ASTM E488 Static load anchorage testing machine, Static Load Anchoring test equipment, ISO 22477-5. 

The microcomputer-controlled static load anchorage testing machine is mainly used for static load anchorage performance testing and research of prestressed steel strand anchors, clamps, and connectors for concrete structures and components, prestressed steel structures, cable anchors, clamps and connectors, and prestressed tendons. 

The static load anchorage performance tests for anchors, clamps, and connectors include: efficiency coefficients ηa for anchor connectors, ηg for clamps, and the total strain in the assembly when the measured ultimate tensile force is reached. The maximum tensile force (measured ultimate tensile force Fapu) at which the steel strand-anchor assembly breaks in static load tests. The maximum tensile force (measured ultimate tensile force Fgpu) at which the steel strand-clamp assembly breaks in static load tests. Auxiliary tests/steel strand retraction tests: the retraction of the steel strand at the tensioning end is <5mm. The total strain εapu automatic measurement device and the steel strand retraction automatic measurement device automatically collect and process data, ensuring precision and efficiency.

Nominal diameter/average outer diameter of steel strand Dn/mm: 9.50/9.53; 11.10/11.11; 12.70; 15.20/15.24; 17.78/17.80; 19.30; 20.30; 21.80; 28.60. Tensioning end anchorage: YM round anchor tensioning end anchorage, YMB flat anchor tensioning end anchorage, YJM round wedge anchor (single and multi-hole wedge), BJM flat wedge anchor (single and multi-hole wedge), DM high-strength steel wire end anchorage, YGM precision-rolled threaded rebar nut, GZM conical plug steel conical anchor, RZM hot cast conical plug anchor, LZM cold cast conical plug tapered head anchor. 

Fixed end anchorage/wrapped grip anchorage/extruded anchor/P anchor: YMH round anchor fixed end embossed anchorage, YMHB flat anchor fixed end embossed anchorage, YMP round anchor fixed end extruded anchor, YMPB flat anchor fixed end extruded anchor, DTM support type tapered head anchor, LMM support type nut tapered head anchor, JYM wrapped grip extruded anchor, YHM wrapped grip embossed anchor.

1. static load anchoring testing machine is a newly developed type designed according to the international standard GB/T14370-2000 "Anchors, Clamps, and Connectors for Prestressing Tendons". It is used to perform performance testing on anchors, clamps, and connectors for prestressing tendons. The testing machine adopts hydraulic servo automatic control, realizing loading, holding, unloading, pressurizing, and reversing during the testing process, and conducts static load tests in accordance with the provisions outlined in sections 6.1 and 6.2 of GB/T14370-2000. A load sensor installed at the end of the piston measures the test force output from the hydraulic cylinder; a displacement sensor measures the approximate deformation of the sample; a microcomputer completes the setting, data collection, processing, analysis, and display of test parameters during the experiment; it comes with dedicated software to measure the static anchorage performance of anchors (main parameters include the efficiency coefficient and ultimate tensile strain, etc.) according to the aforementioned national standards, and then conducts statistical processing of test data, followed by outputting and printing the required test report.

2. A powerful self-built testing database is established, allowing test data to be saved, queried, and called at any time, enabling data transmission and conversion with the user's local area network and the Internet.

3. Automatic switching of test force measurement is achieved, with a measurement range equivalent to 1%-100%. It is accurate, stable, and reliable, with robust self-checking functions and comprehensive protection features.

Mmachine specification: 

1. Maximum test force: 5000kN;

2. Measurement range and accuracy of test force: 500-5000 kN; Accuracy of ± 1% without any grading

3. Displacement measurement range and accuracy: 0-300mm; accuracy is ± 1% F.S

4. Relative resolution ± 0.5, repeatability ± 0.5

5. Sample specification: Φ 9.50; Φ11.10； Φ 12.70, Φ 15.24mm (nominal diameter)

6. Test capability: 19 hole anchor test

7. Stretching distance: ≥ 3000mm

8. Stroke of hollow hydraulic cylinder: 200mm

9. Test machine host form: horizontal

10. The external dimensions of the testing machine are approximately (length, width, and height): 4500x1000x800mm

11. The total weight of the machine is approximately 6000kg

Technical parameters of the control part:

2.1. Test force measurement display section:

(1). Measurement method: high-precision load sensor is used to measure the test force

(2). Range conversion method: automatic/manual switching

(3). Test force display method: microcomputer display

(4). Test force range and accuracy 500-5000kN; accuracy: better than ± 1%

2.2. Displacement (deformation) measurement display section:

(1). Measurement method: high-precision displacement sensor measurement method is adopted

(2). Range conversion method: automatic/manual switching

(3). Deformation display mode: microcomputer display

(4). Deformation range and accuracy: 1000mm; ± 1%

2.3 Hydraulic control part:

Control method: Adopting servo control

1. One set of 5000kN hollow double rod hydraulic cylinder

2. 1 hydraulic servo control oil source

3. 1 set of high-precision load sensor

4. One set of displacement measuring device (measuring range 300mm)

5. 1 set of electrical control and automatic processing system (comprehensive) for testing machine

6. 1 set of anchor and assembly components

7. 1 set of pre tensioning jack (200kN)

8. 1 HP branded computer

9. 1 HP A4 inkjet printer

ASTM E488 / E488M-18 Standard Test Methods for Strength of Anchors in Concrete Elements

ANSI/ASSE Z359.18-2017 Safety Requirements for Anchorage Connectors for Active Fall Protection Systems - Part of the Fall Protection Code