To put it simply, the concrete is light and heavy, and the thick and fine materials are separated. It is inhomogeneous. The coarse and heavy materials sink, and the light and fine materials float. Anti-segregation agents need to be added to make them homogeneous and smooth. No cracks, delamination and other problems will occur.
Main ingredients of anti-segregation agent:
5-15 parts of fly ash, 5-15 parts of mineral powder, 1-2 parts of steel fiber, 1-2 parts of polyethylene glycol , 20-30 parts of polyhydroxyacid water-reducing agent, 0.8-1.2 parts of tackifier, 0.5-0.9 parts of coagulant, 200-300 parts of deionized water, several parts of liquid caustic soda, 5-10 parts of silicone monomers , 3-5 parts of oxidizing agent, 1-3 parts of reducing agent.
Construction method
1. The effective dosage is small and the dosage range is wide. According to the degree of segregation of concrete, the dosage is 50g/m3~250g/m3. If the segregation of concrete is severe, the dosage can be further increased.
2. If overmixing causes the concrete to lose fluidity, water-reducing agent can be added to restore fluidity.
3. Within a wide dosage range, it has no adverse effect on the strength of concrete.
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