{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T01:18:31Z","timestamp":1760059111384,"version":"build-2065373602"},"reference-count":51,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2025,5,20]],"date-time":"2025-05-20T00:00:00Z","timestamp":1747699200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["52209141","ZR2024ME065"],"award-info":[{"award-number":["52209141","ZR2024ME065"]}]},{"name":"the Shandong Provincial Natural Science Foundation","award":["52209141","ZR2024ME065"],"award-info":[{"award-number":["52209141","ZR2024ME065"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Filled joints are widely found in natural rock masses and are one of the main factors causing rock mass engineering instability. The use of bolts can effectively control the shear slip of filled joints, research on bolts filled joints in the filling degree, and other key parameters of the influence of the law, to ensure the stability of the engineering rock body is of great significance. This paper presents shear experiments on bolted filled joints of Basalt Fiber-Reinforced Polymer (BFRP) materials with different joint roughness and filling degrees, while acoustic emission technology monitors the shear failure process of the specimens. The results show that the peak shear strength decreases with the increase in filling degree, and the peak shear strength decreases by 23.9% when the filling degree changes from 0 to 2.0 at 4 MPa and J2 conditions, while the normal stress, the Joint Roughness Coefficient (JRC) and the peak shear strength both show a positive correlation. The normal deformation of bolted filled joints exhibits three distinct evolutionary patterns depending on the filling degree, while both JRC and normal stress significantly influence the magnitude of shear dilatancy-shrinkage deformation. The shear resistance of BFRP bolts is mainly reflected in the post-peak plastic stage, and some of the fibers break during its shear deformation to form controlled yielding, with vertical and horizontal deformation controlled within 15.5~22.3 mm and 4.7~6.9 mm, respectively. The Acoustic Emission (AE) results show that the AE events are mainly in the post-peak plasticity stage, and the proportion is about the sum of the proportion of the other two phases, and this proportion increases with the increase in the filling degree.<\/jats:p>","DOI":"10.3390\/ma18102393","type":"journal-article","created":{"date-parts":[[2025,5,20]],"date-time":"2025-05-20T11:50:31Z","timestamp":1747741831000},"page":"2393","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Experimental Study on Shear Characteristics of Filled Joints Anchored by Basalt Fiber-Reinforced Polymer Materials"],"prefix":"10.3390","volume":"18","author":[{"given":"Hengjie","family":"Luan","sequence":"first","affiliation":[{"name":"State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province, Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China"},{"name":"Academician (Expert) Workstation, Inner Mongolia Shanghaimiao Mining Co., Ltd., Ordos 016299, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qingzhai","family":"Shi","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province, Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China"},{"name":"Academician (Expert) Workstation, Inner Mongolia Shanghaimiao Mining Co., Ltd., Ordos 016299, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9098-9999","authenticated-orcid":false,"given":"Changsheng","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province, Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China"},{"name":"Academician (Expert) Workstation, Inner Mongolia Shanghaimiao Mining Co., Ltd., Ordos 016299, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yujing","family":"Jiang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province, Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China"},{"name":"Academician (Expert) Workstation, Inner Mongolia Shanghaimiao Mining Co., Ltd., Ordos 016299, China"},{"name":"Graduate School of Engineering, Nagasaki University, Nagasaki 852-8521, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sunhao","family":"Zhang","sequence":"additional","affiliation":[{"name":"Graduate School of Engineering, Nagasaki University, Nagasaki 852-8521, Japan"},{"name":"School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jianrong","family":"Liu","sequence":"additional","affiliation":[{"name":"Academician (Expert) Workstation, Inner Mongolia Shanghaimiao Mining Co., Ltd., Ordos 016299, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kun","family":"Liu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province, Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China"},{"name":"Academician (Expert) Workstation, Inner Mongolia Shanghaimiao Mining Co., Ltd., Ordos 016299, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,5,20]]},"reference":[{"key":"ref_1","first-page":"2668","article-title":"Deformation characteristics and stability control of soft coal-rock mining roadway in thin coal seam","volume":"43","author":"Yu","year":"2018","journal-title":"J. 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