I. Project Introduction Road construction requires a large amount of building stone materials, and their extraction is greatly restricted due to environmental protection concerns, leading to a shortage of roadstone materials; on the other hand, China has over 1.5 million kilometers of asphalt pavements on highways and other various grades of roads, generating up to 230 million tons of waste asphalt materials each year, which are not fully utilized. After more than a decade of research, this project has established leading technologies for non-destructive evaluation of existing pavement structures, design of recycled structural systems, and ambient temperature recycling materials, laying a solid foundation for the promotion of ambient temperature recycling at high levels on highways. 1. It was discovered that there are inert points on the pavement deflection basin, pioneering a non-destructive evaluation method, standard, and design method for existing pavement structures, and establishing a complete integrated design system for pavement recycling structures and materials. 2. The mechanism of old material recycling was discovered, and a new technology for ambient temperature recycling of emulsified asphalt was invented. Created international leading high-performance recycled material design theories, methods, and standards; 3. Studied various combinations of compaction processes, recommended suitable single-layer compaction thickness and overlay hot mix layer compaction process, ensuring the compaction and high performance of the recycled pavement structure. This project first elevated sporadic low-performance use of waste asphalt pavement materials to large-scale application of high-performance green pavement materials, forming a systematic theory and method. It represents a significant technical leap and breakthrough in the field of asphalt pavement recycling and is generally at an international leading level. II. Cooperation Content (1) Brief introduction of the main related technologies involved (mainly introduces the main technical content of this project and other supporting technologies required) The main technical contents involved in this project are as follows: (1) Non-destructive evaluation of asphalt pavement semi-rigid base layer. This project discovered inert points on the roadbed settlement basin. A complete pavement structure inversion method has been established, and a non-destructive evaluation standard for the damage condition of semi-rigid base layers has been proposed, solving the key problem in the design of pavement regeneration structures. (2) The normal temperature regeneration structure design method has constructed a complete system for the design of regenerated pavement structures, compiled design nomograms, and proposed six typical models of regenerated structures suitable for major repairs on roads of different levels, facilitating engineering applications. (3) Based on the 'secondary compaction' new mechanism of normal temperature regeneration of old pavement materials, this project has for the first time discovered that the temperature conduction from the overlying hot-mixed asphalt mixture causing an increase in the temperature of the regenerated material layer is the key mechanism for the regeneration of materials, laying a theoretical foundation for the design of new generation regenerated materials. (4) High-performance normal temperature regenerated material design method and design indicators This project has established a design method and complete standards for normal temperature regenerated mixtures considering the mechanisms of stimulated revival and secondary compaction. Methods for improving the performance of recycled mixtures have been provided, significantly enhancing the properties of ambient temperature recycled materials. (5) Compound Emulsion Asphalt Ambient Temperature Recycling New Technology This project has invented a compound recycling method using aromatic oil and rejuvenators, and further provided the optimal proportion design of the compound rejuvenator, effectively improving various aspects of ambient temperature recycled mixture performance, enabling it to be used at higher levels on highways. (6) Ambient Temperature Recycled Material Construction and Curing New Technology This study has introduced new construction and curing processes for recycled materials, greatly shortening the on-site curing time of recycled materials, accelerating construction progress, improving the compaction degree of recycled materials at the site, and ensuring their road performance. (II) Proposed Cooperation Regions and Partners (Mainly describes the regions where the project hopes to cooperate and the recipients) Cooperation Region: Not limited Partners: Highway construction, operation, and maintenance departments in various regions, pavement material enterprises. Road surface design units, construction units, etc. (III) Proposed Cooperation Model (Briefly introduce the future business model of the project and the cooperation mode desired to be carried out) Cooperation Model: Technical consulting or scientific research upgrade services. III. Cooperation Cases (If there are already demonstrations, applications, etc., they can be provided) Changjiu Expressway, Changtai Expressway, Changzhang Expressway, Inner Mongolia G65 Expressway, Shanghai G1501 Expressway, and other high-grade highway reconstruction and expansion projects.