April 27, 2021, the thesis defense of Ilkhom Gulomzhanovich Akbarov on the topic: "DEVELOPMENT OF COMPOSITIONS AND TECHNOLOGY OF OBTAINING MODIFIED COMPOSITE BITUMEN MATERIALS BASED ON LOCAL AND SECONDARY RAW MATERIALS, ON THE BASIS OF LOCAL AND SECONDARY RAW MATERIALS" By specialty :: 02.00.07 - Chemistry and technology of composite, paints and rubber materials, 09/05/05 - Building materials and products (technical sciences)