< Previoustel: +44 (0)1525 249 200 • email: ele@eleint.co.uk • www.ele.com50PermeabilitySoil TestingConstant Head ApparatusThis equipment is used for testing the permeability of granular soils (sands and gravels). The specimen is formed in a permeability cell and water is passed through it from a constant level tank. Take-off points located along the sides of the permeability cell are connected to three manometer tubes mounted on a panel complete with a metre scale. Water passing through the specimen is collected and measured, either for a specific quantity or over a period of time. The reduction of head is noted from the variation of water level in the manometer tubes.25-059325-059125-0580Constant Head Permeability CellProduct Standards:BS 1377-5SpecificationsProduct Code25-058025-0585Nominal Cell inside dia (mm)75114Cell WallTransparent plasticTransparent plasticTake-off Points33End PlatesAnodised aluminiumAnodised aluminiumWeight (kg)4.58Manometer Tubes & StandProduct Code: 25-0591Product Standards:BS 1377-5Comprising three glass tubes of constant bore, metre scale and connecting tubing for cell pressure take-off points, all mounted on a free-standing panel.Permeability Cell Requirements:75 mm Permeability Cell: 1 x set of tubes, 1 x stand114 mm Permeability Cell: 2 x sets of tubes, 2 x standsSpecificationsWeight (kg)9.5Constant Level TankProduct Code: 25-0593Product Standards:BS 1377-5Manufactured from transparent plastic with attachment for wall mounting. The inlet, outlet and overflow pipes are fitted to the base of the tank and can be adjusted for height within the tank. Supplied complete with connecting tubing.SpecificationsWeight (kg)2.4Spares/Consumables:75 mm Gauze Disc - 0339A0016114 mm Gauze Disc - 0342A0016Falling Head ApparatusClays and silts are tested using the falling head technique. Flow of water through the specimen is observed by monitoring the rate of fall of water in the tube. It is essential that soils of very low permeability are sealed inside the cylinder to prevent seepage along the sides of the specimen. Before testing, the specimen must be completely saturated with water as the presence of air will restrict the flow of water.Soil Testingwww.ele.com • email: ele@eleint.co.uk • tel: +44 (0)1525 249 20051Permeability25-060925-0605Falling Head Permeability CellProduct Code: 25-0605SpecificationsCell (mm)Plated seamless tube 100 dia x 130 heightBasePorous plate with three tie rodsTop PlateMachined to accept smaller tubesWeight (kg)3.4Spares/Consumables:Standpipe 1.5 mm (0345A0002)Standpipe 3.0 mm (0345A0003)Standpipe 5.0 mm (0345A0004)Standpipe PanelProduct Code: 25-0609Complete with three glass tubes of 1.5, 3 and 5 mm diameter bore, approximately 1.4 metres long. Supplied with metre scale and thick-walled flexible tubing. The glass tubes are fitted to a panel for wall mounting and connected to a 3-way outlet valve.De-Airing TankProduct Code: 25-0611Manufactured from transparent plastic with de-airing jet inlet and a flow outlet connection with flexible tubing. The tank is manufactured to withstand a reduced pressure and is suitable for direct wall mounting.SpecificationsWeight (kg)6Soaking TankProduct Code: 25-0613With fixed overflow. Used for containing permeability cell during test.SpecificationsWeight (kg)4Accessories:Measuring Cylinder 100 ml (82-0380)tel: +44 (0)1525 249 200 • email: ele@eleint.co.uk • www.ele.com52PermeabilitySoil TestingGuelph PermeameterThe Guelph Permeameter is used to obtain accurate measurements of hydraulic conductivity, soil sorptivity and soil matrix flux potential. These three factors govern how liquids will move through an unsaturated soil profile.Guelph Permeameter supplied complete with Extension KitProduct Code: 25-0650Product Standards:ASTM D5126Recent significant advances in both the theoretical and practical techniques of measuring soil hydraulic conductivity have been made by the University of Guelph, Canada. This has resulted in the development of the Guelph Permeameter, utilising the Constant Head Well principle. ±Lightweight and portable. ±Robust construction. ±Requires only 2.5 litres of water. ±Results usually within 2 hours.Further Information:Guelph Permeameter Set Includes:- ±1 Field Tripod. ±1 Well Auger. ±1 Well Tripod. ±1 Preparation Tool. ±1 Hand Pump. ±1 Extension Kit (extends depth