Aggregate Testing Laboratory in Delhi, India
Advance Inspection & Testing Lab is one of the top-ranked laboratories providing reliable and accurate test results. Our Aggregate testing laboratory has the availability of sophisticated and modern analytical instruments calibrated at regular intervals. But the most important strength of our testing lab lies in its pool of technical workforce.
The testing activities include physical testing of aggregate and chemical testing of aggregate. Advance Lab also undertakes on-field testing services, engineering and NDT inspections, besides providing consultation services and lab set up.
Types of Aggregate Testing
Fine Aggregate Testing
The other type of aggregates testing are those particles passing through IS Sieve 4.75 and predominantly retained on the 75 µm sieve are called fine aggregate. For increased workability and economy, as reflected by less cement, the fine aggregate should have a rounded shape. The purpose of the fine aggregate is to fill the voids in the coarse aggregate and act as a workability agent.
Coarse Aggregate Testing
Coarse-grained aggregates testing will not pass through IS Sieve 4.75 mm. Those particles that are predominantly retained on the 4.75 mm sieve are called coarse aggregate. The coarser the aggregate, the more economical the mix. Larger pieces offer less surface area of the particles than an equivalent volume of small pieces. The use of the largest permissible maximum size of coarse aggregate permits a reduction in cement and water requirements.
Using aggregates larger than the maximum size of coarse aggregates permitted can interlock and form arches or obstructions within a concrete form. That allows the area below to avoid, or at best, to become filled with finer particles of sand and cement only and results in a weakened area.
For Coarse Aggregates in Roads Following Properties Are Desirable:
- Shape of aggregates
- Adhesion with bitumen
Tests Are Conducted For the Following Parameters:
Sieve Analysis, Impact Value, Soundness, Crushing Value, Los-Angle Abrasion, Fineness modulus, Bulk density, Water Absorption, Silt content, Specific Gravity, Deleterious Materials, 10% Fine Value, FlakinessS& Elongation Index, Alkali Reactivity, Organic Impurities.
Standards Followed: IS: 383-1970, IS: 2386, MORTH, CPWD Books
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