Old time scientists did not develop as now. Meanwhile rare cement or may not have. Because all the houses are built in my hometown with lime and sand. Since quality is a combination of lime mortar and sand are not high. Should construction workers are often very good at trying to increase the reliability of this mortar. They may be turning plenty of time to lime and sand mortar mix into each other is very fine. These families have more money, they use concentrated salt water as a solvent to mix lime and sand. So the quality of the mortar in the building was rising very high. The house was built by good mortar usually very durable and beautiful. Building walls ancient tradition of my country is not harsh outside.
Thus the ceramic tiles, grout lines always outward. Mortar quality of public builders are staged in front of everyone. At that time, about 50 years ago, a new family with the money to build houses. And they often shaving officials brick, burned bricks to build houses. So they take the initiative in terms of quality tiles. These bricks are very big at that time. The walls are also quite low houses. Therefore, to have a solid wall, in large part due to the quality of construction workers mortar. For good quality mortar, the builders have to spend a lot of effort. The first is that they must air mixture lime, sand, and water was logical to create the best adhesion of the mortar. And they have a lot of time turning it to get them mixed plastics. With lazy workmen, they mix the mortar in a short time, or the wrong ratio between the substances, should the composition of the mortar does not stick together. So they built the wall will not be good. We quickly crack, or pour the walls after a period of use. The building is one of the three largest in the life of a man in ancient times. Three big deal that is: Getting married, housing, purchasing buffaloes! So before you decide to select a certain builder, landlord family often went to see the house where that construction workers, to assess the quality of their mortars. Because of the mortar is required technical work and perseverance of most workers. That was the work that they make the most deceitful. Because lime mortar will damage clothes and their hands if they are kings on. With a low wall built house, with thin bricks and mortar, the quality wide decisions almost all the lifespan of buildings. So workers are not well-mixed mortar will not get a job. But workers also careful, become rich. Now go around my village, the house was built about 50 years ago are very rare. The luxury villa was born and replace those houses. Mortar used in construction now is a mixture of cement and sand between. The wealthy families, they use to mix mortar instead of just using the labor of his hands as before. Thus the quality of mortar used in construction are very high at present. These new homes are not dependent on the quality of the wall as before. But now it depends on the load-bearing structure of the frame! However, the quality of the mortar used in construction today is still special workers concerned. The walls are built of good mortar with very high reliability.
Author: Pham Thi Hoi
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