by 800 mm). ±1 Collapsible Water Container. ±1 Set of Instructions and Carrying Case.1) Auger and prepare hole2) Install Permeameter and fill with water3) Record changing water level and calculate resultsSpecificationsCell (mm)Plated seamless tube 100 dia x 130 heightCapacity (ltrs)3.18 BasePorous plate with three tie rodsTop PlateMachined to accept smaller tubesOverall Weight (kg)111PermeameterHigh impact polycarbonate, molded elastomersAuger2 inches (50.8 mm) dia; machined steelCarrying CaseDie-cut foam for parts storageTest Time1/2 - 2 hoursTest Depth150 to 750 mm (0.5 to 2.5 ft)Hydraulic Conductivity Range10-4 to 10-8 m/sec (10-2 to 10-6 cm/sec)WeightNet 30 lbs (13.6 kg)Spares/Consumables:Permeameter Extension Kit (25-0655)Vacuum Hand Pump with Gauge (25-0650/10)Guelph Permeameter (25-0650/80)Soil Testingwww.ele.com • email: ele@eleint.co.uk • tel: +44 (0)1525 249 20053Soil Strength (Triaxial)Soil Strength (Triaxial)The measurement of total stress or effective stress requires different procedures and therefore different equipment.Total stresses are normally measured in a triaxial cell where the sample is subject to an all round confining pressure (σ³). A load is applied (σ1) through a piston onto a pressure pad, with the sample being confined within a rubber membrane so that no drainage in or out of the specimen is allowed. Pore water pressures are not normally measured and the undrained test is often referred to as the QU-TXL test.By comparison, effective stresses when measured in a triaxial cell are more complex in their nature, as numerous parameters can be measured. These include back pressure, pore water pressure and volume change; all of which can be used to calculate the required engineering properties.Effective stress tests are usually referred to as consolidated drained (CD) or consolidated undrained (CU). Generally the CD test is applicable to sands, while both the CU or CD test can be used with clays. There are many special test variations within these basic test groupings.Our range of triaxial cells and accessories, used in conjunction with other equipment such as load frames, pressure sources and measurement devices, have been specifically designed to meet the wide ranging requirements of modern soil mechanics laboratories. Each system is easy to set up and use, providing accurate and repeatable measurements.tel: +44 (0)1525 249 200 • email: ele@eleint.co.uk • www.ele.com54Soil Strength (Triaxial)Soil TestingTriaxial Requirement GuideTriaxial Sets Buyers Guide Please choose from the following:A)What type of test?Choose1Effective Stress CU/CDES2PermeabilityPE3Total Stress QU/UUTS4Unconfined CompressionUNCONFINEDB)What sample size?Choose138 mm38250 mm50370 mm704100 mm100C)What type of system?Choose1Manual – Dial GaugesMA2Automatic – Transducers, Data Logging and SoftwareAUD)What pressure system?Choose1Oil and WaterOW2PneumaticPNE)How many cells?Choose11 cell0122 cells0233 cells03There are various Triaxial tests that can be carried out ranging from the Total Stress to the more complex Effective Stress.We ask the following simple questions to determine accurately your requirements when you are looking for a full system.Once you determine your requirements from the questions on the right we can determine the exact set of equipment required.See below example sets for Triaxial requests created using the Triaxial Sets Buyers Guide Chart.Example SetsESPETSUNCONFINEDUNCONFINED3870100AUAUMAMAAUPNOWOW5070030101Soil Testingwww.ele.com • email: ele@eleint.co.uk • tel: +44 (0)1525 249 200Triaxial Load FramesThe range of ELE designed and manufactured load frames is the most modern of its kind available to the discerning test laboratory. The range comprises capacities of 50 kN incorporating the latest microprocessor control systems, clear on-board screen displays and a range of other high quality features.Digital Tritest 50 Load FrameProduct Code: 25-3518/01, 25-3518/02Product Standards:BS 1377-7, BS 1377-8, ASTM D2166/D2166M, ASTM D2850, ASTM D4767, ASTM D7181, AASHTO T208, AASHTO T296, AASHTO T297This 50 kN capacity machine, designed primarily for triaxial testing of soil specimens up to 100 mm diameter x 200 mm long, comprises a rigid twin column construction with an integral fully variable microprocessor controlled drive unit and LCD display with a touch