Soil Testing Instruments

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A sieve analysis (or gradation test) is a practice or procedure used (commonly used in civil engineering or sedimentology) to assess the particle size distribution (also called gradation) of a granular material. Sieve sizes used in combinations of four to eight sieves.

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Core Cutter Method of Field Density test is conducted in the field to know whether the specified compaction is achieved or not.

In certain cases, it is necessary to determine the density of soil either as it exists naturally in the ground or as it may be compacted in the fill.

In the former case, this density of soil in place may be used to estimate the comparative strength of the soil.

In the latter case, it may be used to document the results of field compaction to meet contract specifications.

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• Production Capacity: Ready Stock

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Sand Replacement apparatus is used in field density test consists of a sand pouring cylinder, with pouring cone at its base.

There is a shutter between the cylinder and the cone. The cylinder is first calibrated to determine the unit Weight of sand.

For good results, the sand used should be uniform, dry and clean passing a 1.0 mm sieve and retained on a 600-micron sieve.

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• Delivery Time: Ready Stock

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Rapid moisture meter method is a quick method for determining the water content of a soil sample. This method is performed by an equipment called Rapid moisture meter. It is a suitcase type portable equipment and can be conveniently used in the field.

 

The equipment box consists of a balance, calcium carbide bottle, a scoop, few steel balls and a metallic bottle type vessel which has a sealing cup to make it air tight and this vessel is fitted with a pressure gauge which is calibrated to produce gas pressure in the percentage of amount of water present in the total weight of soil.

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• Delivery Time: Ready Stock
• Packaging Details: One Complete Box includes:- 1. Weighing balance for sample weight. 2. Carbide box. 3. Metal Balls. 4. Wire Brush for Cleaning.

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Liquid limit devices (Casagrande) Used to determine the moisture content at which clay soils pass from a plastic to a liquid state.It consists of a brass dish, handle, and cam mounted on a hard rubber base. The dish falls through a distance of 1 cm per rotation.The liquid limit of a soil is the water content at which the soil behaves practically like a liquid but has a small shear strength.

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A hot air oven is electrical operated equipment, used to dry heat sterilize samples at temperature between 50°C to 300°C. It is ideal for materials that are not heat sensitive and remain unaffected at high temperature, such as glassware, forceps, needles and powders etc. A hot air oven is constructed with double walled metallic cabinet insulated with ceramic fiber. For keeping samples, there are 2 or more trays are fitted inside. In order to letting out moisture during operation, a single hole or vent is provided in the oven.

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The Californian Bearing Ratio (CBR) test is a penetration test used to evaluate the subgrade strength of roads and pavements. The results of these tests are used with the curves to determine the thickness of pavement and its component layers. This is the most widely used method for the design of flexible pavement

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