What is Efflorescence? The term ‘efflorescence’ is used to describe the depositing of soluble salts (in other words, those that dissolve in water) on the surface of finished brickwork. Salts of magnesium, calcium, potassium or sodium may have been present in the clay used to make the bricks or in the sand used to make … Read more
Quality Requirement of Fly Ash Bricks 1. General Quality Bricks shall be free from cracks and flaws and nodules of free lime. Bricks shall have smooth rectangular faces with sharp corners Bricks shall be uniform in colour The proportion of soil and fly ash shall be as per IS-2117-1991. Fly ash used to manufacture of … Read more
REFERENCE IS-3952-1988-Specification for the burnt clay hollow bricks used for walls and partition Objective To determine the water absorption of burnt clay hollow bricks used for walls and partitions. Equipment Name Capacity Balance Sensitive to 0.1% of mass of specimen Oven 110 to 1150C Procedure Dry the specimen in an oven maintained at a … Read more
Field Tests on Bricks It is necessary to check the quality of brick before using it in any construction activities.There are some field tests that we can conduct in the field in order to check the quality of bricks. These tests are as follows. Water Absorption Visual inspection Efflorescence Dimension Hardness Soundness Structure 1. Water … Read more
In my previous post, I discussed the constituents of good brick earth and their importance. But it is impractical to find brick earth having all the good constituents with the desired proportions. There also exist some harmful ingredients in brick earth, which can cause many defects in the manufactured bricks. Below mentioned are some of … Read more
Objective For determination of bulk density of bricks Equipment & Apparatus Oven (3000C) Scale Balance (0-10kg) Procedure The brick is dried in a ventilated oven at a temperature of 1050 to 1150C till it attains substantially constant mass. The brick is then cooled to room temperature and its mass is recorded.(M) Then the dimensions of … Read more
Objective For determination of compressive strength of bricks Reference Standard IS: 3495 – P (1)-1992-Methods of tests of burnt clay building bricks (Determination of compressive strength) Equipment & Apparatus Compression Testing Machine Scale for measuring dimension of brick Procedure Unevenness observed in the bed faces of bricks is removed to provide two smooth and parallel … Read more
Objective For determination of efflorescence of bricks Reference Standards IS: 3495 – Part(3)-1992 Equipment & Apparatus Oven (3000c) Procedure A shallow flat bottom dish containing sufficient distilled water to completely saturate the specimens is used for the test. The ends of the bricks are placed in the dish, the depth of immersion in water being … Read more
Objective For determination of water absorption of bricks Reference Standards IS : 3495 (Part-2)-1992,RA 2011 Equipment & Apparatus Balance (0-10 kg) Procedure The specimen is dried in a ventilated oven at a temperature of 105 to 1150C; till it attains substantially constant mass. The specimen is cooled to room temperature and its weight is recorded … Read more