Look at the logo, color logo, feel, color, storage period, setting time, gluing, paving method, etc. on the paper bag. These are the details that should be paid attention to when purchasing cement and brick materials. This paper will introduce in detail how to buy high-quality cement and brick materials.

Clear identification

The cement package shall be marked with the factory name, production license number, cement name, registered trademark, variety (including variety code), label, packaging year, month, day and number.

color discrimination

Different kinds of cement are identified by different colors: red represents portland cement and ordinary portland cement, green represents slag cement, and black represents volcanic ash cement and fly ash cement.

Feel delicate

Twist cement powder with your fingers, and it feels a little fine, with sand and powder, indicating that the fineness of cement is normal.

dark color

The color is dark gray or dark green.

No caking phenomenon

There is no caking phenomenon due to moisture (cement performance declines after 30 days). After storage for three months, the cement strength decreased 10%-20%. Reduce15%-30% after half a year; It will be reduced by 25%-40% after one year.

clotting time

High-quality cement can set in more than 6 hours. Over 12 hours, the quality of non-condensable cement is poor.

No need to add glue.

Good cement does not need glue, and poor cement does not need glue. Sticking wall tiles and adding 108 glue can strengthen the adhesion between cement and wall.

Pre-paving treatment

Before laying bricks, the walls and floors should be brushed. You can't stick bricks directly on the wall paint. Dry paving is usually used for floor tiles and wet paving for wall tiles.