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Concrete interface agent to deal with concrete, fly ash brick and aerated concrete, lime-sand brick surface, the solution due to the strong water imbibition or smooth surface interface bonding not easily, can greatly enhance the between old and new concrete and concrete and plaster mortar bond, avoid floated coat empty drum, fall off, the problem such as shrinkage cracking.

Inorganic thermal insulation mortar plastering molding thickness at least 1.5 cm, and belongs to the soft material, relative to other plastering mortar is difficult to compact treatment. On the other hand, due to the use of poor quality vitrified beads, hardened inorganic thermal insulation mortar has a large amount of water absorption, easy shrinkage cracking and other problems, inorganic thermal insulation construction of the base wall interface agent selection and use is extremely important, improper treatment is easy to produce hollow drum cracking.

Before doing inorganic thermal insulation construction, it is necessary to analyze what type of wall is, and choose the appropriate interface treatment agent according to the characteristics of the wall.

Aerated concrete or aerated block wall should be considered to close the gap of the substrate, reduce the water absorption of the wall, slow down and reduce the moisture in the mortar sucked by the block, so as to ensure the gel hardening of the mortar under better conditions. It plays the role of bonding and bridging between the block and the plaster to ensure that the mortar and masonry are more easily combined into a solid whole after the wall. The interface agent used by the aeration block must have more than 10min drying time, only in this way can ensure the construction, workability, shear bonding strength is greater than 1.0MPa, after soaking treatment, heat treatment, freeze-thaw resistance cycle treatment, alkaline treatment, are greater than 0.3MPa tensile record ah strength.

Concrete surface is smooth, the use of interface treatment agent, can be firmly bonded to the base, and can be well bonded by the new insulation layer, is a two-way affinity material, to avoid the insulation layer of empty drum, cracking, falling off phenomenon.

If concrete interface agent used in aerated concrete block, metope appears fast blot moisture in the interface agent, interface agent lose after water, cement is not fully hydrated, teams will be very low, lost to use the function of interface agent, less than bond bridge role, not only cannot achieve the role of mutual affinity, can greatly reduce instead.