沥青基础的开裂问题

The most common problem with asphalt tennis courts is cracking which is caused, in part, by asphalts natural tendency to shrink as it weathers and ages. In addition, asphalt loses its flexibility and becomes more brittle over time. Since outdoor courts are also exposed to weathering, including expansion and contraction caused by temperature extremes, cracking is inevitable. Asphalt tennis courts crack more quickly than asphalt roads and parking lots because tennis courts do not benefit from the compressive kneading generated by traffic which helps to keep the asphalt pliable and, thereby, delay cracking.

Premature or extensive cracking may be caused by poor asphalt mix, poor site conditions, poor design, or by poor construction. Quality design and construction may minimize or delay cracking but cannot completely eliminate it. Once cracks appear it may be impossible to repair their cause, but it is not impossible to repair the crack itself.

Including this successful new crack repair system in your estimate makes it slightly more expensive than repairing the cracks in a more conventional and ineffective manner. Most contractors simply install crack filler or put fiberglass fabric over the cracks. Almost without exception, both of these very common repair techniques will fail within one year. Whereas the ARMOR™ Crack Repair System has been working successfully at keeping cracks from reappearing for more than ten years now, even in cold climate regions.

三、球场水泥基础要求