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MaSTER Disk-Ankraj® is a special anchor (post-install type adhesive/bonded anchor) under patent protection and is a key material of the MaSTER FRAME® method. In addition to high shear strength and high performance in low strength concretes, fewer anchors are used in comparison to conventional anchors, providing economic and fast solution.
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Advantages of MaSTER Disk-Ankraj®

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High Shear Strength

Use of Fewer Anchors

Minimum Damage on the Structural System

Less Dust , Noise and Vibration During Installment

High Shear and Pull-out Performance in Low Strength Concretes

High Performance in Low Embedment Depth (160 mm ～ )

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Difference in installation between conventional anchor and MaSTER Disk-Ankraj® in a similar combination.

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Shear Strength of MaSTER Disk-Ankraj®

MaSTER Disk-Ankraj® is a patented special anchor (post-install type adhesive/bonded anchor) and has high shear strength even in low-strength concretes. Thanks to its high shear strength, MaSTER Disk-Ankraj® offers installation opportunity with fewer anchors and shorter embedment depth in comparison to conventional anchors. The high shear strength of MaSTER Disk-Ankraj® has been confirmed by extensive tests carried out in Istanbul Technical University Structural and Earthquake Engineering Laboratory
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According to the result of ITU Structural and Earthquake Engineering Laboratory Test, it has high shear strength in low-strength concrete (7.94 MPa) with low embedment length (192 mm).
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Residual Pull-Out Strength of MaSTER Disk-Ankraj®

In addition to its high shear capacity, MaSTER Disk-Ankraj® also has a high residual pull-out capacity in proportion to the embedment length of the anchor. Thanks to its special form, MaSTER Disk-Ankraj® has high pull-out strength even after shear failure. The high pull-out strength of MaSTER Disk-Ankraj®, even after the shear failure, has been confirmed by extensive experiments conducted in Istanbul Technical University Structural and Earthquake Engineering Laboratory
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According to the result of ITU Structural and Earthquake Engineering Laboratory Test, it has high shear strength in low-strength concrete (7.94 MPa) with low embedment length (192 mm).
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MaSTER Disk-Ankraj® Installation

Contrary to the hammer drilling used in the installation of conventional anchors, for the installation of MaSTER Disk-Ankraj®, the holes are drilled in the existing structural members by special diamond bit core drilling machines, and the work is completed without damaging the existing structural members during installation. With a low embedment length starting from 160 mm, hammer drilling is not necessary unlike conventional anchors.
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Drilling the MaSTER Disk-Ankraj® core by a special diamond core bit drill.

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Special diamond core bits developed for MaSTER Disk-Ankraj® installation allows;

Less dust, noise and vibration during execution.

Execution while the building to be retrofitted continues to function.

Optimal solution for dust and vibration sensitive structures.

Minimal damage to existing structural members

Working without the need for hammer-drill

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Other Areas of Use of MaSTER Disk-Ankraj®

- Concrete-Steel Connection for Retrofitting Members–

In addition to the MaSTER FRAME® method, MaSTER Disk-Ankraj® is also used as a fastening element in the assembly of the retrofitting members used to strengthen the structures to the existing building. Especially where there is an effective transfer of shear force in the anchorage of the retrofitting members to the structural system of the existing building, MaSTER Disk-Ankraj® provides secure connections by shorter embedment length and fewer installations.
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Use of MaSTER Disk-Ankraj® as a fastener in a joint where high shear force is transferred.