There was no cement in ancient China. How did the ancients build houses?

In modern times, people need cement to build houses, but in ancient times, cement was not used to build houses, but used to? Glutinous rice mortar? Glutinous rice mortar is also made on the basis of lime, which is a mature technology for building houses in ancient times. In terms of quality, it is sometimes worse than modern cement, but at first people only used lime to build houses. Although it is a little hard, the overall quality is not very good. With the wisdom of ancient laborers, people finally created glutinous rice mortar.

At first, the ancients did not use glutinous rice mortar, but used lime to combine sand and water into building materials. Although it is very convenient to use, the stability of the house is not very good because of the rough and dense overall materials. If there is any rainstorm or natural disaster, there is no way to resist it. Before the appearance of glutinous rice mortar, people usually used lime and sand to combine with water.

The glutinous rice mortar appeared in the Southern and Northern Dynasties. Because there were many wars in the Northern and Southern Dynasties, people created this kind of material to resist foreign people. The practice is to boil glutinous rice and pour it into lime, sand and water to form a more viscous material. However, because the output of glutinous rice was relatively small at that time, this material was not popularized. With the development of economy, the output of glutinous rice is increasing. In the Ming Dynasty, many city walls and water conservancy projects were made of glutinous rice mortar.

Glutinous rice mortar was the most important material for building houses and other projects in ancient times, and its quality was also very high, which was no worse than that of building houses today. However, with the development of technology, the use of glutinous rice mortar is no longer suitable for today. At the same time, due to the age, this technology is not well known, and a large amount of glutinous rice is needed every time. For people, glutinous rice is food. Now the use of concrete avoids the result of wasting food, and the technology is also very high.