13 types of abnormal ground paving

Quick answer：

Abnormal ground paving refers to unconventional or unconventional materials or methods used for ground coverings. These may include materials like grass, gravel, wood chips, or recycled materials. The term '13 types' suggests a classification of these unconventional paving methods, but specific details are not provided. Such pavings are often used in landscaping, walkways, or playgrounds for aesthetic or environmental reasons.