What is the reason for the bulging of floor tiles?

The reason for the expansion of floor tiles is generally because the cement sand used for paving floor tiles has a relatively large water content, and it is easier to expand with heat and contract with cold after a long time. The key is to mix wet sand with cement directly, and never add water. Just soak the tiles for 30 minutes before paving, even if the tiles are paved, seamless brick will not swell. Put your bulging bricks together, cut a line with salt with a cutting machine to reduce the size, and then stick it with glass glue.