Wenliang Zhang

As a highly practical technique, grouting repair technology is widely used in the practical repair of highway diseases. Existing single indicator detection methods can well reflect certain characteristic indicators of roads, such as compaction and strength. However, the road performance after grouting often needs to be comprehensively evaluated from multiple perspectives, which is difficult to achieve through a single detection method. Therefore, this paper proposes a multi-index evaluation method that comprehensively considers the mechanical properties, uniformity, and compactness of the road after grouting repair. This method combines hierarchical analysis and entropy weight method, integrating subjective evaluation with objective reality, to assign weights to each evaluation index and obtain the weight ranking of relevant influencing factors in the evaluation index system. Based on these index and the combined assign weight method, a comprehensive evaluation model for asphalt pavement is constructed and demonstrated by cloud model step by step. Taking the reconstruction and expansion project of an actual expressway as an example, the grouting effect is evaluated by the proposed model. After that, the actual excavation situation of the expressway show that the evaluation results are closer to the actual performance. The transition from qualitative and empirical evaluation of grouting repair effect to scientific and semi-quantitative evaluation has been initially achieved. The evaluation model for grouting effect based on the combined weighting method-cloud model can accurately, and effectively evaluate the performance of the expressway after grouting repair. Received: 9.5.2024 Received in revised form: 25.7.2025 Accepted: 30.8.2025