Concrete Knowledge 100 Questions (8)

43. What is the impermeability of concrete?

A: It refers to the concrete's resistance to pressure water infiltration. Both basement and reservoir are required to have good impermeability.

44, impervious concrete commonly used impervious grade has a few?

A: There are four commonly used impermeability grades: S6,S8,S10,S12(old notation) or P6,P8,P10,P12(new notation). S is the capital letter of the 

Chinese word "permeation" and P is the capital letter of the English word "impermeability".

45. What is the frost resistance of concrete?

A: The ability of concrete to resist repeated freezing and thawing. The freeze-resistance grade is F100,F150,F200,F indicates freeze-resistance, 

and the corner note number indicates the number of repeated freeze-thaw cycles of concrete at -15℃ to room temperature.

46. What is the difference between frost resistance and frost resistance of concrete?

A: The frost resistance of concrete refers to the ability of concrete to resist repeated freezing and thawing after reaching the design strength, 

and the frost resistance of concrete refers to the ability of concrete mix to prevent freezing damage at low temperature in the process of setting and hardening.

47, what is the durability of concrete?

A: It refers to the continuous ability of concrete to resist weathering, water seepage and erosion by harmful substances. The stronger this capability, the better the durability.

48. Why treat the customer as the king?

A: Because customers create the production conditions for commercial concrete companies, we can only have more production tasks and earn more money from 

them if we treat them as superior. The customer is the god of money.