Chemical Analysis Testing

Chloride:

Chloride content is measured to assess the risk of corrosion in steel reinforcement within concrete. Excess chlorides can accelerate rusting.
Test Method: IS: 14959 (Part 2) - 2001

Loss On Ignition (LOI):

This test measures the weight loss of a sample upon heating, indicating the presence of volatile substances like moisture, carbonates, and organics.
Test Method: IS: 1760 (Part 3) - 1991

Silica (SiO₂):

Silica content is determined to evaluate the composition and suitability of materials like cement and fly ash. It contributes to long-term strength.
Test Method: IS: 4032 - 1985

Insolubility:

This test determines the percentage of material that does not dissolve in acid, indicating the purity and quality of substances like lime and cement.
Test Method: IS: 6932 (Part 4) - 1973

Aluminium Oxide + Iron Oxide (Al₂O₃ + Fe₂O₃):

This combined test indicates the presence of key oxides in cementitious materials, affecting setting time, strength, and color.
Test Method: IS: 4032 - 1985

Iron Oxide (Fe₂O₃):

Iron oxide content helps assess cement and raw material composition. It influences color and contributes to the formation of tricalcium aluminate.
Test Method: IS: 4032 - 1985

Lime (CaO):

Lime content determines the active calcium present in materials like cement, lime, and fly ash. It affects setting and strength gain.
Test Method: IS: 6932 (Part 5) - 1973

Magnesium Oxide (MgO):

Magnesium oxide content is measured because excessive MgO can cause unsoundness in cement and concrete.
Test Method: IS: 4032 - 1985

pH:

pH measures the alkalinity or acidity of a material or solution. A high pH is typical in cement-based materials and affects corrosion potential.
Test Method: IS: 3025 (Part 11) - 1983

Total Dissolved Solids (TDS):

TDS is used to assess water quality. High TDS in mixing water can negatively impact concrete strength and durability.
Test Method: IS: 3025 (Part 16) - 1984

Density:

Density is the mass per unit volume of a substance. In chemical analysis, it helps characterize materials and check purity or concentration.
Test Method: IS: 2720 (Part 3/Section 2) - 1980 (for soils) or as per standard chemical analysis practices