Compression Pads

Neoprene Compression Pads are designed for use with steel retainers as part of an unbonded capping system for compression testing of concrete cylinders. The pads conform to surface irregularities to ensure uniform load distribution and consistent test results.  For assistance selecting the appropriate pad, refer to ASTM C1231 or contact our Sales Team.

• Flows into surface irregularities to eliminate air pockets
• Provides uniform load distribution for consistent breaks
• Patented “stay-in-place” nubs securely hold pads in steel retainers
• Reusable and durable for repeated testing applications

Manufacturing advantage:

• Our compression pads are individually molded – not die cut
• Molding ensures a consistent material blend throughout, resulting in more uniform performance
• Unlike die-cut (sheet “cookie cutter”) pads, molded pads provide greater quality consistency
• Allows for integrated “stay-in-place” nubs for easier insertion and removal from retaining cups
• Cleaner edges improve durability and extend pad life

Available options:

• 50 Durometer – for design strengths 1,500 to 6,000 psi
• 60 Durometer – for design strengths 2,500 to 7,000 psi
• 70 Durometer – for design strengths 4,000 to 12,000 psi*
• 90 Durometer – for design strengths above 12,000 psi**

*Qualifying tests must be performed for strengths over 7,000 psi per ASTM requirements.

**90 Durometer pads are available only in 4", and are die cut, not molded.  There is a significant amount of supporting data for the use of unbonded caps for strengths above 12,000 psi, but such use is not currently addressed in ASTM C1231.  The use of unbonded caps for testing in this strength range requires the approval of the project engineer.

Compression Pads are also available for purchase in sets of two. Please contact our Sales Team for pricing and ordering information.