PAR1 Resin Bolt

PAR1 Resin Bolt


The PAR1 Resin Bolt is a resin or grout anchored yielding bolt and can be supplied with attachment points for meshing and lacing.

The resin provides the anchor with immediate support upon installation for tensioning. The anchor has a pair of five paddles which assist in the mixing of the resin and act as additional anchors when the resin is set.

The PAR1 Resin Bolt can be supplied in 18 mm, 20 mm or 22 mm bar depending on requirements. The unit has an elongation of 23% in static conditions and 15% under dynamic loading. The unit is provided with a collapsible load indicator to confirm correct tensioning of the unit when installed, and to assist in post auditing of the installation.

The end of the bolt protruding from the hole has a threaded section over which a washer is placed and held in place by a nut. The nut is also used for pre-tensioning of the unit. The PAR1 Resin Bolt is supplied with a shear pin to facilitate spinning prior to pre-loading. The pin shears to facilitate the tensioning process.

Benefits of the bolt

  • High yield ability
  • High energy absorption
  • Immediate support
  • Pre-tensionable with load indicator
  • Includes attachment points for meshing and lacing directly onto the bolt

Performance specifications

Dimensional Specifications Ø18 Ø20 Ø22
Bar diameter Ø18.3 mm, DIN 405 RD 20 Ø20.3 mm, DIN 405 RD 22 Ø22.3 mm, DIN 405 RD 24
Length of bolt 1.8 m to 3.0 m 1.8 m to 3.0 m 1.8 m to 3.0 m
Typical length of thread (adjustable) 170 mm 170 mm 170 mm
Steel Specifications Ø18 Ø20 Ø22
Yield strength minimum 500 MPa 500 MPa 500 MPa
Yield load typical 127 kN 157 kN 208 kN
Ultimate tensile load typical 162 kN 229 kN 289 kN
Elongation* Ø18 Ø20 Ø22
Average 26.13% 26.13% 25.4%
Standard deviation 2.17% 2.17% 2.17%
Guaranteed static 22% 22% 22%
*Tested as per SANS 6892-1:2010 (Ed. 1.00)