композиційні матеріали

This article presents a study of the use of composite materials in strengthening building structures. Materials consisting of two or more components or phases are called composite. Now modern composite materials open up new opportunities for design in all areas of production. The construction industry is no exception. Laminates, canvases, nets, rebars and ropes made of high-strength fibers of various origins are among the most widely used in construction at the moment.

The article examines studies on the reinforcement of reinforced concrete elements of cement -based fibro -based fibro systems (FRC) and polymers reinforcement fibro (FRP). Nowadays, the world economy, and with it, the construction industry is developing at a rapid pace. New materials, mechanization, construction equipment are emerging on the market. Due to this, modern structures impress with their shapes, scale and complexity of structures. The state of construction production in the country can be judged on the state of the economy of this country as a whole.

Ukraine's transition to an energy-efficient economy as part of its overall transformation to EU standards is a difficult but crucial challenge. The country's post-war recovery will involve modernizing the entire infrastructure in line with EU sustainable development standards.

The need for strengthening of existing structures has recently become topical. Composite materials due to their remarkable properties, possibility to adaptation to the design requirements and facilitation of restoration measures are widely used for strengthening. This article is focused on review of restoration approaches with the use of composite materials and specific features of their behavior under various impacts. Study includes analysis of recent studies in the area, identifying gaps of knowledge and perspectives for further research.

The main structures of modern buildings are using a RC constructions. Timely work on strengthening and restoration of building structures is very important in practice. There are many accumulations with many different ways and constructive methods of strengthening RC constructions in different conditions of application. This article describes the modern methods and innovative materials for the strengthening and repairing of RC structures.

За допомогою контактної нерівноважної низькотемпературної плазми одержані наночастинки срібла (AgНЧ) із застосуванням полівінілпіролідону (ПВП) як стабілізуючого агенту. Вивчено вплив концентрації ПВП на ефективність формування наночастинок срібла, їх середній розмір та стабільність. Встановлено, що одержані наночастинки срібла проявляють антибактеріальну активність проти двох штамів грам-бактерій. Одержано композитні гранули (AgНЧ-альгінат) з різною концентрацією ПВП для очищення води.

Властивості наповнених  полімерних композицій значною мірою залежать від природи і поверхневих властивостей наповнювачів, зокрема, базальтового волокна. Вперше показана можливість модифікації поверхні базальтового волокна комерційним полігексаметиленгуанідингідрохлоридом та некомерційними полідіетиленаміногуанідинами - апретами. Встановлена залежність крайового кута змочування та адгезійної міцності в системі "термопласт - волокно" від типу апрету. Визначено оптимальний тип апрету- полідіетиленаміногуанідин-карбонат.

This study aims to predict the sound transmission properties of composite layered plates structures in the lower frequency range. In present paper a novel procedure to derive the sound isolation parameters for layered plates is under discussion. This paper presents a new stress analysis method for the accurate determination of the detailed stress distributions in laminated plates subjected to cylindrical bending. Some approximate methods for the stress state predictions for laminated plates are presented here.