Features of building stones

Features of building stones

What is rock
It refers to materials from the earth's crust that are made from one or more minerals that are linked together.

Rock or soil
From a geological point of view, rock is referred to as material from the earth's crust, which is composed of one or more
 minerals that are linked together. In contrast to the massive mass of particles with discrete grains or loose grains formed
 due to weathering of rocks and in situ. However, in engineering and construction works, the geological prospecting drilling
 capability as an indicator of their classification into rock and soil groups Is used.

The origin of the formation of rocks and rocks
The two mountainous and sandy mountain processes on the earth lead to the formation of rocky products.

Features of building stones

 General Specifications for Stone Selection for Building Materials Structure Properties
The rocks used in construction work must have the following characteristics:
1- The rock fabric should have a healthy structure, that is, without grooves, cracks and loose veins 
(not karmo)
2) without any bumps
3. No caries
4. Uniform, uniform and homogeneous
5. Construction stone should not absorb high water, so do not:
A. Dissolve or dissolve in water
B- All or part of it will add more than 8% of the weight of the water to the property of building 
stones
6. Construction stone should not be contaminated with natural and artificial materials.
 Features of building stones
7. Stone must withstand the physical and chemical conditions of the environment, therefore:
A) Resist against wind, freezing, temperature changes and in the presence of water flow in front of it and all erosion factors. 
Features of building rocks
B-Resistance to acidic and alkaline chemical environments, as well as hydroxylation and oxidation. Features of building stones
8. Compressive strength for load bearing parts should not be less than 150 kg per square centimeter. Features of building
 stones
9- Resistant to abrasion. Features of building stones
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