1. Use simple,
2. Convenient transportation
3. Reduce the cost
4. Weathering resistance
5. Alkali resistance

Reinforced cushion block through monitoring and rebar connection, not easily to occur transfer the position, and support stability, displacement is not easy. Can effectively improve the quality of the construction work, in use by the height of cushion block control layer thickness, overcome the existing 

reinforced concrete engineering difficult: crack  and steel frame askew,        protective lay uneven. 

advantages:Weathering resistance, alkali resistance, high strength, locking, thickness, no loss, don't break, simple operation, saving time, save work

Widely used in buildings, roads, Bridges, tunnels, airports, railway and various civil building.