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Soil Testing Laboratory

Chloride Content:

The effect of chloride concentration in soil on corrosion of reinforcing steel was measured through corrosion potential and corrosion current density.

Concrete in contact with soil bearing high levels of chloride could suffer from early ingress of chloride, leading to corrosion of any embedded reinforcement. Measures of chloride levels in soils are often taken to check whether the soil will be suitable for being used adjacent to concrete.

Test Method: IS: 4032-1985 

Modified Proctor Compaction Test:

The Proctor compaction test is a laboratory method of experimentally determining the optimal moisture content at which a given soil type will become most dense and achieve its maximum dry density.

 Test Method: IS: 2720 (P-3,7)1980 

Linear Shrinkage Test:

This test is used to measure the percentage decrease in dimension of a fine fraction of a soil when it is dried after having been molded in a wet condition approximately at its liquid limit.

Test Method: IS: 2720 (P-6) 1972 

Organic Matter Content Test:

Organic matter is stable in the soil. They are exposed to decompose until they are resistant to further decomposition. Usually, only about 5 percent of it mineralizes yearly. That rate increases if moisture, oxygen, and temperature conditions become favorable for decomposition, which often appears with excessive tillage. In the Soil Test,  it is a stable organic matter that is analyzed.

 Test Method: IS: 2720 (P-22)1972 

Particle Size Distribution by Sieve Analysis:

The objective of this test is to determine the relative proportions of different granular sizes as they pass through a specific sieve size. Thus, the percentage of gravel, clay, silt, and sand can be extracted from the sieve analysis test.

 The sieve analysis (grain size analysis) is widely used in the classification of soils. The data obtained from grain size distribution curves is used in the design of filters of earth dams and to determine the suitability of the soil for road/highway construction, embankment fill of dam, airport runway/taxiway, etc.

 Test Method: IS: 2720 (P-4)1985 

Particle Size Distribution by Hydrometer Test:

Hydrometer test is the procedure generally adopted for determining the particle-size distribution in the soil for the fraction that is finer than sieve size 0.075 mm. The lower limit of the particle size determined by this procedure is about 0.001 mm.

Plasticity Index:

The Plasticity Index is simply the numerical difference between the liquid limit and the plastic limit for a particular material; it indicates the magnitude of the range of moisture content where the soil remains plastic. It is a measure of the cohesive qualities of the binder resulting from the clay content. Also, it gives some indication of the amount of swelling and shrinkage that will result in the wetting and drying of the fraction tested.

 Test Method: IS: 2720 (P-5)1985 

Sulfate Content:

This method determines the soluble sulfate content of soil by using turbidimetric techniques. The results are used to determine whether chemical stabilization (with lime, fly ash, cement kiln dust, etc.) of the tested soil is appropriate.

 Test Method: IS: 2720 (P-27)1977 


Load Bearing Capacity: This test helps in determining the maximum load the soil can withstand.

 Test Method: Shear Strength Testing: This test helps in determining the magnitude of the shear stress that a soil can sustain. The shear resistance of soil is an outcome of cementation, interlocking, and friction of particles.

 Test Method: ASTM D3080 Dynamic Core Penetration Test: This test helps in determining the compactness of the subsoil layer without making a borehole. The data obtained by the test provides a continuous record of soil resistance. This is an in-situ dynamic penetration test designed to provide information on the geotechnical engineering properties of soil.

 Test Method: BS EN ISO 22476-3 / ASTM D1586 / AS 1289.6.3.1 Triaxial Compression Test: This test helps in determining the shear testing of soils.

 Test Method: ASTM D4767 – 11 / D2850 Plate Bearing: In the design of a shallow foundation or traffic surface, design engineers need to know the bearing capacity of soil underneath. To serve this purpose, a plate bearing test is carried out in the field. Results from the test can be used to design parameters or confirm the design of the assumption.

 Test Method: BS 1377 Part 9: 1990 Standards.


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