There are various methods for filling joints and laying stones, and suitable materials and techniques can be selected according to individual needs and actual situations. Common joint filling materials include cement mortar, tile adhesive, epoxy resin, joint filler, concrete, and stone fragments. The specific filling steps are as follows:
Firstly, clean the gaps between the ground paving stones to ensure that there are no debris or dust, so that the filling materials can be better combined. According to the selected material, mix the joint filling material and the required medium (such as water) in a certain proportion. For example, cement mortar needs to be mixed with cement and sand in proportion and mixed with water; Epoxy resin needs to be mixed with its A and B components in proportion.
Fill, use appropriate tools (such as knives, scrapers, or joint fillers) to evenly fill the mixed joint material into the gaps of the stone pavement. Pay attention to filling evenly to avoid gaps or repeated filling.

Curing and drying, after filling the joints, depending on the material, it may take a certain amount of time (usually 1 to 2 days) for the filling material to dry and solidify. It should be avoided that the moisture of the ground paving stone evaporates too quickly or is affected by external factors, which may cause the failure of the filling material.
Polishing treatment: After the sealing material is dried, a polishing machine or grinding head can be used to polish the ground, making the gaps smoother and more uniform, improving the anti slip and aesthetic properties of the ground.
It should be noted that when selecting joint filling materials, consideration should be given to the coordination between their color and the color of the ground paving stones, as well as the required environment and occasion. At the same time, ensuring that the gaps between the stone paving before filling are clean is a key step in ensuring the effectiveness of the filling.