sensitive keyboard. The machine is normally bench mounted for ease of installation and operation. The use of a microprocessor controlled drive system and keyboard entry provides the Digital Tritest 50 with a wide variety of features which include pause and speed reset during test, RS 232C, operator programming of speed and control functions, self test diagnostics and many other features. A robustly constructed steel case houses the motor drive system with careful attention being given to the prevention of ingress of water or grit. All operating controls are mounted on the front panel of the machine, which is angled and recessed to prevent physical and environmental damage.55Soil Strength (Triaxial) ±Microprocessor control. ±Large on-board LED screen display. ±Direct entry via a touch sensitive keyboard. ±Rapid approach and return to datum of platen. ±Fully variable speed, 0.00001 to 9.99999 mm/min. ±Samples up to 100 mm diameter.Further Information:Complete with RS 232C interface.SpecificationsCBR PenetrationYesUnconfined CompressionYesConsolidated UndrainedYesConsolidated DrainedYesCapacity50 kN (11,200 lbf)Speed RangeEnglish mode: 0.000001 to 0.399999 in/min. Metric mode: 0.00001 to 9.99999 mm/minRapid Approach Speed1.0 inch/min (25 mm/min)Platen Travel100 mm (3.9 inches); limit switch protectionPlaten dia133 mm (5.2 inches)Vertical Clearance910 mm (36.8 inches) max; 305 mm (12 inches) minHorizontal Clearance364 mm (15.3 inches)Serial InterfaceRS 232C; programmable baud rate and protocolOverall DimensionsW x D x H500 x 500 x 1470 mm (19.7 x 19.7 x 57.8 inches)Weight100 kg (220 lbs)Product CodePower Supply25-3518/01220-240 V AC, 50-60 Hz, 1 ph25-3518/02110-120 V AC, 50-60 Hz, 1 phAccessories:Adaptor Kit to perform CBR on the Tritest 50 load frame (25-3518/10)Frame and Drive Assembly (1884B0043)PCB Stepper Control and Spring (1884B0036)Tritest Motor Assembly (1884A0038)Tritest Input Filter (6012X0351)Tritest Transformer (6012X0351)Keyboard Assembly (1884B0032)LCD (1895A0063)Spares/Consumables:220 V Spares Kit (25-3518/K1)110 V Spares Kit (25-3518/K2)tel: +44 (0)1525 249 200 • email: ele@eleint.co.uk • www.ele.com56Soil Strength (Triaxial)Soil TestingMultiPlex 50 Load FrameProduct Code: 25-3700/01Product Standards:BS 1377-7, BS 1377-8, ASTM D2166/D2166M, ASTM D2850, ASTM D4767, ASTM D7181, AASHTO T208, AASHTO T296, AASHTO T297Compact bench mounting load frame designed for performing laboratory CBR, unconfined compression, Quick Undrained Triaxial and Marshall Stability Tests. Has a variable speed of 0.5 to 50.8 mm per minute and features rapid approach of platen. SpecificationsCBR PenetrationYesUnconfined CompressionYesConsolidated UndrainedNoConsolidated DrainedNoMarshall Stability and FlowYesDimensions L x W x H (mm)550 x 400 x 1470Max Vertical Clearance (mm)800Horizontal Clearance (mm)265Platen dia (mm)133Platen Travel (mm)100Platen Speed Range0.5 to 50.8 mm/minRapid Approach Speed40 mm/minPower Supply220-240 V AC, 50-60 Hz, 1 phWeight (kg)100 (shipping 113)Accessories For Unconfined Compression Test:Unconfined Compression Platens (25-3650)4.5 kN Clamped Boss Load Ring, complete with dial gauge and calibration certificate (78-0260)2-Part Split Mould - 100 mm (25-7655)2-Part Split Mould - 70 mm (25-6530)2-Part Split Mould - 50 mm (25-5530)2-Part Split Mould - 38 mm (25-5130)2-Way Split Former - 100 mm diameter (25-7650)2-Way Split Former - 70 mm diameter (25-6500)2-Way Split Former - 50 mm diameter (25-5500)2-Way Split Former - 38 mm diameter (25-5120)Spares/Consumables:Tacho Assembly (1895A0048)Belt (8447X0645)Micro PCB Assembly (1873PL0038)DC Drive 508 (6023X0025)DC Motor (6018A0054)Soil Testingwww.ele.com • email: ele@eleint.co.uk • tel: +44 (0)1525 249 20057Soil Strength (Triaxial)Triaxial CellsGrouped Product Standards:BS 1377-7, BS 1377-8, ASTM D2850, ASTM D4767, ASTM D7181, AASHTO T208, AASHTO T296, AASHTO T297This range of precision made triaxial cells has been designed to meet the requirements of the modern soils laboratory. The cells have been treated to minimise corrosion. Particular attention has been paid to the quality of finish between the piston and the head. Final assembly includes the fitting of an O-ring seal and the use of special lubricant to reduce friction to a minimum and eliminate water leakage. The piston load capacity is designed to