Cement based self leveling mortar is a kind of dry powder product made up of special cement, selected aggregate, dry powder resin and a variety of modified additives. It is mixed with water to form a fluid slurry with excellent fluidity. Under the artificial auxiliary paving, it can quickly carry out automatic leveling. Cement based self leveling mortar has the characteristics of environmental protection, high construction efficiency and high flatness.
However, if the construction of cement-based self leveling mortar is not well grasped, there will be various unpredictable problems, such as surface powder, flower, bubble, pinhole, etc., what problems should be paid attention to in the construction of cement-based self leveling mortar?
What problems should be paid attention to in the construction of cement-based self leveling mortar?
Solution
One
Sanding ground treatment
For the ground with slight sanding, the ground shall be cleaned before construction, dust shall be removed with a vacuum cleaner, and the interface agent shall be brushed twice. If the water absorption of the base course is too high, it shall be brushed several times more, and self leveling construction shall be carried out after the interface agent is completely dry.
For the ground with serious sanding, the sanding machine shall be used to polish the ground with sanding, the loose layer on the surface shall be polished off, and the ground shall be reinforced with epoxy material, then the construction of cement-based self leveling mortar can be carried out.
Two
Solution to the problem of blooming and powdering on the surface
In order to avoid the occurrence of problems such as cement-based self leveling blooming and surface dusting, the water addition shall be strictly controlled during the construction of cement-based self leveling mortar. During the construction, the standard water addition shall be determined first, and a special person shall be assigned to weigh the water addition to ensure the same water addition during the whole construction process. At the same time, the mixing time of each barrel of materials shall be approximately the same to ensure full and even mixing.
Recommendation of excellent enterprises
Three
Base course crack treatment
For the wide cracks in the base course, the deep "V" groove shall be chiseled, and then the dust in the groove shall be cleaned, and the interface agent shall be painted to improve the bonding between the repair material and the base course. The repair can be made with special low shrinkage quick hard repair mortar, or the cracks can be filled and trowelled with cement-based self leveling mortar dry powder and a small amount of water.
Four
Control of air bubble pinhole
Bubbles and pinholes are the most common problems of cement-based self leveling mortar. In order to avoid the occurrence of bubbles and pinholes as much as possible, the interface agent should be applied twice according to the actual situation of the base course. When the water absorption of the base course is too large, the amount of the interface agent should be increased appropriately. The interface agent must be applied evenly. After the interface agent is completely dry, it is better to keep water dripping.
Often a small problem determines the success or failure of the matter. The same is true in the construction of cement-based self leveling mortar. Only by paying attention to these details can we get a high-quality floor.
Recommendation of excellent enterprises
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