Bend Test of Hollow bar Anchors as per the American Standard

Technicals

Bend Test of Hollow bar Anchors as per the American Standard

We have published an article about the bend test of ONTON hollow bar anchors.

The test is a good way to measure the ductility of a grout boned anchors on site.

(The ductility also can be checked by a tensile test which calculates Agt.)

For the concrete reinforcement work of civil ground engineering, ASTM A615 has proposed the details of a bending test for steel bars.

To be brief, the standard demands the reinforcing material shall withstand being bent around a pin without cracking on the outside radius of the bent portion.

The requirements for degree of bending and sizes of pins are below:

Bend Test Requirement of Hollow Bar Anchors

For hollow bar anchors, bending around 180 degrees (U shape) over a pin diameter D > 6 x Diameter is required. Furthermore, there shouldn't be any visible cracks or hollow bar breaks.

For the recent years, the grouting concrete anchor bars are applied in micropiles, soil nails, wall tiedown and tieback anchor systems, etc. And there have been existing standards in Europe and America for these applications.

Self-drilling hollow bars with high ductility are the reliable protections for civilians in case of earthquake and other disasters happen.

All ONTON hollow bar anchors can pass this bend test easily, benefiting by its high ductility. And in the same time, there isn't any loss of its strength performance.

The ductility is paid more and more attention either in Europe or America. Whether from the standpoint of safety or market, people need High Ductility hollow bar anchors.

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