2014 2 15 nbsp 0183 32 ASTM D4435 Standard Test Method for Rock Bolt Anchor Pull Test anchors rock displacement field testing loading tests mines pull testing rock shear testing ICS Number Code 93 020 Earth works Excavations Foundation construction UndergroundRock mechanics is an important field of geotechnical engineering as it is the theoretical and applied science concerning the physical behavior of rocks and rock masses We offer an extensive range of modern laboratory solutions for strength stiffness and durability determinations according to international standards suitable for a wide range of rock types Load the bolt in ten equal downhole end of the rock bolt and screw on the anchor When increments and unload it in ten equal decrements in position torque the bolt to the manufacturer s recommended 7 4 3 Apply the load smoothly and rapidly level to set the anchor BOLT I I PULL AND BOLT EXTENSION 4 3 An initial arbitrary load not greater than 5 kN shall be applied to take up slack in the equipment 4 4 The anchor rock belt shall be tested by increasing the load in incre ments until total2017 10 1 nbsp 0183 32 A laboratory pull out test sample consists of the bolt rock bolt or cable bolt the rock sample the metallic tube and the materials used to grout the bolt to the rock and to the tube The proper preparation of the samples in particular the accurate coaxiality of all elements is very important to ensure the correct assemblage of the experimental bench

2014 2 15 nbsp 0183 32 Thus to make sure the bolt response during the test is minimal and predictable high strength short length 6 to 8 ft 1 8 to 2 5 m bolts have been specified The bolt should be just long enough to make sure that failure occurs in the anchor system and not from the reaction pad bearing down on the rock mass A 10 67 m 35 ft rock bolt was placed in a hole with a depth of 9 45 m 31 ft and a 75 mm 3 in diameter and grouted in place The test was stopped at 890 kN 100 t to prevent any possibility of a catastrophic failure The conduct of the test is described theANCHORAGE PULL TESTING FOR FULLY GROUTED ROOF BOLTS Christopher Mark Rock Mechanics Team Leader Craig S Compton Engineering Technician David C Oyler Mechanical Engineer Dennis R Dolinar Mining Engineer National Institute forRock Bolt Pull Out Test Apparatus 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 5 mts truss Pull Handle Testing Machine For Industrial Capacity 201t 20kn Get Quote Rockbolt Pullout Test Apparatus Digital Rock Bolt Pull Out Test Apparatus For Laboratory Capacity 500KN 65 000 Get Latest Price Capacity 500KN Display Type Digital Brand

Determining Rock Bolt or Anchor Tension Using a Torque Wrench This procedure is under the jurisdiction of the Materials Engineering and Research Laboratory code 86 68180 Technical Service Center Denver Colorado The procedure is issued under the fixedSubi Tek Offering Stainless Steel Rock Bolt Pull Out Test Apparatus Automation Grade Manual at Rs 85000 piece in Coimbatore Tamil Nadu Read about company Get contact details and address ID 21459247248Rebar Bolt Pull Tester Manual Pump Jack Pull Rod Connectors and Stand STEP1 Put Rock Bolt Adaptor On adaptor made to fit your rock bolts STEP 2 Put Stand On Step 3 Put Jack on STEP 4 Connect Jack with Pump 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 capacities of rock bolt anchors The system comprises of a central hole jack hand pump with a Rockbolts and cables 4 70 of the capacity of the bolt be installed initially This provides a known load with a reserve in case of additional load being induced by displacements in the rock mass One of the primary causes of rockbolt failure is rusting or corrosion

Exporter of Rock Testing Equipments Rock Bolt Pull Out Test Core Cutting Grinding Machine Polishing Lapping Machine and Rock Triaxial Testing Machine offered by Veekay Industries New Delhi Delhi Our company is the market leader in the field of offering Rock Triaxial Testing Machine 2020 9 19 nbsp 0183 32 This Video is copyright Protected Embedding to website and sharing this youtube link is allowed TunnelExcavationunder construction tunnel tunnel project Academia edu is a platform for academics to share research papers Designation D 4435 – 84 Reapproved 1998 Standard Test Method for Rock Bolt Anchor Pull Test1 This standard is issued under the fixed designation D Testing Equipment Establish Accurate Load Levels Here at Pull Out Testing UK we utilise the latest technologies for all our testing services That is why we use a wide range of industry approved or custom made test equipment and accessories for establishing the holding force of anchors bolts and fixings in all construction materials 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 should be mounted in the same manner and method and in the same material it is envisioned or projected to be used in a construction