Make it Stick AWCI（让它粘 AWCI）.pdf

Make it Stick: By Russ Flynn Concrete block makes a super base for Portland cement-based plaster (stucco). The two materials are made from the same basic ingredients and they are extremely compatible. Prop- erly done, it’s a great combination. The Block The concrete block should have an open or coarse texture. This enables the stucco to interlock with the sur- face of the block, providing a me- chanical key bond (Fig. 1). Figure 2 Figure 3 In some parts of the country, stan- tion. Spray the blockwith water. If the water beads up as if on wax paper, you can forget suction bond Your remain- ing options are the use of a bonding agent or metal reinforcement. If the water is absorbed into the block, a suction bond is possible. However, there is one other consid- eration, the absorption rate of the block. A block with a high absorption rate is capable of