Recently, the south section of the rich road is changing the floor tiles on the sidewalk. Ms. Liu saw a special person sprinkling water on the paved road. Is it sprinkling water and dust, so why are some floor tiles not sprinkled?
The reporter came to the rich road and saw that the workers were busy with the construction. Some people used the iron to pick up the old floor tiles, and some were busy laying new floor tiles.
On the paved road, a middle-aged man picked up a watering can and sprinkled water on the road. The newly paved floor was not ash. Why did he sprinkle water? The reporter went to the front to find out that the water was sprayed to prevent the tiles from loosening.
The master explained that before laying the floor tiles, spread a layer of mortar mixed with sand and sand on the ground, and then lay a piece of floor tiles. Sprinkle water on it, and the water penetrates into the damp mortar through the brick joint. On the one hand, it settles well and on the other hand, it strengthens the viscosity.
Why do some pavement tiles have not been loosened when they are laid, but after the rain, the tiles begin to loosen, pedestrians walk on them, the tiles will be like seesaws, and the sewage will not be able to Splash on the shoes of pedestrians.
The master said that this phenomenon is that the construction workers cut corners, some use only yellow sand as a bedding layer, there is no cement at all, it is impossible to play a sticky joint, and some of the ratio of yellow sand to cement is not up to standard, too little cement It is. In addition, after the floor tiles were laid, there was no water sprinkling on them, and the underlying cushion was not real, and the rain would be loose.
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