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Rock asphalt has been widely used to improve the performance of asphalt concrete, owing to its cost efficiency and beneficial modification effect. However, the moisture and high-temperature effects interdependently determine the degradation of fatigue resistance of rock asphalt concrete, owing to the unique climatic summer conditions in most high-temperature regions of China (e.g. southeastern coastal and south regions). Accordingly, the water absorption characteristics of rock asphalt concrete at different temperatures were analysed. Based on this analysis, 75 groups of modified three-point bending fatigue tests were implemented to investigate the combined effect of moisture, high-temperature, and stress level on the fatigue life of rock asphalt concrete. The moisture, temperature, and stress level conditions significantly influence the fatigue resistance of rock asphalt concrete. Finally, fatigue equations considering moisture and stress level were established to predict the fatigue life of rock asphalt concrete at different temperatures. [ABSTRACT FROM AUTHOR]

The Ediacaran (ca. 635–541 Ma) was a critical period in Earth history, which saw a dramatic transformation in global biological, chemical and climatic conditions, making it one of the most intensively investigated time intervals worldwide. As the first mixed clastic–carbonate succession deposited on the Upper Yangtze Craton, the Ediacaran succession overlies Neoproterozoic continental rifts, and records a complex basin infill history. In this study, we focus on the tectonostratigraphic environment and basin infill process, integrating multiple data sets, including boreholes, outcrops, well correlations, seismic data, isopach maps and the spatial distribution of sedimentary facies. The Ediacaran System includes the Doushantuo Formation and overlying Dengying Formation which can be subdivided into four lithostratigraphic members (D1–D4). The Doushantuo Formation and D3 Member consist of mixed clastic–carbonate sediments, while carbonates predominate in the D1, D2 and D4 members. Intracratonic depressions and continental margin rifts dominated the Upper Yangtze area during the Ediacaran. During deposition of the Doushantuo Formation, the Upper Yangtze area contained a variety of environments, including terrigenous shorefaces, mixed tidal flats, lagoons, shelves, slopes and bathyal seas. A rimmed carbonate platform developed during deposition of the D1 and D2 members. The Deyang–Anyue Trough, which is related to post-rift subsidence in the intracratonic basin, began to develop in this interval. A relatively intense extension during deposition of the D3 Member resulted in intensification of intracratonic and continental margin rifting, creating distinct tidal flat, deep-water shelf, slope and bathyal environments. With the expansion of the Deyang–Anyue Trough during deposition of the D4 Member, the rimmed carbonate platform was divided into two segments. We suggest that the Deyang–Anyue Trough was a structurally controlled intracratonic rift-sag and likely arose from multiple episodes of rifting in the cratonic basement, as well as differential uplifting and exposure caused by the ongoing Tongwan Movement. Our model highlights the role of basement heritage on the structure and evolution of intracratonic rift-sag. [ABSTRACT FROM AUTHOR]