Effect of Interface Agent in Construction of Self-leveling Cement

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Effect of Interface Agent in Construction of Self-leveling Cement

Interface agents are used in different fields, and the process means and purposes of surface treatment are also different. Common interface agents can be divided into four process types: wetting and impregnation, coating treatment, coupling agent treatment and surface modification.
Application in the construction field, there are concrete interface agent, ceramic tile interface treatment agent, building insulation board interface treatment agent classified as a class of interface agent using coating treatment construction method.
Concrete interface treatment agent, with special polymer emulsion as the base material, supplemented by a variety of fillers refined from a high polymer polymer strong flexible liquid interface agent. With permeability, adhesion, water resistance, air permeability and weather resistance, can be formed between the grass-roots network system, to solve the gap between the empty drum, fall off and other quality problems.

Self-leveling interface agent is part of the ground base treatment, is an essential project in the construction of self-leveling, very important, directly affect the bonding performance of self-leveling and grass-roots ground. The amount of interface agent is actually relatively small, but it is only a thin layer, but it plays an important role. It can provide a qualified construction environment for cement self-leveling. If you don't do interface treatment, it is easy to form delamination and cause ground peeling.
Interface agent in the current market is divided into two kinds of water and powder, are used for concrete or mortar surface, give self leveling good bonding force, reduce the absorption of grass-roots and adhesive dust. No interface agent, self leveling can not work properly, interface agent for self leveling mortar for primer use. Reduce the porosity, the porosity is too high will absorb the water in the self-leveling binder, resulting in premature drying and low strength. Stick to the residual dust, improve the strength of the base. Improve the self-leveling surface effect, greatly reduce the surface needle eye and other defects. Improve the adhesion of self-leveling and grass-roots.

the role of interface agent:
A, increase the cement self leveling and the bond strength of the base;
B, enhance the interface and then close the capillary hole;
C, to prevent self leveling water penetration into the grass-roots before curing, resulting in incomplete self leveling hydration.
D, to prevent the substrate moisture rise caused by surface pores
e. Increase mobility

Basic general water absorption is large, if not the interface agent, construction, water in the self leveling mortar will soon be absorbed by the grass-roots ground, resulting in reduced flow, it is difficult to level. In addition, if you do not use the interface agent, self-leveling mortar is prone to late hollowing, cracking and other risks. So the interface agent still has to be done.

Key words:

Self-leveling interface agent