LABORATORY TESTING

The testing laboratory of Geotechnical Services is staffed by a team of qualified, trained and experienced soil engineers and technicians. The laboratory has the necessary facilities for conducting tests on soils, cement, concrete, aggregates and water.

It may be mentioned that the testing laboratory is being expanded to incorporate facilities for other tests.

Following are the tests which are successfully carried out by Geotechnical Services in accordance with Inteational Standards

Soil
> Bulk Density
> Modified AASHTO Compaction
> Califoia Bearing Ratio
> Dry Density
> Specific Gravity
> One?Dimensional Consolidation
> Sieve Analysis
> Free Swell Potential
> Gradation Analysis with Hydrometer
> Constant Volume Swell Pressure
> Atterberg Limits
> Unconfined Compression
> Shrinkage Limit
> Direct Shear
> Field Density
> Permeability
> Minimum Laboratory Density
> Organic Matter
> Maximum Density
> Sulphate Content
> Relative Density
> pH Value
> Standard Proctor Compaction
> Carbonate Content
> Confined Compression
> Total Soluble Salts

Ground Water is tested chemically in the laboratory to measure the possibility whether the water has any harmful compounds that might affect the foundation of the structure. Hence following tests are performed to ensure that preventive measures are adopted to protect the RCC foundations.

> Sulphate Content
> pH Value
> Total Dissolve Solids (TDS)
> Total Soluble Salts (TSS)
> Carbonate Content
> Chloride Content

Following tests are conducted on aggregates for base and sub-base of pavements:

Gradation Analysis
· Apparent Specific Gravity
· Asphalt Extraction
· Aggregate Water Absorption
· Marshall Test
· Crushing Value
· Impact Value
· Methylene Blue
· Sulphate Soundness
· Los Angeles Abrasion

Following tests are performed on asphalt/paving mixtures:
· Bitumen Extraction
· Marshal Stability & Flow
· Coating & Stripping
· Specific Gravity of Core
· Extraction of Core