International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

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Author: Lуubеn Lakov

  • DOMINANT TECHNOLOGIES IN “INDUSTRY 4.0”

    Heat-insulating lightweight concretes and composite materials on the basis of inorganic binders with application in construction

    • Lуubеn Lakov
    • Bojidar Jivov
    • Mihaela Aleksandrova
    • Stancho Yordanov
    • Krasimira Toncheva
    Industry 4.0, Vol. 8 (2023), Issue 2, pg(s) 47-51
    • Abstract
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    A general overview of a number of thermal insulation materials and products made on the basis of inorganic binders (mainly Portland cement) is presented. The technological methods of production, the main operational indicators and the application in construction of various heat-insulating and structural-heat-insulating lightweight concretes are examined. The structure of various cellular concretes (foam concretes and aerated concretes), composite materials and lightweight aggregate concrete was analyzed. The role of the origin, technological processing, characteristics and composition of different types of light additive materials for the formation of the final operational properties of the products has been traced.

  • TECHNOLOGIES

    Comparison of innovative collapsible ceramic hive and traditional non-separable hives made on the basis of natural plastic raw materials

    • Lуubеn Lakov
    • Bojidar Jivov
    • Todorka Lepkova
    • Krasimira Toncheva
    • Stancho Yordanov
    Machines. Technologies. Materials., Vol. 16 (2022), Issue 10, pg(s) 340-343
    • Abstract
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    An innovative collapsible frame hive was developed, consisting of structural elements made of technical ceramics containing thermal insulation air chambers. Experimental prototypes were prepared using the slip casting method and based on modified recipe compositions, prepared casting molding masses, original gypsum matrices and optimal heat treatment mode. A comparison was performed between the main operational characteristics of the experimental samples and the traditional non-separable hives which have existed throughout history and made primarily of various plant materials and natural plastic raw materials (clays).

  • TECHNOLOGIES

    Financial project for building a technological line and factory for the production of yellow pavers, tiles and other products

    • Krasimira Toncheva
    • Lуubеn Lakov
    • Bojidar Jivov
    • Todorka Lepkova
    Machines. Technologies. Materials., Vol. 16 (2022), Issue 9, pg(s) 307-314
    • Abstract
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    A financial project was presented for the construction of a technological line for the production of high-quality replicas of the socalled “yellow paving stones” and an additional assortment of products with different characteristics based on raw materials originating in Bulgaria. After many years of investigation in laboratory and semi-industrial conditions, polycomponent formulations and an original hightemperature technological regime for the preparation of functional and long-lasting silicate products have been developed. The planned technological approach is in accordance with the existing machine park and the qualification of the industrial production personnel, characteristic of the silicate industry. The main possibilities for the realization of the production are the full restoration of the street areas of the central historical part of Sofia and the construction of long-lasting and aesthetic pavements with a variety of functional purposes in different areas of the capital and other populated areas. The current applied development is oriented towards possible potential producers and investors and various specialists from the field of public infrastructure and cultural-historical heritage.

  • INNOVATION POLICY AND INNOVATION MANAGEMENT

    Financial project for construction of a plant for the production of granules, panels and plates of foam glass and small and large composite elements

    • Krasimira Toncheva
    • Lуubеn Lakov
    • Bojidar Jivov
    Innovations, Vol. 10 (2022), Issue 2, pg(s) 64-70
    • Abstract
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    A financial project has been prepared for the construction of a plant equipped with a technological line for the production of foam glass products. It is planned to build a warehouse for raw materials, a sector for preparation of materials, various production workshops for the manufacturing of foamed granules and pieces, a continuous tape or block of foam glass, various composite materials (thermal insulation and color decorative panels, various small and large composite elements, etc.), repair section and two warehouses for finished products. Approximate calculations have been made for the necessary raw materials, technical equipment, electricity, personnel and other costs for the realization and operation of the plant.

  • BUSINESS

    Project of an experimental plant for the production of plates and granules of foam glass and composite material on this basis

    • Krasimira Toncheva
    • Lуubеn Lakov
    • Bojidar Jivov
    Science. Business. Society., Vol. 5 (2020), Issue 3, pg(s) 104-107
    • Abstract
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    A conceptual design of a technological line for the production on the one hand of a continuous flat strip and block and on the other hand granules and pieces of foam glass, including a ware house for raw materials, a workshop for preparation of materials, workshops for foamed granules and a continuous flat strip of foam glass, workshop for composite elements semi O, P and slabs, repair section and warehouse for finished products is presented The necessary equipment and materials, building the technological line and functioning of the plant as a whole, are presented.

Congresses and conferences

  • VII International Scientific Conference
    "High Technologies. Business. Society"
    07.-10.03.2022 - Borovets, Bulgaria
  • XV International Conference for Young Researchers
    "Technical Sciences. Industrial Management"
    09.-12.03.2022 - Borovets, Bulgaria
  • XIX International Congress
    "Machinеs. Technolоgies. Materials"
    winter session
    09.-12.03.2022 - Borovets, Bulgaria
  • XXVIII International Scientific Technical Conference
    "Foundry"
    06.-08.04.2022 - Pleven, Bulgaria
  • X International Scientific Conference
    "Engineering. Technologies. Education. Safety"
    06.-09.06.2022 - Borovets, Bulgaria
  • XXX International Scientific Conference
    "trans&MOTAUTO"
    20.-23.06.2022 - Burgas, Bulgaria
  • VIII International Scientific Congress
    "Innovations"
    20.-23.06.2022 - Varna, Bulgaria
  • X International Scientific Congress
    "Agricultural Machinery"
    21.-25.06.2022 - Burgas, Bulgaria
  • VII International Scientific Conference
    "Industry 4.0"
    summer session
    22.-25.06.2022 - Varna, Bulgaria
  • VII International Scientific Conference
    "Conserving Soils and Water"
    24.-27.08.2022 - Borovets, Bulgaria
  • VIII International Scientific Conference
    "Materials Science. Non-Equilibrium Phase Transformations"
    05.-08.09.2022 - Varna, Bulgaria
  • XVII International Congress
    "Machines. Technologies. Materials"
    summer session
    07.-10.09.2022 - Varna, Bulgaria
  • VI International Scientific Conference on Security
    "Confsec"
    05.-08.12.2022 - Borovets, Bulgaria
  • VII International Scientific Conference
    "Industry 4.0"
    winter session
    07.-10.12.2022 - Borovets, Bulgaria
  • VI International Scientific Conference
    "Mathematical Modeling"
    07.-10.12.2022 - Borovets, Bulgaria

Scientific Technical Union of Mechanical Engineering "Industry-4.0"

108, Rakovski Str., 1000 Sofia, Bulgaria
tel. (+359 2) 987 72 90, tel./fax (+359 2) 986 22 40,
office@stumejournals.com