Hammers have vent holes to prevent back pressure and a comfortable ball end handle. The field proctor hammer should be checked yearly for the following. This method provides instructions for checking the critical dimensions of the proctor hammers. The unit registers the deceleration in units of impact value iv. Using the appropriate tamping foot it can also be used for compacting asphalt in the percentage refusal density test. It is a very direct relationship, more counts more moisture. Hammer lift compensates the height of the drop for soil thickness in the mold during compaction. The marshall method is used by many state and local highway agencies for the design of hotmix. 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. Standard compaction hammer h4160a manual, moisturedensity hammer meets astm and aashto specs. Takes compaction readings to a depth of 18 in 45 cm exclusive ultrasonic depth sensor captures readings in 1 in 2. Jul 14, 2015 calibration vid 0127 impact hammer calibration blissservices thailand. Manual, moisturedensity hammer meets astm and aashto specs.
The following are tools that can be used to field test soil compaction and moisture during construction and dig in urban soils. Old style hammers are threaded almost to the end of the shaft. Manual sleeve compaction hammer conforms to aashto t180 standards. The assembly consists of a wooden compaction pedestal, support rod to hold the hammer in perpendicular position, compaction hammer and mould holder. The startstop function of the compactor is independent of the counter. Mechanical compactors for lab soil testing humboldt mfg. Downloaded demo file program includes tutorial, practice files, and a detailed manual to assist your evaluation. Test procedures texas department of transportation. Pine instrument company quality testing instrumentation. Home calibration instrumented impact hammer calibration. When the hammer strikes the soil surface, a precision. A system for calibration of the marshall compaction hammer. Compaction hammers compaction hammers are machined from steel and plated for rust resistance.
Manual marshall compaction hammer compaction and moulds. Kalibro is an open source free software to manage devices and tools for calibration and maintenance records. Its guide sleeve has four vent holes in each end to release built up air pressure. Nuclear gauge basics nuclear gauge manufacturers apnga. Although the procedure is specified by several industry standards, roundrobin testing programs have confirmed wide variability in marshall results.
Cal master iso 9000 compliant calibration management software. The test procedures are published in pdf format and may be accessed and printed upon acceptance of this agreement. Instrumented impact hammers are a useful and common tool in the structural dynamics and vibration field trouble shooting fields of technology. Forney construction materials testing equipment forney lp. Calibration management software automates the process of monitoring and calibrating gauges and other assets, helping organizations ensure consistent quality and increased efficiency. Because we export our surveying instruments and construction material testing equipment in africa, quality is above all the most importance to our company. The scas compaction device analysis system software allows the calibration of the sensor, data collection of hammer operation during sample compaction, and. Vibration compaction hammer, ipc global, 1407161653100. Standard practices for calibration of laboratory mechanical. The unit can be used to perform standard or modified compaction tests using a 5.
Soil testing equipment and software ele international. Marshall hand compaction assembly, asphaltbituminous. Kalibro also helps you to satisfy the requirements of the quality management standards like iso9001, as9100 and ts16949. Used for the compaction of proctor and cbr soil specimens. Evaluation of revised manual compaction rammers and. The hammer falls through the tube when released and strikes the surface under test, decelerating. The steps for completing hot calibration are the same as the cold calibration. A laboratory test program evaluated alternative test methods for granular soil. The hammers, available in sizes from as small as a 0. 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.
When the hammer is released from a fixed height, it falls through the tube and strikes the surface. 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. 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. The tester consists of a compaction hammer operating within a vertical guide tube. The marshall method is used by many state and local highway agencies for the design of hotmix asphalt. The manual, moisturedensity compaction hammer incorporates a 10 lb weight and a drop of 18. Manual sleeve compaction hammer conforms to astm d558, astm d698 and ashto t99 standards. 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. 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. With a comprehensive team of engineering, production, sales and support professionals, pine test delivers exceptional products and technical support from its. Drop height is 18 loosely fitting guide sleeve controls drop height without restricting the free fall of the weight. Apr 21, 2018 kalibro is an open source free software to manage devices and tools for calibration and maintenance records. Cycleops h2 and hammer, do not need to be calibrated as often as wheelon trainers, as there. Includes lead deformation apparatus, micrometer and 50 lead calibration.
