FAQ
Most Common Question?
Q: Why do cracks appear after cement pouring?
A: Cracks are usually caused by improper curing, rapid water evaporation, unreasonable mix ratio or uneven foundation settlement. Timely watering and proper water-cement ratio can effectively reduce cracking.
Q: What’s the difference between different grades of cement?
A: Cement grade represents its strength level. Higher grade means higher early and final strength, suitable for high-load and high-rise projects.
Q: Can damp and caked cement still be used?
A: Slightly caked cement can be broken and used with minor strength loss. Severely damp and hardened cement is not recommended, as it will seriously affect quality.
Q: What is cement clinker, and how is it related to cement?
A: Cement clinker is the key semi-finished product, made by calcining limestone and clay. After grinding with gypsum and other materials, it becomes finished cement.
Q: How long is the general storage period of cement?
A: Under dry and ventilated conditions, the shelf life is usually 3 months. Strength will decrease over time, so freshly produced cement is preferred.