What are the causes of wall cement cracking?

According to the master's construction experience, cracks can be divided into structural cracks and turtle cracks. Structural cracks are horizontal or vertical extension lines, which are the problems of the wall itself. If the construction is too thick, turtle cracks will also appear during the drying process. If it is normal to scrape a single batch within 2mm, it is the product itself. In this way, it is best to scrape the whole wall in batches with special products for caulking, and then scrape the wall in batches with stickers, which is a common method in the market. Generally, the self-cracking of cement-based products will be obvious because of its high strength, but the performance will be improved after adding sand and gravel aggregate. Good mortar products can be scraped 2cm thick in a single batch without cracking. Turtle cracks in materials can be avoided, but structural cracks are irresistible. Pay attention to the thickness of scraping! At the same time, we should pay attention to the humidity of the construction environment, sometimes drying too fast is easy to cause cracks.