The problem of rock tile adhesive not sticking firmly is often caused by the combined effect of multiple factors. It is necessary to conduct a comprehensive investigation and analysis from multiple aspects such as base treatment, material selection, construction operation, and environmental conditions to find a targeted solution. First, the state of the base surface should be checked, which is the basis for firm adhesion. If the base has problems such as looseness, hollowing, oil stains, and dust, it will directly affect the adhesion between the adhesive and the base. For example, if the floating dust on the surface of the base is not cleaned up, it is like forming an isolation layer between the two, which makes the adhesive unable to adhere tightly. At this time, the base needs to be thoroughly treated. First, use tools such as brooms and shovels to remove the floating slurry, oil stains and loose materials on the surface. For the hollow parts, chisel and repair them again to ensure that the base is solid, flat and clean. If necessary, the interface agent can be used for bottom sealing to enhance the adhesion of the base.
The quality and applicability of the material itself are also one of the key factors. If the selected rock tile adhesive model does not meet the construction requirements, such as insufficient bonding strength and poor water resistance, it is easy to have a loose adhesion. Different types of rocks and tiles have different performance requirements for adhesives. For example, natural rocks have a high water absorption rate, so an adhesive with stronger bonding and water retention may be required. The material and size of the tile will also affect the choice of adhesive. At this time, the performance indicators of the material should be carefully checked to confirm whether it matches the substrate to which it is pasted. If the material is found to be unsuitable, it is necessary to replace the adhesive that meets the requirements in time. At the same time, pay attention to check the production date, shelf life and storage status of the product, and avoid using expired or damp and agglomerated materials, because the performance of such materials may have declined and the pasting effect cannot be guaranteed.
Whether the operation specifications during the construction process are directly related to the pasting quality. When mixing the adhesive, if the water-cement ratio is inaccurate and the mixing is uneven, the performance of the adhesive will be unstable and the bonding strength will be affected. For example, adding too much water will make the adhesive too thin and soft, and the shrinkage rate will increase after drying, which is prone to hollowing and falling off; adding too little water will make the adhesive difficult to apply and insufficient bonding. When mixing, it should be carried out strictly in accordance with the proportions in the product manual, and use an electric stirrer to stir thoroughly until a uniform, non-lump paste is formed, and it should be left to stand for a period of time to fully mature. During the pasting process, the thickness and fullness of the adhesive are also crucial. If it is applied too thinly or unevenly, the bonding area between the rock or tile and the base layer will be insufficient, resulting in a weak pasting. The correct approach is to use a toothed scraper to evenly apply the adhesive to the base layer or the back of the tile to form a coating with moderate thickness and consistent texture, ensuring that the adhesive can fully contact during pasting to avoid hollowing.
Environmental conditions also have an important impact on the curing and bonding properties of the adhesive. Construction in an environment with too low or too high temperature will have an adverse effect on the effect of the adhesive. In a low temperature environment, the curing speed of the adhesive slows down, and even freeze-thaw phenomena may occur, resulting in a decrease in bonding strength; in a high temperature environment, the water in the adhesive evaporates too quickly, which is easy to cause surface crusting and affect the bonding effect. Therefore, construction under extreme temperature conditions should be avoided as much as possible. The suitable construction temperature is usually between 5℃ and 35℃. In addition, an environment with high humidity will prolong the drying time of the adhesive. If the ventilation is poor, it may also cause the adhesive to be in a wet state for a long time, affecting its bonding strength and durability. In this case, it is necessary to strengthen ventilation and ventilation at the construction site. If necessary, fans and other equipment can be used to accelerate air circulation and improve the humidity conditions of the construction environment.
For the parts that have not been firmly pasted, corresponding repair measures need to be taken according to the specific situation. If it is a small area of hollowing, you can first use a utility knife to cut along the edge of the hollow, carefully remove the loose rock or tile, clean the old adhesive on the base and the back of the tile, and then re-apply new adhesive for pasting, and apply appropriate pressure to make it tightly bonded with the base. If the hollow area is large or the adhesive layer falls off as a whole, it is necessary to remove the rocks or tiles in the entire area, re-process the base, and paste according to the correct construction process. During the repair process, attention should be paid to the combination of new and old adhesives to avoid the recurrence of poor adhesion due to improper interface treatment. After the repair is completed, the maintenance of the repaired part should be strengthened to avoid premature external impact or vibration, and ensure that the adhesive can be fully cured.
Preventing the occurrence of poor adhesion is more important than repairing afterwards, so full preparation should be made before construction. Construction personnel need to be familiar with the performance and construction requirements of rock tile adhesive and strictly follow the operating procedures. By conducting a small sample test, you can understand the bonding effect of the adhesive and the substrate in advance, and adjust the materials or construction methods in time when problems are found. At the same time, a sound quality inspection system should be established to strictly inspect each process during the construction process to ensure that the base treatment, material preparation, pasting operation and other links meet the requirements. Strengthen the management of the construction site, arrange the construction sequence reasonably, and avoid cross-operation affecting the pasting quality. For example, after pasting rocks or tiles, water operations or stacking heavy objects on them should be avoided until the adhesive is completely cured.
From a long-term perspective, choosing high-quality rock tile adhesive and a reasonable construction plan is the basis for ensuring the quality of pasting. When purchasing materials, reputable brands and suppliers should be selected, and product quality inspection reports and instructions should be obtained to ensure that the performance of the materials meets relevant standards and engineering requirements. When designing the construction plan, factors such as the use environment of the building, the characteristics of rocks and tiles, etc. should be fully considered to formulate a scientific and reasonable pasting process. For example, for parts with high safety requirements such as the exterior walls of high-rise buildings, it may be necessary to combine pasting and anchoring to further enhance the firmness of the pasting. Through the above measures, the occurrence of rock tile adhesive sticking problems can be effectively reduced, the quality and safety of the pasting project can be ensured, and reliable guarantees can be provided for the beauty and practicality of the building.
