2. GENERAL INTRODUCTION:
WHEN A LIST MATERIAL, A FINE TOTAL AND WATER
ARE MIXED TOGETHER IN SUITABLE PROPORTIONS,
THEY FORM AN FLUENTLY WORKABLE PASTE WHICH
IS NOMINATED AS MORTAR.
WHEN THIS PLASTIC CONCRETE BECOMES HARD LIKE
A GRAVESTONE, THIS IS NOMINATED AS HARDENED
CONCRETE OR SIMPLY CONCRETE. FOR PREPARING
MORTARS AND CONCRETES, CEMENT AND LIME ARE
GENERALLY USED AS BINDING ACCOUTREMENTS ;
BEACH AND SURKHI AS FINE SUMMATIONS
ANDNPERSECUTED GRAVESTONE AND CRUSHED
BRICKS AS COARSE SUMMATIONS.
3. WHAT IS
MOTAR?
MORTAR IS A COMBINATION IN VARIOUS
PROPORTIONS OF BINDING MATERIAL LIKE
CEMENT OR LIME AND AN INERT MATERIAL
LIKE SAND OR SURKHI (CRUSHED BURNT
BRICK) OR CRUSHED STONE COMBINED WITH
WATER.
ACCORDING TO REQUIREMENT, SPECIFIC
QUANTITIES OF CEMENTING MATERIAL, SAND,
OR SURKHI, AND WATER IS ADDED AND
THOROUGHLY COMBINED TO MAKE A PASTE
FOR BINDING BRICK OR STONE MASONRY AND
FOR PROVIDING A PROTECTING AND
FINISHING SHIELDING ON THE INNER AND
OUTER FACES OF MANUFACTURING AS
PLASTER.
4. USES OF MOTAR
TO BIND MASONRY UNITS LIKE STONE,
BRICKS, BLOCKS, CEMENT
FOR PLASTERING ON WALLS AND
SLABS TO MAKE THEM IMPERVIOUS.
AS A FILLER MATERIAL IN FERRO
CEMENT WORKS AND STONE
MASONRY.
TO FILL CRACKS AND JOINTS IN THE
WALL.
USE OF CEMENT MORTAR GIVES A
NEAT FINISHING WORK TO WALL AND
CONCRETE WORK.
FOR POINTING THE JOINTS OF
MASONRY.
FOR PREPARING THE BUILDING
BLOCKS.
5. PROPERTIES OF CEMENT MORTAR
IT SHOULD STICK WELL WITH BRICKS OR STONES.
IT SHOULD BE CHEAP.
IT SHOULD BE DURABLE.
IT SHOULD BE EASILY WORKABLE.
IT SHOULD BE SET AS SOON AS POSSIBLE.
IT SHOULD BE ABLE TO WITHSTAND AGAINST TENSILE
AND COMPRESSIVE STRESSES.
IT SHOULD NOT ALLOW RAINWATER TO ENTER.
IT SHOULD NOT AFFECT THE DURABILITY OF THE
MATERIAL WHEN IT COMES IN CONTACT WITH THE
MATERIAL.
AS PER IS: 2260-1981 (INDIAN STANDARD), THE STRENGTH
OF THE MORTAR DEPENDS UPON THE PROPORTION OF
CEMENT AND SAND. STRENGTH OBTAINED WITH THE
VARIOUS PROPORTIONS OF CEMENT AND SAND ARE AS
FOLLOWS.
7. CEMENT MORTAR
Cement mortar is a mixture of cement, sand and
water where cement is used as binding material. The
ratio of cement and sand is 1: 2 to 1: 6.
This mortar is used where high strength is required
and water-insulation is required.
this cement mortar is mostly used in brick or stone
masonry.
CEMENT MORTAR
8. LIME MORTAR
Lime mortar is a traditional building material, and is now
only normally used for restoration, and repair of old
buildings.
It was generally made with a mix ratio of about 1:3.
The use of a lime mortar for pointing in general masonry
It is used in the construction of heavy loaded members.
Fat lime should not be used in damp places.
LIME MORTAR
9. MUD MORTAR
Mud mortar is mixtures of mud or clay, saw dust, rice
husk, water and cow dunk in which mud used as a
binding material.
It is also called Garo.
It is used to build economical and low-cost buildings.
It is not useful in damp places or in heavier buildings.
This mortar is used to build small houses, especially in
villages
MUD MORTAR
10. SURKHI MORTAR
This types of mortar is made from a mixture of lime,
water and Surkhi powder where lime is used as binding
material.
Surkhi is powdered of burnt clay which gives more
strength compare to sand.
It does not use sand.
This type of mortar can be used in all types of general
construction.
SURKHI MORTAR
11. GYPSUM MORTAR
Gypsum mortar consists of plaster and soft sand as
binding material and fine aggregate.
Commonly, it has low durability in damp conditions.
Gypsum is used as a binding material.
GYPS UM MORTAR
12. CEMENT LIME MORTAR
This type of mortar is made by mixing cement and lime
in a ratio of 1: 6 to 1: 8.
Lime mortar is a traditional building material, and is now
only normally used for restoration, and repair of old
buildings.
GYPS UM MORTAR
