Difference between Red bricks and Solid Concrete Block

Red bricks are one of the oldest and extensively used building material that is primarily made from clay. Solid concrete blocks, on the other hand, are precast concrete blocks manufactured from cement and fine aggregates.

Sr. No.	Parameters	Red Bricks	Solid Concrete Blocks
1	Raw Material	LimeClay or Alumina, Sand, Iron Oxide, Magnesia are used in red brick.	Ordinary Portland Cement, Sand, Gravel, Water, fly ash are used in Solid Concrete blocks.
2	Properties	Red bricks are available in modular sizes of 190 x 90 x 90mm and 190 x 90 x 40mm. And also, in Non-modular sizes of 230 x 110 x 70 mm and 230 x 110 x 30mm.	Standard sizes of solid concrete blocks are of length 400, 500 or 600 mm and height of 200, 100mm and the width from 50, 75, 100, 150, 200, 250 or 300 mm. The dimension differs from manufacturer to manufacturer.
3	Compressive Strength	Common bricks have compressive strength of 3.5 N/mm2. It varies from one class to another.	Solid Concrete blocks have compressive strength of 4 to 5 N/mm2. It is based on grade of Concrete.
4	Dry Density	It depends on class of bricks. It ranges between 1500-1800 kg/m3.	It depends on the grade of concrete. It ranges between 1800-2100 kg/m3.
5	Water Absorption	It should be less than 20-25% of its weight.	It should not be greater than 10% of its weight.
6	Environmental Impact	Amount of carbon dioxide emits during its manufacturing is more.	Amount carbon dioxide emits during its manufacturing is less.
7	Mortar Consumption	It has a rough and irregular surface hence mortar consumption is more.	It has flat and smooth surface hence mortar consumption is less.
8	Water Usage	Curing require more water.	In Concrete block 7 to 14 days curing is required therefore high amount of water required.
9	Cost	Red bricks are cheap but overall cost for brick construction is high as more mortar required and cost of construction is high.	As an individual piece it is costly but in overall construction less blocks require as compared to bricks.
10	Uses	It is used in the construction of buildings, foundations, arches, pavement, bridges, landscaping etc.	It is used in retaining walls, piers, chimneys, fire places and garden walls, Partition walls, panel walls etc.

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Blog written by
ShrutiDoshi
shruti.doshi@sanghicement.com

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