All the ingredients used for preparation of the concrete, are thoroughly tested for their quality and physical properties in a well equipped laboratory attached to the plant for conformity to relevant Indian Standard Codes.

The moisture probe determines the water content in the sand and aggregates. This accordingly helps in fixing the proportion of water to be added for the preparation of the mix.

The sand being used is passed through the mechanized sieving system, before feeding for mixing.

Trial mixes are carried out and tested to ensure that each and every batch of concrete coming out of the plant meets the parameters of client’s requirements.

The following tests are carried out at Neptune’s Laboratory

	FOR FINE AGGREGATE
	Sieve Analysis
	Specific Gravity
	Bulk Density (Loose / Rodded)
	Silt Test by Volume / Weight
	Water Absorption
	Sulphite / Chloride / Alkali Reactivity
	Organic Impurities

	FOR COARSE AGGREGATE
	Sieve Analysis
	Specific Gravity
	Aggregate Impact Value
	Bulk Density (Loose / Rodded)
	Water Absorption
	Flakiness Index
	Elongation Index
	Alkali Reactivity

	FOR WATER
	pH Value
	Chloride
	Sulphite
	Nitrite

	FOR FRESH CONCRETE
	Workability
	Air Entrained
	Bulk Density
	Temperature
	Setting Time

	FOR HARD CONCRETE
	Compressive Strength
	Flexure Strength

	FOR ADMIXTURE
	Air entrained
	Specific gravity

Use of high quality cement, compatible admixture and correct water cement ratio ensure dense and durable concrete.