter × length | Coring bit # |
|---|---|
| 25 mm × 210 mm | CCB-25/210 |
| 35 mm × 210 mm | CCB-35/210 |
| 50 mm × 210 mm | CCB-50/210 |
| 75 mm × 210 mm | CCB-75/210 |
| 100 mm × 210 mm | CCB-100/210 |
