Our Services

NSS Engineers & Geotechnical Services

Laboratory
Testing

Laboratory Testing


We feature in-house capabilities to provide laboratory testing of soil, rock, concrete, coarse & fine aggregates, mortar, bricks, tiles etc. We follow current BIS test procedures for tests conducted by our firm, and stay abreast of changes in methods along with new procedures through our membership in the Bureau of Indian Standards (BIS). For tests not covered by BIS, International Standards are followed. Laboratory test results are issued in concise computer generated formats and graphics with supplemental data acquisition reports available upon request. Our in-house laboratory testing capabilities are summarized as follows:

SOIL:-    

  •     Gradation Analysis
  •     Grain Size Distribution
  •     Atterberg Limits
  •     Unconfined Compressive Strength
  •     Direct Shear Test
  •     Triaxial Shear Test
  •     Consolidation
  •     Permeability
  •     Density and Specific gravity
  •     Relative Density
  •     CBR
  •     Proctor Compaction
  •     Determination of Total Soluble Solids, Organic Matter, Calcium Carbonate, Cation Exchange Capacity, pH Value and Total Soluble Sulphates
  •     Characterization of Expansive, Soft, Sensitive & Dispersive Soils

Intact Rock & Rock Joints

Intact Rock

Rock Joints

  • Uniaxial Compressive Strength
  • Modulus of Elasticity and Poisson’s Ratio
  • Triaxial Compression Test
  • Tensile Strength - Direct & Indirect (Brazilian Method)
  • Flexural Strength
  • Point Load Strength Index
  • Hardness
  • Slake Durability Test
  • Swelling Index Test
  • Direct Shear Test
  • Permeability
  • Petro graphic Examination
  • Index Properties

CONCRETE TECHNOLOGY

COARSE AGGREGATE

  • Specific Gravity
  • Water Absorption
  • Gradation
  • Gradation
  • Aggregate Abrasion Value
  • Soundness
  • Petrographic Examination
  • Crushing Strength
  • Alkali – Aggregate Reactivity
  • Chemical MethodMortar Bar Method
  • Accelerated Method
  • Flakiness Index
  • Elongation Index
  • Elongation Index
  • (coal & lignite, clay lumps, material finer than 75 micron IS sieve , soft fragments & shale) 

FINE AGGREGATE

  • Specific Gravity
  • Water Absorption
  • Gradation & Fineness Modulus
  • Material finer than 75 micron IS sieve
  • Bulking
  • Soundness
  • Mortar Making Properties
  • Organic Impurities
  • Petrographic Examination
  • Mica Content
  • Alkali Aggregate Reactivity
  • Chemical Method
  • Mortar Bar Method
  • Accelerated Method

MIXING & CURING WATER

  • PH Value
  • Volume of 0.02 normal NaOH to neutralize 100ml sample of water, using phenolphthalein
  • Volume of 0.02 normal H2So4  to neutralize 100 ml sample of water using mixed indicator
  • 28 days compressive strength of concrete cubes with water against distilled water
  • Initial setting time of cement & water against that of cement & distilled water
  • Organic impurities
  • Inorganic impurities
  • Sulphates ( as SO3)
  • Chlorides (as Cl )
  • Suspended matter

FILTER MATERIAL

  •  Water Absorption
  • Aggregate Abrasion Value
  • Aggregate Impact Value
  • Initial Void Ratio
  • Coefficient of Compressibility
  • Coefficient of Uniformity
  • Breakage Factor
  • Coefficient of Permeability
  • Density
  • Shear Parameter

STEEL REINFORCEMENT

  • Chemical Composition(Carbon, Sulphur,Phosphorus, Sulphur&Phosphorus)
  • Nominal mass per meter
  • 0.2 percent proof stress
  • yield stress
  • Percentage elongation
  • Tensile strength
  • Bond strength
  • Rebound test

BRICKS

  • Dimensions
  • Water Absorption
  • Compressive strength
  • Efflorescence
  • Warpage

Tiles

  • Dimensions
  • Flexural Strength
  • Abrasion Resistance


NSS Engineers & Geotechnical Services

ISO 9001-2008 Certified Company.
© 2016 NSS Engineers
Developed by: BSS   &   PCSIT

Corporate Office:

301, first floor,Vivekanand Nagar,
Ghaziabad (Uttar Pradesh) - 201002
India

+91 9717437196, 8171729011 & 7838274110

nssgeotechnical@gmail.com
narendark68@gmail.com