| 1. | Field investigation includes traffic volume , axle loads , types , amount , and severity of pavement distress , measurement of deflection of pavement highway structure , and pavement sampling . recorded pavement distresses include ( but not limited to ) fatigure cracking ( alligator cracking ) , rutting , long structural cracking
路面调查工作包括交通量调查，轴载调查，路面损坏的类型、数量与严重程度的记录，路面结构的弯沉以及路面取样。 |
