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Ferrous & Non Ferrous Metals

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Home » Soil Testing

Soil Testing

Sigma analyses soil samples for pH, soil salts and nutrient levels in the soil for identifying its suitability for agriculture, presence of metals, organic matter, resistivity, crop nutrient requirements, fertilizer recommendations to get maximum productivity.

Soil Testing solutions offered help in testing overall health of the soil. Among many tests, one that is done includes testing of Chloride content. Here, the negative effect of chloride concentration as present in soil on corrosion of reinforcing steel was done through measuring corrosion potentials as well as corrosion current density in soil testing. In the situation pertaining to presence of concrete in contact with soil can lead to corrosion of embedded reinforcement. Further, chloride levels in soils are also undertaken for checking of soil adjacent to concrete is suitable. The test method employed is meets IS:4032-1985. Apart from this, other tests that are done for soil testing include:
Electrical Resistivity –
Test Method: IS:15736-2007
Linear Shrinkage –
Test Method: IS:2720 (P-6) 1972
Modified Procter Compaction Test
Test Method: IS:2720 (P-3,7)1980
Organic Matter Content –
Test Method: IS:2720 (P-22)1972
Particle Size Distribution by Sieve Analysis –
Test Method: IS:2720 (P-4)1985
Particle Size Distribution by Hydrometer –
Plasticity Index –
Test Method: IS:2720 (P-5)1985
Sulphate Content –
Test Method: IS:2720 (P-27)1977

Soil Testing-contamination
Soil Testing-contamination solutions offered find application as an important requirement in areas of land for retail, office, housing and industrial development. Here, real estate developers need to check soil constitution of the sites that were previously used for industrial applications. With possibility of these sites not having subjected to rigorous environmental legislation in application today, this can result in possibility of different levels of contamination present in soil. Hence, it is important for conducting contaminated land survey for these sites.
The testing services offered include:

Soil-geo Technical Investigation
Soil-geo Technical Investigation solutions offered comprises a wide range of tests that are performed for testing soil geo-technical parameters. Some of the tests that are carried out include –
Load Bearing Capacity –
Shear Strength –
Test Method: ASTM D3080
Dynamic Core Penetration Test –
Test Method: BS EN ISO 22476-3 / ASTM D1586 / AS 1289.6.3.1.
Triaxial Compression Test –
Test Method: ASTM D4767 – 11 / D2850
Plate Bearing –
Test Method: BS 1377 Part 9 : 1990 Standards.

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