SPECIFICATION FOR BURNT CLAY HOLLOW BRICKS USED FOR WALLS AND PARTITIONS

Reference IS 3952-1988 – Specification for burnt clay hollow bricks for walls and partitions. General Quality o    Bricks shall be free from cracks and flaws and nodules of free lime. o    Bricks shall have smooth rectangular faces with sharp corners o    Bricks shall be of uniform in colour and texture. o    Bricks shall be free … Read more

WATER ABSORPTION TEST OF BURNT CLAY HOLLOW BRICKS

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

HOW TO DETERMINE CONSISTENCY OF MASONRY MORTAR?

Objective To determine the consistency of masonry mortar Apparatus Standard Cone Apparatus having following parts and dimensions Penetrating Cone Conical Container Weight = 300 g,Height = 150 mm, Base dia = 75 mm Top dia=150 mm,Height = 180 mm  Tamping Rod Procedure Fill the conical container with the mortar to a level that is 1 … Read more

WHEN TO USE WHAT GRADE OF MASONRY MORTAR?

From durability point of view, the grade of masonry mortar to be used for a given work is primarily dependent upon the following two factors. Loading condition Exposure condition Considering the above two factors the suitable grade of masonry mortar to be used for different works is given in the following table. Generally cement mortar … Read more

WHAT ARE THE DIFFERENT GRADES OF CEMENT MORTAR AND THEIR PROPERTIONS?

Masonry mortars are specified as different grades depending upon their minimum compressive strength, when tested at an age of 28 days. Different grades of cement mortar and their mix proportions are given below. Different Grades of Cement Mortar Grade Name Mortar Mix (by Loose Volume) Compressive Strength at 28 days (in N/mm2) Cement Sand MM … Read more

WHAT IS THE GRADING REQUIREMENT OF SAND FOR USE IN MASONRY MORTAR?

The sand which is used in mortar can be natural sand, or crushed stone sand or crushed gravel sand. Sand or fine aggregate which is used in concrete is somewhat different from sand which is used for masonry mortar. The role of sand in mortar is to give the following properties such as Strength Workability … Read more

FINENESS MODULUS OF AGGREGATE – WHAT, WHY & HOW

Fineness Modulus of Sand

What is Fineness Modulus of Aggregate? Fineness modulus is an empirical factor obtained by adding the cumulative percentages of aggregate retained on each of the standard sieves ranging from 80 mm to 150 micron and dividing this sum by 100. Why to Determine Fineness Modulus? Fineness modulus is generally used to get an idea of … Read more