Unascertained Measurement Evaluation on Maintenance Quality of Highway Pavement

Unascertained measurement theory (UMT) is used to create an evaluation method to determine the condition of cement concrete pavement (CCP). The proposed method allows for composite evaluation of the CCP that is consistent with the actual condition of the CCP. The resulting measurement model is designed to strictly adhere to UMT, the measurement functions are rigorously constructed, and a confidence criterion is introduced due to the ordered division the evaluation space. This paper also defines a method to determine index weight using similar weight by similar figures that provides an objective standard and avoids using the subjective opinions of experts when defining index weight. The index weight instead reflects the relative importance of the index in assessing of pavement maintenance quality. The proposed method is explained in detail by means of an example to encourage its use.