Bricks in the construction site are the oldest and manmade product in building construction which mainly made by using clay so we have to perform some important tests on bricks to know the quality of bricks and sufficient for construction or not so in this article we learn about those tests in detail
According to use, different types of bricks are carried out for masonry work like mud bricks, refractory bricks, silica bricks, cement, fire etc so a test on brick is required because it's manmade and also various types of material used in different types. Now basic question triggers in mind how many types of brick tests, Right?
Types of Tests on Brick
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List of Types of Tests Required for Brick
For the best suitability types of bricks for construction work, we have to perform the following List of Types of Tests Required for bricks
 Brick Water Absorption Test
 Brick Compressive Strength Test (Crushing Strength Test)
 Brick Efflorescence Test
 Brick Dimensions Tolerance Test
 Hardness Test
 Size, Shape and Colour Test
 Warpage Test
 Soundness Test
 Structure Test
 Impact Test
How many bricks are needed for the brick test?
For testing bricks are taken randomly about 20, 32 & 50 noâ€™s from a stack of (2k10k), (10k35k), and (35k50k) bricks respectively where k = one thousand
It lot contains lass then or equal to 2000 bricks, the no of sampling shall be subjected to agreement between the purchaser & supplier
Brick Water Absorption Test
Tests on bricks as per IS code (brick water absorption test is code) is 10771992 is available for guidance for the water absorption test of bricks procedure
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Objective Brick Water Absorption Test
This test is performed to know the water absorption of brick
A water absorption test is a laboratory test of bricks
Absorption of firstclass bricks should not exceed 20% of the weight of dry brick
Apparatus Required for Water absorption test
 Bricks
 Ventilated Oven
 Weighing balance
 Water
Steps Procedure for water absorption test
 Take 5 nos of bricks randomly
 Make it dry in a ventilated oven at 110Â°C + 5Â°C temperature for a period of 48 hours or more
 Note down the weight of bricks separately after cooling
 Afternote down weight immersed brick into the water at the normal room temperature for the period of 24 hours
 Then take out brick after 24 hours make it dry and Quickly note down weight one by one within 3 minit
 Not calculate absorption value by the simple formula
 The water absorption in % = (weight of water absorbed/weight of brick before the test)*100

Absorption % = (W2W1/W1) * 100
 Where W1 is dry weight, W2 is the weight after immersion of brick for 24 hours
 Now carried out the average value of Absorption % all 5 brick. We take the average value for security/safety
Water Absorption Test 
Brick Compressive Strength Test
Objective for Compressive Strength Test of Brick
A comprehensive strength test of brick is performed to know the compressive strength of brick
IS code follows to perform Compressive Strength Test is 10771992 is available for guidance for Compressive strength of brick test IS code
Its also known as the “crushing test” of brick
Compressive strength test of brick is a laboratory test of bricks
The Minimum required crushing strength of bricks should be near 105kg/cm2
Apparatus Required for Compressive strength (Co)
 Bricks
 Compressive testing machine
 Cement, sand and water for mortar
Step in Compressive Strength of brick test procedure
 Take 5 nos of bricks randomly
 Put it into the water for 24 hours at normal room temperature
 Take it out from the water after 24 hours and remove the water contents naturally after that clean the brick surface water
 After drying fill out brick frogs by using a standard mortar ratio of 1:1 (1 part cement and 1 part sand)
 Leave it for 24 hours in under moisture environment by using gunny or damp sanks to the setting of mortar
 Now time for curing brick for 7 days so that mortar gain their strength and became harden
 Take out a brick from the water after 7 days and allow the water to drain and make it dry after dry time for a compressive strength test
 Place the brick between the plate of the compressive testing machine flatwise keep in mind that the frog of brick facing upward
 The applied load axially at a uniform rate of 14 N/mm2/minit is still a failure of brick
 Note the Load (P) at which brick break or fail
 Compressive/Crushing strength (Co) = [Maximun load at failure(p)/Area of the bed face of brick(A)]
 Test all 5 bricks and carried out arithmetic mean value of compressive strength
 Classification of bricks carried out with the help of Co (compressive strength)
Classification of bricks according to compressive strength
Class of Bricks 
Compressive strength 
Firstclass brick 
105 kg/cm2 
Second class brick 
70 kg/cm2 
Third class brick or common brick 
35 kg/cm2 
Fourth class brick or sundried brick 
15 to 25 kg/cm2 
Efflorescence Test for Brick
What is efflorescence in brick? This question irritates you Right? but now no more because you read Civil Experience article where we provide each and every detail so, after this, you don't have to go any other site to find an answer related to Brick Test.
