Common ground leveling methods
At present, there are generally three types of ground leveling methods: machine grinding plus plaster leveling, cement mortar leveling, and self-leveling leveling. The characteristics of each leveling method are as follows:
Machine grinding plus plaster leveling:
1. Do not increase the ground
2. Walk 2 hours after construction (work)
3. The construction can be wooden flooring in 3 days
4. The construction is fast (only one day per household) and the price is affordable, which is much more favorable than cement leveling and self-leveling.
Cement mortar leveling:
1. Increase ground minimum 2 cm
2. It can be stepped on (construction) for 3 days after construction
3. After the construction is completed, wait at least 15 days after laying the wood floor
4. Moderate price
Self leveling leveling:
1. Go to the highest point of the room
2. Cannot enter people after construction for 24 hours
3. After construction, almost 15 days after the cement is to be applied to the wood floor.
4. The highest price
Construction Conditions:
1. Machine grinding plus plaster leveling: Construction can be done at any time (preferably after the wall and floor tiles of the kitchen and bathroom are finished).
2. Cement leveling and self-leveling Leveling: It must be done after the kitchen and bathroom tiles have been finished and between the walls.
Ground leveling construction points
In the above three methods, the best effect is self-leveling leveling, but its price is relatively high. With the development of technology, self-leveling and leveling technology will become better and better, and the price will gradually become equal to the leveling price of cement mortar. It will become the first choice for future ground leveling methods. The following are the main construction steps for self-leveling ground leveling. The general flow includes the following steps: Primary surface treatment → Brushing interface agent → Self-leveling → Drum penetration → Finished maintenance.
First, the basic surface treatment: grinding the ground
Generally, there is a relatively protruding place on the ground of the house, and the place where the high place can be polished by means of a rotary flat grinding method is that there is no pipe below. If the high place is not polished, then the leveling ground will appear to be scraped by the teeth of the ground in the same high place, leaving behind the same amount of cement, and finally found out that the ground is good and still high, low The place is still low. At the same time grinding can save a lot of materials, which is a very important step in the ground leveling.
Second, coating interface agent
This step is to paint the interface agent. Firstly, apply two interface agents on the smooth ground surface. The interface agent is actually a glue, and the function is to make the self-leveling cement more tightly connected to the ground. note. There are many kinds of interface agents on the market. The counterfeit products are very serious at present, and some guerrilla construction teams are easy to use the interface agents that have poor water quality after they are leveled. As a result, many problems arise on the ground. For example, from the empty, sand and so on. Therefore, ground leveling as an important ground treatment before floor installation must not be used to find guerrilla construction. Otherwise, the consequences may be very painful.
Three, self-leveling cement
According to the worker's introduction, self-leveling cement and ordinary cement have the same appearance but different effects. Ordinary cement is usually used in conjunction with sand, in order to prevent the cement from being cracked due to its high strength, while the use of pure cement is rare, and the use of cement is rare or extremely thin. The use of pure cement must be carried out after the maintenance, otherwise it will certainly crack.
Self-leveling cement, as the name suggests, must be able to flow, but it must not be too thin, otherwise the strength after drying is not enough. Usually the ratio of self-leveling cement to water is 1:2.
Here we must also pay special attention to the shoes of the left worker's master. Underneath his leather shoes, there is a layer. Here is a brief description for friends. The following shoes are very simple. The sole is a layer of wood, and then the above Two belts, so that you can put the "shoes" on the feet, and the soles are covered with nails below, but it is very loose, but it is a steady problem is not. The reason is that during the construction operation, the cement surface will walk, and such shoes will not leave a mark on the cement.
Fourth, self-leveling on the court
This step is the construction of self-leveling, which is the most critical step in the entire leveling. One is that the proportion of self-leveling should be just enough to ensure the strength of the ground. The ground with no strength is often the basis for the ash on the latter stage; the second is the starting position for self-leveling construction. The level of the ground must be leveled. After the flatness, it is important to start the construction from the leveling position.
The well-mixed self-leveling cement is poured directly on the ground. A word “flows†and sees the moment of falling down. This is a state of refusal or not. Do not think of self-leveling construction as too simple. When self-leveling cement is completely leveled, it is impossible. Workers are also required to use a ruler to push cement, so that cement can be pushed open.
Fifth, roller infiltration
When this roller rolls over the cement, it will not leave any traces on it. Cement is not a pure liquid. It cannot be absolutely flat, and there will be a little unevenness in the process of pushing it, and it will be flattened by the roller.
Often the owners asked why the floor that was decorated or made by the guerrillas was good at the time. Why did the skin fall out after a few days? This issue has a very important factor in this step. The causes of these problems are the quality of the self-leveling itself, the quality of the interface agent (too much water/exact shoddy products) and the construction process. If the self-leveling is not covered with the roller when it is covered on the ground Pressing evenly can easily cause problems such as local unevenness in the ground, and small pieces of blank space in the later period, so the role of the drum is very large.
Six, conservation
Self-leveling air-drying is very fast, and generally new houses can be paved with wooden floors in three days. Because of the original ground, the old house takes about 1 week to 2 weeks. The result should be completely in accordance with the installation requirements of wood floors.
Attachment: Standards for Ground Leveling in the National Construction Ground Industry
Within 2m2, the gap is more than 3mm, the ground is uneven; within 2-3m2, the gap is >=5-10mm, which is seriously uneven; within 2m2, the gap is <= 3mm, and the ground is qualified.
In the selection of self-leveling raw materials also need special attention: there are many types of market, mainly divided into home improvement type (specification DP180), industrial type, high-strength commercial type, it is very important to choose the right raw materials.
Related Reading:
Some details of ground leveling requirements
What kind of ground needs leveling? Ground leveling is also divided into space
Leveling on the ground: easily overlooked places in home decoration
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