The clegg hammer also called the clegg impact soil tester consists of a compaction hammer operating within a vertical guide tube. A system for calibration of the marshall compaction hammer. It helps you to keep inventory and reminds you the scheduled dates. Drop height is 12 loosely fitting guide sleeve controls drop height without restricting the free fall of the weight. Cycleops h2 and hammer, do not need to be calibrated as often as wheelon trainers, as there. The paper also introduces a simple calibration procedure to check that the vibrating. Full text of a system for calibration of the marshall compaction hammer see other formats. The helium 3 tubes in the gauge can only detect slow neutrons. Drop height is 18 loosely fitting guide sleeve controls drop. Manual marshall compaction hammer compaction and moulds. The scas compaction device analysis system software allows the calibration of the sensor, data collection of hammer operation during sample compaction, and. Apr 21, 2018 kalibro is an open source free software to manage devices and tools for calibration and maintenance records.
Astm d7380 15 standard test method for soil compaction. When the hammer is released from a fixed height, it falls through the tube and strikes the surface. Heavier duty 10 kg and 20 kg versions are manufactured by sdi for testing harder materials and roadworks. Takes compaction readings to a depth of 18 in 45 cm exclusive ultrasonic depth sensor captures readings in 1 in 2. Because we export our surveying instruments and construction material testing equipment in africa, quality is above all the most importance to our company. Advice should be sought from brrl if a locally available replacement for the leighton buzzard sand is used and the replacement does not achieve a mean dry density of 1. Includes lead deformation apparatus, micrometer and 50 lead calibration cylinders. Vibration compaction set used to compact soil samples for use in tests referencing astm d738208 methods.
Astm d2168 102018 standard practices for calibration. Soil testing equipment and software ele international. Calibration vid 0127 impact hammer calibration youtube. The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. The hammer falls through the tube when released and strikes the surface under test, decelerating. This method provides instructions for checking the critical dimensions of the proctor hammers. Army corps of engineers coe compaction hammers feature a recoil mechanism in the foot assembly to reduce wear on internal components, have a removablereplaceable tamping face, and allow for slight drop adjustability. Vibration compaction hammer, ipc global, 1407161653100. Forney manufactures construction materials testing equipment for the concrete, asphalt, soil industries as well as automated control systems so you have the right data, every time. Marshall hand compaction assembly, asphaltbituminous. The assembly consists of a wooden compaction pedestal, support rod to hold the hammer in perpendicular position, compaction hammer and mould holder.
When the hammer strikes the soil surface, a precision. Jul 14, 2015 calibration vid 0127 impact hammer calibration blissservices thailand. Onepoint vibrating hammer compaction test for granular soils. Drop height is 18 loosely fitting guide sleeve controls drop height without restricting the free fall of the weight. Providing everything from a simple pocket penetrometer to a sophisticated triaxial soil testing system with control and data acquisition software, ele soils testing equipment includes all of. Manual sleeve compaction hammer conforms to aashto t180 standards. Vibration compaction hammer measurement systems ltd. Gagetrak has a solid track record spanning over three decades and is used at over 12,000 facilities worldwide. The marshall method is used by many state and local highway agencies for the design of hotmix. By downloading files from this ftp service, you are agreeing to this license agreement. Consider the vibrating hammer suitable for use in the vibrating compaction test if the mean dry density of the sand exceeds 1.
Full text of a system for calibration of the marshall. Cal master iso 9000 compliant calibration management software. Marshall compaction moulds, asphaltbituminous mixture. Accurate, reliable and recommended by auditors, gagetrak is the world standard for calibration management software. The unit registers the deceleration in units of impact value iv. Its guide sleeve has four vent holes in each end to release built up air pressure. Have enough mix for at least two or four plugs, depending on the type of mechanical hammer, single hammer, or triple hammer. A laboratory test program evaluated alternative test methods for granular soil. For automatic compaction see automatic marshall compactors, astm. The following are tools that can be used to field test soil compaction and moisture during construction and dig in urban soils. Nuclear gauge basics nuclear gauge manufacturers apnga. Laboratory compaction characteristicts and moisture.
Using the appropriate tamping foot it can also be used for compacting asphalt in the percentage refusal density test. Standard practices for calibration of laboratory mechanical. The hammer has a 4535 g sliding weight with a free fall of 457 mm. The startstop function of the compactor is independent of the counter. Automatic compactor myers soils lab testing equipment. Instrumented impact hammers are a useful and common tool in the structural dynamics and vibration field trouble shooting fields of technology. Standard compaction hammer h4160a manual, moisturedensity hammer meets astm and aashto specs. The old way of accounting for this was to ensure that a warmup was done on the trainer before performing the calibration, and then begin the rideworkout.
