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Hollow Grouting Anchor
Click:  Update:2016-12-12 21:43:46  【Print】  【Close

Hollow Grouting Anchor

Hollow grouting anchor cable is mainly composed of mine anchor, anchor, tray, stop grouting plug and other components. Hollow grouting anchor cable body is made of high strength steel wire for prestressed steel wire. High strength spiral ribbed pre-stressed steel wire is a new type of deformed steel wire and its main feature is rolling drawing process of semi-finished products after the last plastic deformation drawing, wire surface form 3 to 6 continuous convex spiral ribs and spiral rib with base circle as a whole, together with a section of wire, that regardless of how long the wire at any point in its cross-sectional area are equal. Therefore, both excellent characteristics of shape processing method, material properties were smooth steel wire, steel wire, deformed, and three shares of steel strand can not be replaced. Has the characteristics of high strength, good plasticity, low relaxation, good straightness, and strong bonding strength of the anchoring agent.

Technical standard for hollow grouting anchor cable

Model number

SKZ22-1/1770

SKZ29-1/1670

Nominal diameter mm

Ф22

Ф29

The number of single strand wire

8

9

Tensile strength of steel wire MPa

1770

1670

Maximum force of steel wire

Total elongation Agt

3.5%

3.5%

Tray bearing capacity KN

354

546

Grouting material

And grouting pressure MPa

By 425, cement, water cement ratio of 1:2 cement slurry, grouting   pressure is greater than or equal to 5MPa.

By 425, cement, water cement ratio of 1:2 cement slurry, grouting   pressure is greater than or equal to 5MPa.

Anchorage efficiency coefficientηa

0.95

0.95

Limit load

Total strainεapu

2%

2%

Mounting aperture mm

Ф28~Ф32

Ф38~Ф42