International Science Community Association International Research Journal of Environmental Sciences 15 4 2026 10 22 Investigation of the Environmental Efficiency and Thermal Insulation Properties of the Ak-7 Polymer-Mineral Composite Coating Based on Basalt Fiber and Expanded Vermiculite 101 105 EN Sirojiddin Muradov 1 Karshi state technical university, Karshi, Uzbekistan Dubey Arti 1 Department of Chemistry, VIVA College Virar (W), Maharashtra, India KANSOLE and Laboratory of Geosciences and Environment (LaGE) Michelline Marie Regina 1 University Yembila Abdoulaye Toguyeni, P.O 54 Fada N' Gourma, Burkina Faso University Joseph KI-ZERBO 2 Multidisciplinary Laboratory for Engineering Science Research, Polytechnic School of Ouagadougou (EPO), 18 PO 234 Ouaga 18, Burkina Faso P.O 7021 3 University Yembila Abdoulaye Toguyeni, P.O 54 Fada N' Gourma, Burkina Faso Ouagadougou 4 Burkina Faso 5 BEIDARI Mohamed 6 KIMA Adama 7 Kumar Brinder 1 Department of Zoology, GGM Science College Jammu, J&K (UT), India Yadav Surender Singh 1 Department of Economics, Government College, Kanina (Mahendergarh), Haryana, India Narayan Laxmi 2 Department of Economics, Government College, Mahendergarh, Haryana, India Musajonov Mukhammadrasul 1 Tashkent State Transport University, Temiryo‘lchilar Street 1, Tashkent, 100167, Uzbekistan Ibadullaev Ahmadjon 2 Tashkent State Transport University, Temiryo‘lchilar Street 1, Tashkent, 100167, Uzbekistan Babayev Askar 3 Tashkent State Transport University, Temiryo‘lchilar Street 1, Tashkent, 100167, Uzbekistan Chorshanbiev Umar 4 Tashkent State Transport University, Temiryo‘lchilar Street 1, Tashkent, 100167, Uzbekistan Souley HAROUNA 1 Department of Civil Engineering, School of Mines, Industry and Geology of Niamey (EMIG), Niamey, Niger Abdourazakou MAMAN HASSAN 2 Department of Mines-Geology, School of Mines, Industry and Geology of Niamey (EMIG), Niamey, Niger IBRAHIM ELHADJI DAOU 3 Department of Mining Engineering and Environment, School of Mines, Industry and Geology of Niamey (EMIG), Niamey, Niger Chékaraou Mahamane Moustapha Sanda 4 Djibo Hamani University of Tahoua, Faculty of Education Sciences, Department of Discipline Didactics, Tahoua-Niger Mansour Badamassi Kadri Mahaman 5 Dept. of Geological and Environmental Sciences, Faculty of Sciences and Techniques, André Salifou University of Zinder (UAS), Zinder, Niger Laouali Idi Karimou 6 Department of SVT, Abdou Moumouni University, Higher Normal School, Niamey, Niger Adama BOUBACAR AMADOU 7 Department of Mines-Geology, School of Mines, Industry and Geology of Niamey (EMIG), Niamey, Niger Usmanovich Samadov Alisher 1 Department of Engineering Communication, Tashkent University of Architecture and Civil Engineering, Tashkent, Uzbekistan qizi Abdusamiyeva Lobarkhon Nomonjon 2 Department of Mining, Almalyk State Technical Institute, Almalyk, Uzbekistan Bakhodirovna Khojimuratova Khilola 3 Department of Mining, Almalyk State Technical Institute, Almalyk, Uzbekistan Khikmatullayevich Ibragimov Umidjon 1 Karshi state technical university, Karshi, Uzbekistan Rubenovich Avanesov Tigran 2 Karshi state technical university, Karshi, Uzbekistan Ubaydullayevna Mirzayorova Sevara 3 Karshi state technical university, Karshi, Uzbekistan Soy Vladimir 1 Department of Construction of Buildings and Industrial Structures, Tashkent State Transport University, Tashkent, Uzbekistan Nuriddinova Gavkhar 2 Department of Construction of Buildings and Industrial Structures, Tashkent State Transport University, Tashkent, Uzbekistan Senanou GBAFA 1 Laboratory of Structure and Materials Mechanics: University of Lome, Togo and Laboratory of Geoscience water and environment: University of Lome, Togo Sena APEKE 2 Laboratory of Research in Engineering Science: University of Lome, Togo Kokou WOTODZO 3 Laboratory of Structure and Materials Mechanics: University of Lome, Togo Ibragimovich Gulyamov Yashnar 1 Academy of the Ministry of Emergency, Situations of the Republic of Uzbekistan, Tashkent, Uzbekistan > Research Paper 2026 9 22 2026 10 22 This study is devoted to evaluating the functional properties of the Ak-7 polymer-mineral composite coating based on basalt fiber and expanded vermiculite, with the aim of improving the energy efficiency and fire safety of buildings and structures, as well as developing environmentally promising construction materials. The composite formulation consisted of acrylic-styrene copolymer (20.98%), expanded vermiculite (39.73%), calcium carbonate (13.39%), basalt fiber (7.14%), and polyvinyl alcohol (18.76%). The thermophysical properties of the material were evaluated using an XND-2-3030C laboratory apparatus, its mechanical properties were assessed through flexural strength measurements, and its resistance to combustion was determined based on the limiting oxygen index (LOI). According to the experimental results, the thermal conductivity coefficient of the Ak-7 (40%) sample was 0.090575 W/(m•K), which was 39.7% lower than that of the sample containing 30% mineral filler. The flexural strength of the base composition was 9.272 MPa, while its limiting oxygen index reached 38.5%. The porous mineral structure of expanded vermiculite provides significant potential for limiting heat transfer, whereas the reinforcing properties of basalt fiber contribute to maintaining the mechanical integrity of the composite. The thermal stability and potential environmental advantages of basalt fiber compared with certain glass fiber reinforcing materials were evaluated based on scientific literature. The obtained results indicate that the Ak-7 composite coating represents a promising solution for reducing heat loss in buildings, promoting the efficient use of energy resources, and developing multifunctional protective materials aimed at improving fire safety. Copyright@ International Science Community Association