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Fiber-modified asphalt mixture has been the focus in functional pavement materials because of its excellent mechanical and self-healing performance. In this paper, an indirect tensile fatigue test was conducted to study the fatigue-healing performance of fiber-modified asphalt mixtures under different fatigue damage degrees and influencing factors, and the optimal timing of healing was determined based on the degree of fatigue damage. According to the results, due to the rough surface and microwave-absorbing ability of fibers, fiber-modified asphalt mixtures exhibit significantly higher fatigue-healing performance than plain asphalt mixtures. Under the given experimental conditions, the fatigue life of fiber-modified asphalt mixtures can up to three times higher than ordinary asphalt mixtures. Although the enhancement effect of fibers on the fatigue-healing performance of the mixture decreases with the increasing fatigue test repetitions, when the healing timing is 10% of fatigue damage, the fatigue life of the fiber-modified asphalt mixtures after five repetitions is almost equivalent to its initial fatigue life. According to a comprehensive evaluation of the fatigue-healing performance of two fiber-modified asphalt mixtures, asphalt mixture with steel wool additive is considered to be a more suitable material for self-healing pavement applications. [ABSTRACT FROM AUTHOR]

Objective: To investigate the clinical and pathological features, treatment, prognostic and its influence factors of granulosa cell tumor of head and neck. Methods: The clinical medical records of 12 patients with head and neck granulosa cell tumor confirmed by pathology for diagnosis and treatment in Beijing Tongren Hospital affiliated to Capital Medical University were reviewed and collected. Results: The follow-up durations were 4-57 months, with a median of 23 months. The origination of twelve cases were reviewed: 3 cases of the vocal cords, 2 cases of the retroannular region, 1 cases of the ventricular bands, 1 cases of the interarytenoid region, 1 cases of the paraglottic space, 1 cases of the epiglottis, 1 cases of the soft palate, 1 cases of the ventricle of larynx, 1 cases of the trapezius muscle. All 12 patients were undergoing surgical treatment in our hospital, including one who had postoperative adjuvant radiotherapy after second operation. Conclusion: Granulosa cell tumor occurs in the head and neck, usually a benign tumor with diverse morphology, and its diagnosis is mainly based on tumor histopathological examination. Surgical local excision is used in most cases, especially minimally invasive surgery is recommended, with lower postoperative recurrence rate and better prognosis., Competing Interests: The authors of this article and the planning committee members and staff have no relevant financial relationships with commercial interests to disclose., (Copyright© by the Editorial Department of Journal of Clinical Otorhinolaryngology Head and Neck Surgery.)