accept high horizontal forces which may be present during the final stages of a test. Each cell has five take-off positions drilled in the base for top drainage/back pressure, pore water pressure and bottom drainage.Two no-volume change valves and an anvil for strain gauge/transducer datum are supplied for fitting to the cell. A feature of these cells is that they all accept a single diameter piston. The internal height is such that a range of submersible load transducers can be fitted without any modification. Each cell will accept a range of base adaptors and various accessories for testing a wide range of specimens. ±Working pressure up to 1700 kPa. ±All round visibility. ±Sample sizes 38 to 100 mm diameter. ±Rapid assembly and dismantling. ±Accepts a range of interchangeable submersible load transducers. ±Maximum piston load 45 kN.ProductCodeCell Size(mm)Weight(kg)Max SpecimenSize (mm)Vertical Clearance(mm)Horizontal Clearance(mm)25-415710014.3100 x 20051525525-4117707.370 x 14043018025-404750450 x 100380155Note: 38 mm samples are tested in the 50 mm cell.25-415725-411725-4047tel: +44 (0)1525 249 200 • email: ele@eleint.co.uk • www.ele.com58Soil Strength (Triaxial)Soil TestingAccessories for Triaxial CellsAggressive MaterialsAlthough all products are treated to inhibit corrosion, certain aggressive materials may attack the metal components. Examples of this are samples obtained from the seabed or containing high concentrations of sulphates or chlorides. Where aggressive materials are to be tested, ELE will be pleased to offer advice on any special requirements.Load MeasurementVarious methods of axial displacement and load can be supplied. All devices comply with the accuracy specified in BS 1377, ASTM D2850, D4767. All transducers are supplied with a calibration certificate.Product CodeTypeCapacity (kN)78-0260Load Ring4.578-0760Load Ring2878-0860Load Ring5027-1553S-Type Load Cell1027-1555S-Type Load Cell2527-1573Submersible Load Cell527-1575Submersible Load Cell1027-1551S-Type Load Cell527-1293Stainless Steel distance piece for use with submersible Load Cells-Triaxial Cell Specimen Base AdaptorsGrouped Product Standards:BS 1377-7, BS 1377-8, ASTM D2850, ASTM D4767, ASTM D7181, AASHTO T208, AASHTO T296, AASHTO T297Each cell will require the correct size of specimen base adaptor relative to the diameter of the sample tested. All base adaptors are double perforated for bottom drainage/pore pressure measurement. They are supplied complete with a solid disc for use in tests where no drainage is required.SpecificationsCell Model Product Code25-404725-411725-4157Specimen SizeMax Specimen Dia50 mm70 mm100 mm3825-4166--5025-416825-4174-70-25-4176-100--25-4186Piston Restraint Clamp for Triaxial CellsProduct Code: 25-4200Product Standards:BS 1377-7, BS 1377-8, ASTM D2850, ASTM D4767, ASTM D7181, AASHTO T208, AASHTO T296, AASHTO T297For ELE Triaxial Cells manufactured from July 1996.Holds the piston or submersible load cell away from the sample whilst loading and unloading the cell.SpecificationsWeight (lbs)1.07525-416825-417625-417425-416625-4186Soil Testingwww.ele.com • email: ele@eleint.co.uk • tel: +44 (0)1525 249 20059Soil Strength (Triaxial)Silicon Grease LubricantProduct Code: 25-8090Product Standards:BS 1377-7, BS 1377-8, ASTM D2850, ASTM D4767, ASTM D7181, AASHTO T208, AASHTO T296, AASHTO T297Silicon Grease Lubricant (Tube).Automatic Data Acquisition - TriaxialProduct CodeProduct27-2753 (DS7.2: 27-1753)DS7.3 Undrained Traxial Shear Strength Software27-2763(DS7.2: 27-1763)DS7.3 CU/CD Triaxial Shear Strength Software27-2768(DS7.2: 27-1768)DS7.3 Permeability in a Triaxial Cell SoftwareS2160(DS7.2: S1160)DS7.3 Full Software Suite - All Triaxial, CBR, Direct Shear, Consolidation27-1500/01GDU 8 Channel Data Acquisition Unit27-1505GDU 8 Channel Expansion CardFor full specification see page 72-77Axial DisplacementVarious methods of axial displacement and load can be supplied. All devices comply with the accuracy specified in BS 1377, ASTM D2850, D4767. All transducers are supplied with a calibration certificate.Axial Dial Gauge 25 mm Travel x 0.01 mm DivisionsProduct Code: 25-421025 mm travel x 0.01 mm divisions.SpecificationsDial Indicator25 mm rangeAxial Strain TransducerProduct Code: 27-1617Axial Strain Transducer Assembly 50 mm travel fitted with 5-pin DIN Plug.Next >