2．RDP in protective layer mortar
The protective layer plays a key role in the long-term stability and mechanical stability of the system. As with bonded layer mortar, this layer is modified with a polymer containing ethylene redispersible latex powder. In addition, to increase crack resistance and durability, the bonded layer is embedded with a polymer-coated alkali resistant mesh cloth. Technical requirements for protective layer mortar are as follows:
Good construction, suitable for a large area of application, good adhesion with EPS plate, to reach or exceed the strength of EPS body, with enough relaxation or flexibility, can disperse contraction stress, avoid cracking; Good impact resistance, no damage under the impact of external forces, increased water and air permeability, prevent water intrusion and cause damage to the system, at the same time make the internal moisture volatile in time, long-term durability, play a key role in the polymer can play a long-term stable performance in various climate conditions.