What do you think of the quality of red bricks?

The way to distinguish the quality of red bricks is to measure the weight, listen to the sound and look at the color.

1. Weight measurement: The quality of red brick is not directly related to its weight. Bricks of the same size and lighter weight are usually better, because it may indicate that the soil is uniform and properly fired. Too heavy bricks may be due to uneven soil quality or insufficient firing, which may affect their structural strength.

2. Listen to the sound: It is a simple and effective method to identify the quality of red bricks by tapping them. If the sound is clear as metal, it means that the brick has a good degree of sintering or hydration and high strength. On the contrary, if the sound is cloudy, dull or unable to make sound, it may mean that there are quality problems in the brick, such as insufficient firing, and the strength of this brick is usually poor.

3, look at the color: the normal color of red bricks should be light red. Too heavy or too light color may indicate that there is something wrong with the quality of the brick. The red color is formed because the iron element in the brick is converted into iron oxide at high temperature. Too bright color may mean that the firing temperature is too high, while too light color may be due to insufficient firing temperature or soil problems.