Objective of Efflorescence Test for Brick
An efflorescence test of the brick procedure is performed to know the presence of any alkaline matter in the brick
Efflorescence test of brick IS code: 10771970 is available for guidance for the efflorescence of bricks test
The compressive strength test is a laboratory test on bricks or a field test on bricks
Steps Procedure for Efflorescence test
 Take 5 nos of bricks randomly
 Bricks are kept in a 150mm dish, containing 25mm depth of distilled water till the entire water is absorbed or evaporated or 24 hours
 The water was again filled by 25 mm if more water evaporated
 Keep the dishes used for the test at a warm room temperature of 18Â°C to 30Â°C which allows proper ventilation
 Take out and allowed it to dry at the end check the brick for efflorescence which is identified by seeing white particles of solt on the surface of the bricks
Classification of bricks according to the percentage of effloresce area
Classification 
% of Efflorescence 
Nil 
No visual deposit 
Slight 
< 10% 
Moderate 
1050% 
Heavy 
>50% 
Serious 
Heavy & powdered 
Check your specification for allowable efflorescence like in heavy brickwork, it must require nil efflorescence and also for firstclass bricks
Brick Dimension Tolerance Test
Objective of Brick Dimension Tolerance Test
A dimensional tolerance test of bricks is performed to know whether the bricks have the required dimension or not
IS code: 10771970/1992 is available for guidance for dimension test of clay bricks in such a way so that
Steps Procedure for dimension test of brick
 Take 20 nos of bricks randomly
 Make brick clean by removing loose particles of clay materials and projecting cysts etc from the surface of the brick
 Place the brick on the level smooth surface in series so that surfaces of the bricks are connected with each other
 Bricks arrangement done in line with a dimension which is checked
Hardness Test
How to hardness test proform to check the quality of brick? read below part of
Steps Procedure for how is the hardness of brick tested
 Take 20 nos of bricks randomly
 In this test, an attempt is made on the surface of the bricks to make a with the help of a fingernail or any sharp tool
 Then observed the brick closely
 If you have not found any sign of impression on the brick surface means the brick is hard enough
Size, Shape and Colour Test
Shape and Size Test
Shape and size test of brick perform on anywhere on a field test of brick or laboratory test of bricks
 Take 20 nos of bricks randomly
 Stacked bricks lengthwise along with the height and width
 For best bricks results must be within the following permissible limits
Length 
3680 mm to 3920 mm 
Width 
1740 mm to 1860 mm 
Height 
1740 mm to 1860 mm 
Colour Test
Warpage test
Soundness Test
Steps Procedure for Soundness test
 Take two random bricks
 Then struck them with each other
 If brick produce well metallic sound then tested brick quality is good
Structure Test
Steps Procedure for Structure test
 Eliminated broken brick and then inspect other bricks
 Its structure should be homogeneous materials well compacted
 Then check it is free from any imperfections or not like lumps or holes etc
Impact Test
Steps Procedure for impact test
 Take the bricks
 Drop if freely from a 1meter height on a hard surface
 Inspect the dropped brick for any damage that has occurred or not
 If the bricks broke or crack it means that the brickâ€™s impact value is lower so reject those brick
FAQ 1: List of Types of Tests Required for Brick
1. Brick Water Absorption Test,2. Brick Compressive Strength Test (Crushing Strength Test),3. Brick Efflorescence Test,4. Brick Dimensions Tolerance Test,5. Hardness Test,6. Size, Shape and Colour Test,7. Warpage Test,8. Soundness Test,9. Structure Test,10. Impact Test.
FAQ 2: Brick Water Absorption Test
Objective Brick Water Absorption TestThis test is performed to know the water absorption of breakwater absorption test is a laboratory test of brisk absorption of firstclass bricks should not exceed 20% of the weight of dry brick
FAQ 3: Brick Compressive Strength Test
A comprehensive strength test of brick is performed to know the compressive strength of brick IS code follows to perform Compressive Strength Test is 10771992 is available for guidance for Compressive strength of brick test IS code Its also known as the “crushing test” of brick Compressive strength test of brick is a laboratory test of bricksThe Minimum required crushing strength of bricks should be near 105kg/cm2Apparatus Required for Compressive strength (Co) Bricks, Compressive testing machine, Cement, sand and water for mortar.
FAQ 4: Efflorescence Test for Brick
What is efflorescence in brick? This question irritates you Right? but now no more because you read Civil Experience article where we provide each and every detail so, after this, you don't have to go any other site to find an answer related to Brick Test. The objective of the Efflorescence Test for BrickEfflorescence test of the brick procedure is performed to know the presence of any alkaline matter in the brickEfflorescence test of brick IS code: 10771970 is available for guidance for the efflorescence of bricks test The compressive strength test is a laboratory test on bricks or a field tests on bricks
FAQ 5: How to hardness test proform to check the quality of brick?
Steps Procedure for how is the hardness of brick tested…1. Take 20 nos of bricks randomly2. In this test, an attempt is made on the surface of the bricks to make a with the help of a fingernail or any sharp tool3. Then observed the brick closely4. If you have not found any sign of impression on the brick surface means brick is hard enough