Since cement is the basic raw material for cement pipe making machines, its quality significantly affects the quality of the finished product. Below are some points to note regarding cement:

1. Prevent Moisture and Hardening

Moisture-hardened cement will reduce or even lose its original strength. Cement that has clumped or hardened due to moisture must be sieved before use.

2. Avoid Rapid Drying in Direct Sunlight

If concrete or plaster is exposed to direct sunlight immediately after application, its strength will decrease or even be completely lost due to rapid evaporation of moisture. Therefore, the substrate must be thoroughly cleaned and moistened before construction; after construction, it should be properly covered and watered according to specifications for curing.

3. Avoid Freezing at Sub-zero Temperatures

If concrete or mortar freezes after mixing, the cement cannot hydrate, and the expansion of water upon freezing will cause the concrete or mortar to gradually crumble and deteriorate from the surface inwards. Proper construction procedures must be followed.

4. Avoid High Temperatures

Cement will lose strength if frequently exposed to high temperatures and extreme heat. Therefore, do not place cement in high-temperature, high-heat environments.

5. Avoid Dirty or Soft Substrate

Cement can bond firmly to a hard, clean substrate, but the bonding strength is related to the smoothness of the substrate surface. When working on a smooth substrate, it must be roughened, hemped, and cleaned beforehand to ensure a strong bond between the cement and the substrate. Dirt, grease, acids, alkalis, and other substances on the substrate will act as a barrier and must be thoroughly cleaned. After cleaning, apply a layer of neat cement slurry before applying mortar or pouring concrete.

6. Prevent Impure Aggregates

If the sand and gravel used as aggregates in concrete or cement mortar contain dust, clay, or other organic impurities, it will affect the bond strength between cement and sand/gravel, ultimately reducing compressive strength. Therefore, if the impurity content exceeds the standard, it must be cleaned before use.

7. Avoid Excessive Water and Thick Mortar

Since the water required for hydration is only about 20% of the cement's weight, excess water will leave many pores in the concrete after evaporation, reducing its strength. Therefore, while ensuring a dense pour, the amount of water used for mixing should be minimized.

8. Prevent Acid Corrosion

Acidic substances will neutralize the calcium hydroxide in cement, producing a loose, expanding product that easily hydrolyzes and pulverizes upon contact with water. This causes the concrete or plaster layer to gradually corrode and disintegrate. Therefore, cement should be protected from acid corrosion.

9. Pay Attention to the Proper Mortar Mix Proportion For example, select the appropriate mortar ratio according to the application area, such as plastering walls, laying floor tiles, or tiling walls. Each batch of mixed mortar should ideally be used within two hours.

10. Use mortar sand specifically designed for use in building materials markets, paying particular attention to controlling the sand's mud content. High mud content will reduce adhesion.

11. The mortar should be mixed evenly. It is recommended to use the mixed mortar within 2 hours and 30 minutes.

In short, the quality of the cement directly affects the quality of the cement pipe-making machine product; therefore, cement must be stored properly.