Manual, moisturedensity hammer meets astm and aashto specs. Pine instrument company quality testing instrumentation. Fieldscout sc 900 soil compaction meter penetrometer help make decisions regarding areas of the field that require tillage, changes to crop rotation, and planting of cover crops. It is a very direct relationship, more counts more moisture. The weight of the hammer is concentrated at the foot, allowing free fall of the hammer. Kalibro also helps you to satisfy the requirements of the quality management standards like iso9001, as9100 and ts16949. Home calibration instrumented impact hammer calibration. Most noteworthy is our auto levels, sokkia digital levels, duosoft leveling software, fujiyama theodolites, sokkia robotic total stations and certainly gnss rtk gps systems. The hammers, available in sizes from as small as a 0. Scope the mix design procedure of bsms require different size of specimens to carry out the tests specified at the different phases of the mix design procedure, as indicated below.
Compaction hammers compaction hammers are machined from steel and plated for rust resistance. The nuclear gauge determines moisture by releasing fast neutrons that are slowed down, or thermalized, when they interact with the nucleus of hydrogen, a key ingredient of moisture. Manual sleeve compaction hammer conforms to astm d558, astm d698 and ashto t99 standards hammers have a 2 inch 5. Although the procedure is specified by several industry standards, roundrobin testing programs have confirmed wide variability in marshall results. Forney construction materials testing equipment forney lp. Modification of the clegg hammer as an alternative to. The unit can be used to perform standard or modified compaction tests using a 5. Nbs handbook 145, 1986, handbook for the quality assurance of metrological measurements, by john k. Pound one plug with hand hammer and the rest with the mechanical hammer.
Mechanical compactors for lab soil testing humboldt mfg. The test procedures are published in pdf format and may be accessed and printed upon acceptance of this agreement. Phase level 1 level 2 level 3 road category c and d b and c a and b cumulative traffic. Calibration management software automates the process of monitoring and calibrating gauges and other assets, helping organizations ensure consistent quality and increased efficiency. Find the best calibration management software for your business. Providing everything from a simple pocket penetrometer to a sophisticated triaxial soil testing system with control and data acquisition software, ele soils testing equipment includes all of the equipment necessary to run standard test methods in the field or the laboratory. Jul 19, 2014 a typical field testing procedure to determine the load bearing capacity of t. Using the appropriate tamping foot it can also be used for compacting asphalt in the percentage. Test procedures texas department of transportation. Clegg impact soil testers 882883 reliance laboratory equipment.
Evaluation of revised manual compaction rammers and. Army corps of engineers coe compaction hammers feature a recoil mechanism in the foot assembly to reduce wear on internal components, have a removablereplaceable tamping. This method refers to the determination of the maximum dry unit weight and. The marshall method is used by many state and local highway agencies for the design of hotmix asphalt.
Hammer lift compensates the height of the drop for soil thickness in the mold during compaction. Kalibro is an open source free software to manage devices and tools for calibration and maintenance records. The most popular clegg instrument is one using a 4. Downloaded demo file program includes tutorial, practice files, and a detailed manual to assist your evaluation. Laboratory compaction characteristicts and moisturedensity. Marshall hand compaction assembly, asphaltbituminous mixture. A partial video of 1point of a method b standard proctor. The mechanical compactor automatically compacts and rotates mold after each blow while keeping track of the number of hammer blows and shutting off once a preset number of blows is reached. Mechanical hammer should be calibrated against a manual hammer.
The manual, moisturedensity compaction hammer incorporates a 10 lb weight and a drop of 18. Old style hammers are threaded almost to the end of the shaft. The hammer falls through the tube when released and strikes the surface under test, decelerating at a rate determined by the stiffness of the material within the region of impact. The steps for completing hot calibration are the same as the cold calibration. When the hammer strikes the soil surface, a precision accelerometer mounted on the hammer feeds its output to a digital readout unit. Item dimension metric dimension english hammer face, diameter see note 1, below 50. Guide sleeve has four vent holes in each end of sleeve to release builtup air pressure. Humboldt nuclear density gauges, troxler nuclear density.
Provides protection from moving parts during compaction. Hammers have vent holes to prevent back pressure and a comfortable ball end handle. Clegg impact soil testers 882883 black and white united. Manual sleeve compaction hammer conforms to astm d558, astm d698 and ashto t99 standards. Modification of the clegg hammer as an alternative to nuclear. The readout registers the deceleration in units of impact value iv. The pile driving analyzer pda system is the most widely employed system for dynamic load testing and pile driving monitoring in the world. Vibration compaction frame and hammer set humboldt mfg. Includes lead deformation apparatus, micrometer and 50 lead calibration. Spectrum fieldscout sc 900 soil compaction meter john morris.
The tester consists of a compaction hammer operating within a vertical guide tube. The field proctor hammer should be checked yearly for the following. Tinius olsen it504 plastic impact tester part 2 calibration mode. Manual, proctor, moisturedensity compaction hammer meets aashto specs. With a comprehensive team of engineering, production, sales and support professionals, pine test delivers exceptional products and technical support from its.
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