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Mortar is a mechanical mixture in varying proportions of a binding material such as cement or lime and an inert material or fine aggregate like sand, surkhi, etc. The density of mortar varies with the construction material and its qualities.
The binding material and fine aggregate are sometimes referred to as matrix and adulterant respectively.
Mortar is used as a binding material in stone or bricks masonry, or concrete, as a covering product to walls in the form of plaster to give, a smooth, hard, and decorative surface.
On account of its plastic nature, when green, the mortar forms an excellent, even bed for the irregular surface of the stone and this results in equal distribution of pressure over it.
To estimate the density of material we have to understand its formula and its corresponding units. Density is described by the symbol ρ or it can also be expressed by the capital letter D.
|p = m/V = 1/v,|
p = density [kg/m3]
m = mass [kg]
V = volume [m3]
v = specific volume [m3/kg].
2. Bulk Density of Mortar
Based on the dry bulk density of mortar, they are divided into two groups,
Heavy Mortar is made from heavy quartz material. The Heavy Mortar consists of a bulk density of greater than 1500 kg/m3.
Lightweight Mortar is made from lightweight sand. The lightweight mortar consists of a bulk density of a maximum of 1500 kg/m3.
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