brick making

Get To Know About The Full Structure Of Bricks

Brick mold

Bricks are used as building material for pavements and construction of houses. In India, the brick mold were used only for building to fit bricks to make houses in rural India, but now with the modern architecture bricks are also used to create pathways these days in India.

It is clay that helps in the brick making in the old days, but now there are bricks made of concrete, metal and many other materials. Soon the material became a decorative item rather being used only for sidewalks.

Brick making in Uganda is an art practised for a long time. The use of bricks in Uganda can be easily found as it was a rural area once bricks like fire brick, half bricks and quarry tiles are most of the bricks uses in Uganda. There were times when bricks were cheap when bricks were the only type of floor tiles and wall tiles we had in our house.

Bricks are used by most construction industry as it the most durable and affordable material, different types of bricks offer you with different types of benefits, used for different purpose and according to the job.

Types of Bricks-

  • Common Burnt clay Bricks


    Pressing molds helps to create common burnt clay bricks. Dried and then burned in a kiln. These are the most found common bricks, they are mostly used for building and are not the type of bricks that you would use for decoration.
     

  • Sand-lime Bricks


    Sand mixing with fly ash and lime with a chemical process helps you create a sand-lime bricks. Later the mix is shaped into a brick which is used for construction compared to clay bricks having a grey colour compared to the usual red, no plastering is required as their shape is the same and it also offers a better durability has also established itself a strong hold brick.
     

    rubber paver moulds

  • Engineering Bricks


    Manufactured in very high temperature, unlike other bricks. These engineering bricks offer you durable bricks that provide you services like water absorption, limit strength and more. Mostly used for the construction of tall skyscrapers and buildings, with all these benefits you should know that it is also costly compared to other bricks.
     

  • Concrete Bricks

    In India concrete paving stones and bricks are found much more compared to other, made with solid concrete and found most common brick for house builders.Unlike, other bricks you don’t get a fixed colour, you got options on concrete bricks, the color that you can select while the production of the concrete brick.
  • Fly ash Clay Brick

    These bricks are used less as they tend to pop out or get loose when they come in contact with water or moisture.Why is brick construction getting more popular nowadays?
  • Providing you with many options in colour, size, design and type, bricks provide you with an aesthetic approach
  • Unlike tiles or other materials, brick proves to be more durable and strong for a long period of time and is easy to maintain.
  • Release and absorb the moisture is one of the most important advantages of bricks, controlling the room temperature inside the infrastructure.
  • Provides you with a fireproof wall which is good for your safety.
  • If the bricks are kept properly then they can keep you away from sound pollution for sure.
  • Compared to other construction accessories, bricks can provide you with fewer maintenance charges which will help you save money and time.
  • Bricks are said to be the most durable and strong material ever made by a man, so you are assured with the best material which is strong and will provide you with a long-term service.
  • When compared to other materials bricks can exhibit above the natural thermal insulation. They can maintain and regulate interior temperatures due to their ability to absorb and slowly release heat. When compared to wood this can save more than 30 percent of energy.
  • Brick bears as an excellent wear resistance.

    block paving

What are the common properties of bricks?

The main properties of bricks are thermal, mechanical, durable, and physical properties.

  • Physical properties of brick

Physical properties of brick include size, shape, colour, and density. Let’s check out this in detail:

(i) Size

In the same country, the size of brick used in construction varies from place to place and country to country. Paver blocks in India suggests that an ideal brick will have a standard size of 19×9×9 cm.

(ii) Shape

Bricks generally have well defined and sharp edges. Usually, an ideal brick has a rectangular shape. While making block mold the surface of bricks is regular and even. However special purpose bricks can be either cut or manufactured in many other shapes. Generally, these are the modifications of rectangular shapes.

(iii) Colour

For color mixer red is the most common colour of building bricks. Sometimes variations may occur from deep red to light red to purple and buff. Over burnt bricks are recognized by very dark shades and also yellow colour indicates under burning.

(iv) Density
Depending upon the used clay type and the method of brick moulding like stiff-mud, hard-pressed, soft-mud etc the density varies.

  • Mechanical properties of bricks

Flexure strength and comprehensive strength of bricks are included in this category.

(i) The comprehensive strength of brick

When bricks are used in load-bearing walls this is the most important property. The degree of burning and composition of clay is the determining factor of comprehensive strength. While considering load-bearing walls this is the most important properties of bricks.

(ii)  Flexure Strength.

We usually say that common building brick shall not be less than 10 kg/cm2 because bricks are used in situations where bending loads are possible in a building. Bricks hold sufficient strength against oblique loads.  

plastic moulds for interlocking tiles

  • Thermal properties of bricks

Other than strong and hard an ideal brick also provide an adequate insulation against cold, noise, and heat. Density and porosity are directly proportional to heat and sound conductivity of bricks. Since heavy and dense bricks conduct sound and heat at a greater rate they have a poor acoustic and thermal insulation qualities. All for this we suggests that bricks should be of enough strength, light-weight, and possess adequate insulation.

  • Durability of bricks

Durability decides the maximum time in which bricks remain unaltered and strong when used in construction. Automatic brick making is also quite popular nowadays because experience has been proved that properly manufactured bricks are the most durable form of the material of construction, that is they remain for hundreds of years. Durability mainly depends on efflorescence, absorption value, frost resistance.

(i) Absorption value.

Absorption value is completely related to the porosity of the brick. Actually, porosity is the ratio of the volume of pores to the volume of gross of the sample of the substance. Mainly this absorption characteristic of bricks affects their quality in many ways. They are:

  • When the porosity is high the material becomes less solid, hence the strength will be reduced.
  • Water-related defects like frost-action and efflorescence are the outcome of higher absorption.
  • This will also lead to deeper penetration of water which in turn will lead to dampness.

(ii) Frost Resistance.

Frost action is a common phenomenon in cold climate, this is because bricks are quite porous materials. So that it should be protected in areas having rain to minimize absorption.

(iii) Efflorescence.

In humid and hot climates contorting and a withering process of bricks is a common process. The surface of bricks get covered with grey or white patches of salts and these are present in the original brick clay. Salts get easily dissolved when rainwater penetrates into the bricks. Evaporation starts soon after the rain. Along with water the salt move out and form thin encrustations on the bricks surface. Sulphates of calcium, sodium, potassium, and magnesium are the common salts precipitated during efflorescence. This is the reason why great emphasis is laid while testing the chemical composition of the clay for the block paving of brick manufacturing.

Bricks are the only type of construction building that provides you to shape them according to your wants, you won’t have to buy more materials and waste the left over. So if you have plans to construct something you wish according to your design, I suggest you to try bricks as per your construction material with the strong brick moulds from JR Rubbers.

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