Tension Jack/Pull Test Kit
The pull test kit consists of two assemblies: a mechanical assembly which includes a claw, stand, nut, & spindle. a hydraulic assembly which includes a hollow core ram, hand pump, gauge, & hose. The gauge measures …
Concrete Bond Strength, Pull-off and Anchor Pull-out Testers …
Humboldt provides an extensive selection of Anchor Pull-Out testers with pulling capabilities from 5kN to 145kN. An array of different bridge sizes and heights are also available. Our standard-duty anchor testers HC-2957DU Anchor Test Kit with 25kN Gauge available with a 25kN analog gauge as standard, but can be upgraded to a digital gauge.
A Deep Dive into Anchor Bolt Pull-Out Testing
ASTM D4435 – Standard Test Method for Rock Bolt Anchor Pull Test. ASTM C900 – Standard Test Method for Pullout Strength of Hardened Concrete. In …
Characterising the behaviour of rockbolts based on in …
Following a review of the Ontario Rock Bolt Pull Test Database, a series of statistical tests were used to characterise the performance of the various bolts. This has allowed the investigation of the compliance of bolts with supplier specifications, working capacity, etc. Of particular interest was to provide representative
ASTM-D4435 | Standard Test Method for Rock Bolt Anchor …
5.1 Rock bolts are used for support in a variety of mining and civil engineering situations. 3 The pull test may be used to provide a quantitative measure of the relative performance of different anchor systems in the same rock type. Anchor systems may be different mechanical anchors or different bond materials or lengths for grouted …
YIELD-LOK Bolt
YIELD-LOK ® Bolt is a new generation of yielding rock bolt that provides reliable ground control in both seismic and convergence ground conditions. YIELD-LOK Bolt is fully grouted with resin or cement in application. ... the bolt yields at a constant load to absorb dynamic energy by pulling the upset through the polymer (i.e. plough effect ...
5 Types of Rock Bolt and Their Uses
A fully encapsulated bolt type of rock bolt is the most commonly used type of rock bolt and is used to strengthen surfaces and foundations in the mining and civil construction industries. Rock bolts are specifically designed for geotechnical applications employed to stabilize tunnels, excavations, walls, and other structures built in expansive ...
Underground hard rock drills
The multicarrier function can help boost productivity with bolting heads set up for multiple rock bolts. Learn more Timberock fixed (up to 18 feet) and telpic (up to 16 feet) feeds are designed for seamless integration with Montabert drifters, and feature lightweight, components engineered for durability and to maximize your drilling ...
Rock Bolting: Advanced Techniques for Structural Integrity
The rock bolts are then tensioned using specialized equipment to create a pre-stress force in the rock or soil. This pre-stress force helps to counteract the potential movement or instability of the rock or soil mass. It also enhances the overall stability and load-bearing capacity of the structure or slope being reinforced.
Standard Test Method for Rock Bolt Anchor Pull Test …
5.1 Rock bolts are used for support in a variety of mining and civil engineering situations. 3 The pull test may be used to provide a quantitative measure of the relative performance of different anchor systems in the same rock type. Anchor systems may be different mechanical anchors or different bond materials or lengths for grouted …
Bolters
The BH bolting head and compact yet powerful rock drill combine to create a machine that allows installation of the longest possible bolts. DS511 ... DS411 is a mechanized rock reinforcement drill rig designed to install the most common rock bolt types in combination with steel wire meshes when required. This bolter is controlled by a ...
Rock Bolt Pull Out Test Apparatus
Standards:IS 11309, ASTM D 4435 Specification: The objective of the test method is to measure the working and ultimate capacities of rock bolt anchors. The system comprises of a central hole jack, hand pump with a load gauge, directional control value (only for central hole jacks above the capacity of 500 kn), flexible hose pipe … Rock Bolt Pull …
Mining and Rock Excavation Equipment, Mining Machines
longhole drill rigs for underground drilling and bolting are engineered to minimize ore loss and dilution by drilling straight and accurate holes up to 54 meters (177 feet) in length. We offer a comprehensive range of boom types, hydraulic rock drills, carrier size classes and tool selections to ensure optimum hole quality every time.