By downloading files from this ftp service, you are agreeing to this license agreement. 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. 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. Manual, proctor, moisturedensity compaction hammer meets aashto specs. Automatic compactor myers soils lab testing equipment. Consider the vibrating hammer suitable for use in the vibrating compaction test if the mean dry density of the sand exceeds 1. Calibration vid 0127 impact hammer calibration youtube.
For automatic compaction see automatic marshall compactors, astm. Drop height is 18 loosely fitting guide sleeve controls drop. Modification of the clegg hammer as an alternative to. The hammer has a 4535 g sliding weight with a free fall of 457 mm. 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. It helps you to keep inventory and reminds you the scheduled dates. Onepoint vibrating hammer compaction test for granular soils. Nbs handbook 145, 1986, handbook for the quality assurance of metrological measurements, by john k. Gagetrak has a solid track record spanning over three decades and is used at over 12,000 facilities worldwide. A partial video of 1point of a method b standard proctor. A laboratory test program evaluated alternative test methods for granular soil compaction control and showed that a vibrating hammer method similar to. Pound one plug with hand hammer and the rest with the mechanical hammer.
The helium 3 tubes in the gauge can only detect slow neutrons. Clegg impact soil testers 882883 reliance laboratory equipment. D2168102018 standard practices for calibration of laboratory mechanicalrammer soil compactors compaction laboratory compaction mechanical rammer compactors. Includes lead deformation apparatus, micrometer and 50 lead calibration cylinders. Find the best calibration management software for your business.
Laboratory compaction characteristicts and moisture. Most noteworthy is our auto levels, sokkia digital levels, duosoft leveling software, fujiyama theodolites, sokkia robotic total stations and certainly gnss rtk gps systems. Marshall hand compaction assembly, asphaltbituminous mixture. 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. Laboratory compaction characteristicts and moisturedensity. When the hammer strikes the soil surface, a precision accelerometer mounted on the hammer feeds its output to a digital readout unit. 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. Humboldt nuclear density gauges, troxler nuclear density. Mechanical hammer should be calibrated against a manual hammer. Tinius olsen it504 plastic impact tester part 2 calibration mode. Provides protection from moving parts during compaction.
Vibration compaction set used to compact soil samples for use in tests referencing astm d738208 methods. Using the appropriate tamping foot it can also be used for compacting asphalt in the percentage. Item dimension metric dimension english hammer face, diameter see note 1, below 50. Phase level 1 level 2 level 3 road category c and d b and c a and b cumulative traffic. Marshall compaction moulds, asphaltbituminous mixture. Modification of the clegg hammer as an alternative to nuclear. Manual sleeve compaction hammer conforms to astm d558, astm d698 and ashto t99 standards hammers have a 2 inch 5. Astm d7380 15 standard test method for soil compaction. Vibration compaction frame and hammer set humboldt mfg. The pile driving analyzer pda system is the most widely employed system for dynamic load testing and pile driving monitoring in the world. The weight of the hammer is concentrated at the foot, allowing free fall of the hammer. The clegg hammer also called the clegg impact soil tester consists of a compaction hammer operating within a vertical guide tube. Full text of a system for calibration of the marshall compaction hammer see other formats. Full text of a system for calibration of the marshall.
The paper also introduces a simple calibration procedure to check that the vibrating. 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. The readout registers the deceleration in units of impact value iv. The most popular clegg instrument is one using a 4. Have enough mix for at least two or four plugs, depending on the type of mechanical hammer, single hammer, or triple hammer. Full text of a system for calibration of the marshall compaction. This method refers to the determination of the maximum dry unit weight and.
Drop height is 12 loosely fitting guide sleeve controls drop height without restricting the free fall of the weight. Astm d2168 102018 standard practices for calibration. Spectrum fieldscout sc 900 soil compaction meter john morris. Guide sleeve has four vent holes in each end of sleeve to release builtup air pressure. Jul 19, 2014 a typical field testing procedure to determine the load bearing capacity of t. Vibration compaction hammer measurement systems ltd.
Astm d 698 standard proctor, automatic proctor hammer. Clegg impact soil testers 882883 black and white united. Instrumented impact hammer calibration calibration the. The paper also introduces a simple calibration procedure to check that the.