Semi dry and wet paving of artificial stone
When the flatness of the base course is poor and the tensile strength and shear strength of the base surface are insufficient to meet the requirements of hard bottom paving, semi dry and wet leveling mortar shall be used to pave while leveling.
The construction process of thin bottom method is similar to that of semi dry wet method. Because the base layer of thin bottom method has been solidified and mature and the humidity is low, it can avoid most of the quality problems of artificial stone paving caused by underground water vapor and high humidity of leveling layer. The construction is simple, convenient and safe.
The base course shall be leveled with 1:3 cement mortar, the flatness error shall be controlled within 3mm, and expansion joints shall be reserved according to the stone layout size. The base course of leveling treatment shall be dried for 5-7 days. Clean the leveled and dry base course ground, and check whether there are hollowing, delamination, cracking, firmness of the base surface and other problems. If there is any problem, it should be handled first.
If there is no problem with the base course, spray a small amount of water to evenly wet the ground (no visible water), and scrape the artificial stone with a toothed knife with a thickness of about 6 ~ 8mm on the base course.