Anchor Pull Testing
Mechanical Testing Overview. /. Anchor Pull Testing. At Applied Technical Services, we frequently perform anchor pull tests to be used as a quality control measure. When evaluating an anchoring system, the rock bolt …
A Constitutive Model to Reveal the Anchorage Mechanism …
The anchoring agent is same as the material used for the target rock bolt. Then, the pulling test can be conducted on this newly installed rock bolt. Since it has a short bonded length, the result can be used to calculate the properties of the contact between the bolt shank and anchoring agent. Then, these properties and the bonded …
Magnetic Wire Pulling System
Connect wire or cable to the flexible stainless-steel leader and rare-earth block magnet that make up the in-wall unit. Simply maneuver the magnetic hand-held unit over the outside of the wall allowing the strong, rare-earth magnets …
THE POSSIBILITIES AND LIMITATIONS OF ANCHOR SITE …
4 As shown in Fig. 2, the relevant testing and evaluation methods are: (a) ETAG 029 Annex B, Metal injection anchors for use in masonry, recommendations for tests to be carried out on construction works (b) ETAG 020 Annex B, Plastic anchors for multiple use in concrete and masonry for non-structural applications, recommendations for tests to be carried out on
Rock Bolt Pull Out Test Apparatus
Rock Bolt Pull Out Test Apparatus. ZI 6013. Standards:IS 11309, ASTM D 4435. Specification: The objective of the test method is to measure the working and ultimate …
A load measuring anchor plate for rock bolt using fiber …
The proposed load measuring anchor plate is a normal anchor plate instrumented with FBG strain sensor. In order to measure the load of an anchor plate for a rock bolt, a 2 mm deep v-shaped groove was cut on the inner surface along a length of the plate, and an FBG was installed into the center of the groove using cyanoacrylate …
ROCK BOLT APPARATUS
Product Description - Rock Bolt Pull Out Test Apparatus. The objective of the Rock Bolt apparatus or Rock Bolt Pull Out Test Apparatus is to measure the working and ultimate capacities of rock bolt anchors. The …
rock bolt pulling machine
rock bolt pulling machine. Ver artículo. Support Materials - kuplakgroup.co.za. The HRB® bolt is a hollow steel bolt used in resin or grout installations, typically in hard rock mines where larger diameter support holes are drilled. The 27mm HRB® bolt is typically used with 34mm, 36mm and 38mm diameter holes.
Pull Out Test Apparatus for Short Term Strength
Pull Out Test Apparatus. Pull Out Test Apparatus is used to measure short term strength of an installed rockbolt under field conditions. The strength is measured by a pull test, in which bolt head displacement is measured …
Rock bolt | Reinforcement, Anchoring & Stability | Britannica
Rock bolt, in tunneling and underground mining, steel rod inserted in a hole drilled into the roof or walls of a rock formation to provide support to the roof or sides of the cavity. Rock bolt reinforcement can be used in any excavation geometry, is simple and quick to apply, and is relatively
(PDF) Full-scale rockbolt testing in the laboratory
The results show that (1) the PILE element that constitutes the rock bolt-free section with the maximum elongation rate ruptures after modification, while the rock bolt tendon elongation rate ...
Back analysis of grouted rock bolt pullout strength parameters from
Line 2 in Fig. 4 represents the actual relationship between the confining pressure and pulling force per meter of rock bolt. The line is fixed by conducting pull-out test under different confining pressures (at least two kinds of confining pressures). The intercept and slope of the line represents the grout cohesive strength and tangent of the ...
Safer, Simpler, Speedier Rock Bolting
One-step Bolting. Minova has also been working on a one-step bolting technology to make rock bolting safer, faster and more efficient. The company has combined the advantages of its self-drilling anchor (SDA) bolts and injectable, two component bulk resin grouts to create what it calls "a unique offering for the hard-rock mining environment."
Rock Bolt Pull Out Test Apparatus – Sun LabTek
Rock Bolt Pull Out Test Apparatus. Make: LabTek. Model: SL-RK-011. Origin: India. Standards: IS 11309, ASTM D 4435. Specification: The objective of the test method is to measure the working and ultimate …
Application of Wireless Sensor Network in Rock Bolt Pulling …
The research shows that the axial force of the full-length anchoring rock bolt increased with the increase of the load, when the load reached 28MPa, the bolt at the end of rock bolt rod slid; the longitudinal strain of the base of the end anchoring rock bolt was only affected by the top pressure, the shear stress of the middle hollow anchoring ...
Rock Bolt Pull Out Test Apparatus
The objective of the test method is to measure the working and ultimate capacities of rock bolt anchors. The system comprises of a central hole jack, hand pump with a load gauge, directional control value (only for …
Application of Wireless Sensor Network in Rock Bolt Pulling …
The application of rock bolting in the reinforcement of underground engineering and tunnel engineering is becoming more extensive, and the stress distribution pattern of rock bolt is a necessary means for quality monitoring. To investigate the stress characteristics of the rock bolt during usage, this paper tests the stress and strain …