6.Conclusion
This research paper concluded, through field observations, laboratory tests and chemical analyzes, that red bricks are exposed to various types of damage agents, and the chemical composition and physical properties of bricks are the main causes of brick damage. This is due to the mineral components of the bricks decayed, and the temperature of combustion of the bricks plays an important role in this, as it was found from the examination that was carried out using the PLM polarized microscope that the bricks contain some organic materials such as chopped straw and animal dung, which were added during the manufacturing processes in order to work on Improving the properties of the bricks were burned at low temperatures, which caused many damage of bricks, and the decomposition of many components of the bricks. The study also showed signs of brick damage such as peeling and cracking, salt formation, and partial collapse of walls and wells, and this was confirmed by various tests. And the analyzes of the study, in addition to the presence of salts, especially halite, which weakened the strength and durability of the bricks, and also helped to accelerate the processes of brick damage. The brick study indicates that the raw clay material that was used in the manufacture of red bricks was local from the same site, where raw materials from Nearby deposits rich in carbonates,