Sri Ramakrishna Blue Metals

BEST QUALITY OF OUR PRODUCT RANGE

Quality is one thing that we do not compromise with at all. As manufacturers and suppliers of M-Sand, Blue Metals, Hollow & Concrete Blocks, Paver Blocks and Designer Tiles, we follow quality to its core with right selection of raw materials, periodic inspection of production process to ensure defect free finest materials.
Our strict adherence to the quality standards results in the best quality of our product range. We follow quality control measures required for each type of material to deliver products that accelerate the construction process and reduce the cost.
Our best team of Engineers help us provide superior grade products to our customers.

GRADING LIMITS FOR FINE AGGREGATES

To describe an aggregate by its maximum and minimum size is not sufficient. It has to be graded from its minimum to maximum size. IS-383 recommends the following grading limit for fine aggregates.

Sieve Size	Percentage of Passing For
Sieve Size	Grading Zone-I	Grading Zone-II	Grading Zone-III	Grading Zone-IV
10 mm	100	100	100	100
4.75 mm	90 – 100	90 – 100	90 – 100	95 – 100
2.36 mm	60 – 95	75 – 100	85 – 100	95 – 100
1.18 mm	30 – 70	55 – 90	75 – 100	90 – 1000
600 micron	15 – 34	35 – 59	60 – 79	80 – 100
300 micron	5 – 20	8 – 30	12 – 40	15 – 50
150 micron	0 – 10	0 – 10	0 – 10	0 – 15

IMPORTANT NOTES

Since the values for 600 micron size are not overlapping for different zones, it is used for confirming the zone of a sample of fine aggregate.
Zone-I represents the coarse sand and zone-IV represents the finer sand in all the four zones.
Fine aggregate belonging to zone-IV should not be used in RCC work unless tests have been made for suitability of mix proportion.

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BEST QUALITY OF OUR PRODUCT RANGE

GRADING LIMITS FOR FINE AGGREGATES

IMPORTANT NOTES