watertrial96

Exmork machinery manufactures concrete block making machine and clay brick making machine . Cement bricks and unfired clay cement bricks are new bricks made of clay mixed with a small amount of cement and admixtures, which do not need to be fired and are naturally cured. The production process is as follows: Raw material selection 1. Clay: It must contain a certain amount of loose particles to facilitate mixing cement. 2. Cement: Adding 10% of 425# ordinary Portland cement can improve the strength and water resistance of the brick. 3. Admixture: Adding a small amount of admixture (reinforcement agent) can improve the hardening strength of the brick. 4. Water: The strength of the brick is high when the water content is appropriate. Process operation 1. Mixing time: The longer the mixing time, the more evenly mixed it can be. Concrete block making machine of dry mixing for 20 minutes is 15-23% higher than that of 10 minutes; the wet mixing time is preferably when the material does not clump. 2. Molding pressure: The pressure of clay cement brick during molding is best at 500 kilograms per square centimeter. Under this pressure, the product has high compressive strength and good water resistance. If the pressure is too low, it is not easy to compact. 3. Curing conditions: Clay cement bricks are generally protected by solar energy. The strength of the 7-day natural curing in the sun is equivalent to 67-90% of the strength of the 28-day age; the strength of the 28-day age is 80-95% of the strength of the quarter-year age.