What are classification of bricks?
They have good load bearing capacity, damp proof, and chemical resistance properties. They have a uniform red color. They are classified as Class A, class B, class C. Class A is the strongest but Class B is most used.
What are the different components of a brick earth?
Composition of good brick earth:
- 1) Silica. Good brick earth should contain 50 – 60% of silica. …
- 2) Alumina. Good brick earth should contain 20 – 30% of Alumina. …
- 3) Lime. It should not be greater than 5% for good bricks.
- 4) Iron oxides. It should be in the range of 5 – 6% for the good bricks.
- 5) Magnesia.
What are 3 types of bricks?
There are three main types of bricks – facing bricks, engineering bricks and common bricks.
What are the harmful ingredients in brick earth?
Harmful Ingredients in Brick Earth
- Limestone: a. Amount of limestone in the brick should not be more than 1%. …
- Organic Matter: It makes the brick dark and porous. b. …
- Sulphides and Sulphates: a. …
- Alkalies: a. …
- Pebbles of stone and gravel: a. …
- Iron Pyrites. a. …
- Water. a. …
- Carbonaceous Materials. a.
Why is silica used in bricks?
Silica brick is a kind of basic refractory and has good corrosion resistance to acid slags. It is mainly made from natural silica sand whose SiO2 content should be more than 96%. The higher SiO2 content in silica sand, the higher temperature silica bricks resist.
What is the main ingredient of a brick?
The main ingredient of most bricks is clay. It always has been. There are particular kinds of clay minerals that are more suited to making bricks and often the location of the clay can have an impact on the colour of the end product.
What are the different types of mortars used for engineering works?
- Cement Mortar. Cement mortar is a type of mortar where cement is used as binding material and sand is used as fine aggregate. …
- Lime Mortar. Lime mortar is a type of mortar where lime (fat lime or hydraulic lime) is used as binding material and sand is used as fine aggregate. …
- Gauged Mortar. …
- Surki Mortar. …
- Mud Mortar.
What is the composition of fly ash bricks?
2- Raw material required are fly ash shall conform to Grade 1 or Grade 2 of IS 3812 (60-65%), Bottom ash used as replacement of shall not have more than 12 percent loss on ignition when tested according IS 1727, lime shall conform to class C hydrated lime of IS 712(8-12%), gypsum (5%), locally available sand/stone dust …
What is the function of magnesia in brick earth?
Magnesia: A small quantity of magnesia in brick earth imparts a yellow tint to the bricks and decreases shrinkage. But excess magnesia leads to the decay of bricks.
What are the 4 types of mortar?
There are four main types of mortar mix: N, O, S, and M. Each type is mixed with a different ratio of cement, lime, and sand to produce specific performance characteristics such as flexibility, bonding properties, and compressive strength.
What are the classification of mortar?
Mortar can be classified into lime mortar, surkhi mortar, cement mortar, gauged mortar, gypsum mortar and mud mortar.
What are the 4 types of concrete?
Let’s take a quick look at the most common types of concrete and what they are used for:
- Reinforced Concrete.
- Lightweight Concrete.
- High-Strength Concrete.
- High-Performance Concrete.
- Precast Concrete.
What is the gap between bricks called?
In masonry, mortar joints are the spaces between bricks, concrete blocks, or glass blocks, that are filled with mortar or grout.