Leishangthem International

Shakarpur, Delhi

Buy precision-engineered and high in performance Magnetic Stirrer Without Hot Plate from us at market leading prices. We are one of the leading Manufacturers, Exporters and Suppliers of Marshall Stability Test Apparatus. Reckoned for its user-friendliness, smooth operation and reliability, our Marshall Stability Test Apparatus is among the best in the market. We provide it as per specifications given by customers. Our prices are reasonable and we offer discounts. 

More About Marshall Stability Test Apparatus : This apparatus is used for test, which is applicable to hot mix designs using bitumen and aggregates up to a maximum size of 25 mm. In this method, the resistance to plastic deformation of cylindrical specimen of bituminous mixture is measured when the same is loaded at periphery at 5 cm per min. This test procedure is used in designing and evaluating bituminous paving mixes. The test procedure is extensively used in routine test programs for paving jobs. There are two major features of the Marshall method of designing mixes namely, a) density – voids analysis b) Stability – flow tests. The Marshall stability of mix is defined as a maximum load carried by a compacted specimen at a standard test temperature of 60ºC. The flow value is deformation the Marshall Test specimen under goes during the loading up to the maximum load, 0.25 mm units. In this test and attempt is made to determine optimum binder content for the type of aggregate mix and traffic intensity.

Loading Frame :

• Capacity 50 KN (5000 kgf.) motorized, with two telescopic pillars and an adjustable cross head.
• Limit switches are fitted inside to control upward or downward movement of the pillars. On-off reversing switch and indicator lamps are on the front side while a hand wheel to manually move the pillars is on the right.
• Electrically operated having constant rate of strain 50.8mm/minute
• Suitable for operation on 220/230 Volts Single phase A.C. Supply

The apparatus consists of :

• Compaction Mould - Complete with Specimen mould 10.16cm I.D. x 7.6cm high with interchangeable collar and base plate duly chromium plated as per latest standard.
•  Sample Extractor - Used to extract sample from mould consists of a thrust plate and loading bar.
•  Compaction Pedestal - Consists of compaction rammer having 4.5 kg weight with a free fall of 457mm used with compaction pedestal comprises a wooden block capped with a steel plate and mould assembly
•  Breaking Head - Consists of upper and lower cylindrical segment of test head having inside radius of curvature 5cm.

 
Optional Accessories :

• Integral type Proving Ring capacity 3000 kgs.
• A dial gauge 0.01 x 25mm
• Universal Water Bath S.S. with false bottom and pyramid shaped lid to accommodate 3 Nos. Marshall specimen
• Thermometer 0 - 250^oC x 1^oC

The C.B.R. Method is used for finding the relative bearing ration and expansion characteristics of soil of base, sub base and sub grade for the design of roads, pavements and runways.

Standard: IS: 2720 (Part XVI)

Test can be made on all types of soils including sand, gravel, crushed stone etc. C.B.R. test is used extensively for selection of materials and control of sub-grades.

The procedure of test is very simple. A 50mm dia penetration piston is forced in the test soil and loads required for the penetration to penetrate different depth are recorded by means of a proving ring fixed to the penetration piston assembly and a dial gauge. Both Laboratory C.B.R. and field C.B.R. apparatus are available.

Available in manually operated or motorized control models. Motorized control model consists of load frame with 1.25 mm/min rate of strain and can be operated on 230V AC.

Standard: IS: 1205 - 1985, IP: 58/63

This apparatus is used to determine softening point of bitumen. Ring and ball apparatus is used to determine softening point. It is that temperature at which a sample of bituminous material loaded by a 9.5mm dia steel ball drops at a distance of 25mm.

Specifications:The apparatus consists of steel bracket with a sliding plate support. The support has two holes of 10mm dia on which a Ring and Ball guide can be kept. A central hole on this plate is for inserting thermometer. Supplied with a glass beaker approximate 8.5cm. I.D, 12cm high and a hand stirrer and 2 nos. 9.5mm dia steel balls.

Ring and Ball Apparatus (Electrical) - LISC-501B

Same asLISC-501Abut supplied with a thermostatic hot plate suitable for operation on 230 Volt A.C.

Soil Permeability Apparatusis used for the laboratory determination of permeability of soils using a constant or a variable head. This test is recommended for soils with coefficient of permeability in the range of10^-3to 10^-7cm/sec. The maximum particle size of the soil which can be tested in the mould is 10 mm.

Standard:IS: 2720 (Part XBII), ASTM D 2434.

The equipment comprises one each:

• Gun metal mould, 100 mm I.D x 127.3 mm high x 1000 ml volume.
• Extension collar, 100 mm dia x 60 mm high for the above mould.
• Drainage base plate with a recess for a porous stone and with an outlet valve.
• Metallic clamping ring.
• Drainage cap (Top plate with a recess for a porous stone and fitted with an inlet valve and an air release valve.)
• Dummy plate to serve as a false bottom during compaction.
• Porous stone for drainage cap.
• Porous stone for base plate.
• Set of Three glass stand pipes approximately 6 mm dia., 10 mm dia and 20 mm dia mounted on a wooden board. Each glass tube is longer than 1 meter and has a serrested end at the bottom.
• To read water head 2 Nos. meter scales are fixed between the tubes.
• A length of 3 meter long rubber tubing with pinch cock is also supplied.

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More about Direct Shear Apparatus : The Direct Shear Apparatus we offer is designed as per IS: 2720 (Part-VIII), ASTM D 3080 standards. Direct Shear Apparatus is extensively used for determining the Direct Shear Strength of Soils on specimen size 60mm x 60mm x 25mm. The Direct Shear Apparatus we manufacture is electrically operated to give a single constant rate of strain of 1.25mm/min and is suitable for 230v A.C. We Export and Supply Direct Shear Apparatus at economical prices.

Loading Unit :

• The loading unit is provided with V strips and roller strips for frictionless movement of shear box housing.
• Supplied with load yoke with direct and lever system for applying load.
• Normal stress capacity 8kg/sq.cm. load is applied either directly or through a counter balanced detachable lever.
• Provision is made for the load to be applied either through a steel ball recessed in the loading pad or direct through a boss on the pre collaborated loading yoke.

Shear Box Assembly : Comprises Direct Shear box in two halves for a square specimen size 60 x 60 x 25mm one pair of plain gripper plates, one pair of porous stones, one pair of perforated gripper plates, one top loading pad.

Shear Box Housing : It accommodates the Direct Shear Box assembly. Complete with two ball roller strips.

Specimen Cutter :

• Used for cutting 60 x 60 x 25mm specimen from larger samples
• Set of weights to give a normal stress of 3kg/sq.cm. through leverage as follows.

To give Kg/cm.sq. Qty. :

• 0.05 - 4 Nos.
• 0.1 - 1 No.
• 0.2 - 1 No.
• 0.5 - 3 Nos.
• 1.0 - 1 No.

Supplied With Essential Accessories :

• High sensitivity compression proving ring cap 200kg
• One consolidation dial gauge 0.01 mm x 25mm and one strain dial gauge 0.01mm x 25mm
• One strain dial gauge 0.01mm x 25mm.

Optional Accessories :

• Additional set of weights to give a normal stress of 5kg/cm2. Soil Sampler for 60mm x 60mm specimen and test forms pad of 50. (Extras)
• Porous stone for 60mm x 60mm size sample available in pairs. (Spares)