Table of Contents
Mortars are classified into following types depending on binding materials used, building materials, nature of applications and density of mortar.
Classification Of Mortars:
![Classification Of Mortars](https://constroquicks.com/wp-content/uploads/2022/09/image.png)
Classification Based on Types of Binding Material:
Mortars are classified into following depending on binding materials used for bonding.
Binding materials can be lime, cement, surkhi, fly ash etc.
1. Lime Mortar:
- Lime mortar is mortar in which lime (hydraulic lime or fat lime) is used as binding material in combination with sand and water.
- Basically, fat lime and hydraulic lime is used in lime mortars.
- Fat lime mortar is used commonly and for damp situations hydraulic lime mortar is used
- Lime mortar is ancient type of mortar and widely used in historic structures along with stones.
![lime mortar](https://constroquicks.com/wp-content/uploads/2022/09/image-1.png)
2. Cement Mortar:
![cement mortar](https://constroquicks.com/wp-content/uploads/2022/09/image-2.png)
- In this type of mortar cement is used as binding material along with fine aggregate and water.
- Portland cement is mostly used in plastering, brickworks, PCC, pointing etc.
- For special purpose of cement mortar, special types of cement may be used.
- This is modern type of mortar commonly used in construction industry.
3. Surkhi Mortar
- This is basic type of mortar in which surkhi (combination of crushed burnt bricks and lime) is mixed with fine aggregates and water.
- As it consists of crushed burnt bricks, the colour of mortar is little bit red in colour.
- The percentage of lime and crushed burnt bricks is depend upon the nature of work in which it is used.
- This is mostly used in foundation works.
- Note: Surkhi mortar can’t use along with cement as it is reactive with cement and can be harmful for construction
![surkhi mortar](https://constroquicks.com/wp-content/uploads/2022/09/image-4.png)
2. Classification Based on Types Of Building Material
1. Gypsum Mortars:
- In this type of mortar Gypsum is used as binding materials.
- This is very rarely used mortars.
- This type of mortar is used in plasters only. (Internal plasters only, as gypsum is having toxic relation with water and can not be used as external plastering)
![gypsum mortar](https://constroquicks.com/wp-content/uploads/2022/09/image-5.png)
2. Gauged Mortars:
![gauged mortar](https://constroquicks.com/wp-content/uploads/2022/09/image-6.png)
- This type of mortar is prepared by mixing cement and lime together.
- As it consists of lime and cement together, it is denser, stronger and durable than ordinary lime mortars.
- The ratio of lime and cement is depended on the purpose of its use.
3. Composite Mortars:
- In this type of mortar, more than one binding material is used.
- For example, surkhi lime water. Surkhi lime sand mortar, cement lime mortar, cement clay mortar.
- This types of mortar is used according to the nature of the works.
3. Classification Based on Nature of Application
1. Brick Laying or Masonry Mortar:
Mortar is called brick laying mortar or masonary mortar when its mainly used in brick masonary as filler in joints.
![masonary mortar](https://constroquicks.com/wp-content/uploads/2022/09/image-7.png)
2. Finishing Mortars or Plasters:
Mortar is called Finishing mortar or plaster mortar when its mainly used as plastering materials.
![finishing mortar](https://constroquicks.com/wp-content/uploads/2022/09/image-8.png)
4. Based On Density of Mortar
1. Heavy Mortars:
2. Light Weight Mortars:
- In this type of mortar, mortar density is always greater than 1500 kg/m3
- Fine aggregates used in heavy mortar is derived from heavy quartz.
- Heavy mortars can be used in foundation and load bearing structures.
- The heavy mortar of bulk density greater than 2000 kg/m3 can be termed as X rays shielding mortars.
- In this type of mortar, mortar density is always less than 1500 kg/m3
- Fine aggregates used in light weight mortar is derived from poor quartz, pumice stone, blast furnace slag.
- Light weight mortars can be used in structure where light elements are required.
- Special type of Light weight mortars – Bulk Density – 600 – 1000 kg/m3 – for making sound proof ceiling and walls.
Rather than this there are also many special types of mortars are there.
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