It's too cold in winter, so I plan to install floor heating at home. If floor heating is installed, the ground is self-leveling with cement. Will it crack after heating? Does anyone know?

There will be cracks, and the way is to make them piece by piece or cover them with a layer of other materials. Cement self-leveling is a high-tech green product with high technology content and complicated technical links. It is a dry-mixed powder material composed of various active ingredients.

1, the surface is not covered in time after concrete pouring. In hot or windy weather, the surface free water evaporates too fast, and the volume of concrete shrinks sharply, leading to cracking.

2. When mixing concrete, the water-cement ratio is too large, the formwork and base are too dry, and the water absorption rate is high.

3. The concrete mixture ratio is unreasonable, and the cement dosage and sand ratio are too large.

Extended data:

Secondly, if the cracks are damaged locally, to find out the damage range, it is necessary to draw a right angle line around the ground damage, cut the ground along the line with a concrete cutter, cut the cushion layer and the surface layer, dig out the local soft soil layer, replace the qualified filling material, and tamp it in layers to make the surface layer thickness consistent with the surrounding area.

Finally, if there are not many cracks, the width is not large, and the cracks are stable, clean them up, rinse them with water, dry them wet, fill them with polymer cement slurry (107 glue: water: cement = 1: 4: 8), and compact them once after initial setting.