1.Measures to prevent cracking

After pouring concrete to cover maintenance, increase the environmental humidity, especially in summer construction, should try to choose in the afternoon or night construction.

2. Preventive measures for plate breakage

2.1.Reduce the unit water consumption of concrete. Generally, gravel shall be no more than 160kg/m 3 and gravel no more than 170kg/m 3.

2.2. Concrete slump shall be strictly controlled. On-site mixing shall be no more than 62.5px and commercial concrete no more than 175px.

2.3. Strictly control the amount of cement and increase the content of aggregate. The amount of cement should not exceed 350kg/m 3.

2.4. Medium or coarse sand should be used instead of fine sand.

2.5. Coarse aggregate gradation is good, generally using continuous gradation, and the maximum particle size of stones is 40mm.

2.6. Choose a good additive, mixing with high-efficiency water-reducing agent or micro-expansion agent, can be used in winter early strong agent.

2.7. Cement varieties and brands should be reasonably selected. Generally, cement with little shrinkage and deformation should be selected, such as general silicon 425(R) and 525(R).

2.8. Carefully design concrete mix ratio, pay attention to water cement ratio is not more than 0.50, sand ratio should not be too large.

2.9. Mix the concrete evenly without segregation and bleeding.

TRUSEEN,Loyally provide you with the best products and services.

Tel:0086-371-86238892 | +86 15617732826

Email:admin@truseen-machinery.com