Many old basketball courts have been turned into new basketball courts, or converted into new basketball courts after repairs. Since the situation is different, they should be treated separately.

1. To remove the old field and build a new field, due to the cost of the new construction site, the old site should be completely removed, and the roller compaction should be started from the foundation, according to the new structure, and the overall construction should be carried out. Do not leave half the old ground as the foundation, and then do one half The new field foundation will eventually be a new plastic surface layer, which will cause cracks in the surface layer. The old basketball court must not be retained and the base should be expanded. Finally make a new plastic surface layer, which will cause cracks in the new surface.

2. The old asphalt concrete sites and old cement concrete sites with the same area should also be treated separately.

When there are many cracks in the old asphalt concrete site, the cracks should be properly treated to clean the impurities in the joints, and then penetrate into the bitumen mastic. The larger crushing sites should also be removed to fill in the new asphalt concrete. After the repair, clean the surface. ,Sprinkle a layer of sticky oil, and finally spread a layer of new asphalt concrete.

For the old cement concrete site, all the expansion joints in the original site shall be removed to remove the debris in the joints and fill in new expansion and contraction materials. It is better to spray the asphalt layer oil on the ground surface of the old cement concrete field. A non-woven cloth (geotextile) was applied to the expansion joints to prevent cracks in the seams from reflecting, and then a layer of asphalt concrete was applied.

3. When the old cement square brick basketball court and the old cement concrete square brick basketball structure are less than 10cm thick, it is best not to use a paving method to make a plastic basketball court because the old structure is too thin, once it is made into a new basketball court, the plastic surface There will also be cracks in the floors, and this has happened a lot.

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