1. Prevent the damage caused by the change of pavement temperature: Cutting joints can relieve the stress caused by thermal expansion and cold contraction when the pavement temperature changes, and reduce the probability of pavement damage.
2. Improve the drainage capacity of roads: slotting helps to eliminate rainwater and stagnant water, improve the drainage capacity of roads and prevent traffic accidents caused by stagnant water.
3. Road expansion: Cutting clearance can be used to deal with road expansion. When the temperature change causes linear expansion or contraction of the pavement, the cutting gap can provide enough space to avoid cracking and damage of the pavement.
4. Improve driving comfort: kerfing can reduce the noise and vibration of the road surface and improve driving comfort.
However, it should be noted that different roads and use environments may have different requirements and specifications. Therefore, under specific circumstances, it is best to consult professional road engineers or relevant departments to ensure that road construction meets local specifications and requirements.