Microcracks in the cementitious matrix are difficult to detect and repair until they appear on the surface. The binder in the microcapsule can repair the internal microcracks in a short period of time, and shows good repair effect in improving the strength and pore structure of the cementitious matrix, but the repair effect is not good for secondary cracking and surface cracks. ...

A method is proposed for obtaining an effective fertilizer from organic animal waste – manure or dung – and hydrolytic lignin. The fertilizer is an odorless free-flowing powder, does not harm the environment and has a prolonged action. The prime cost of fertilizer is much less than the cost of imported analogues sold in our republic. In the production of fertilizer, only Belarusian ...

In this paper, a radar absorbing metamaterial structure is designed, which consists of an upper layer of resistance film and a bottom layer of metal base plate, and the middle dielectric layer is omitted. The thickness of the resistance film is 100 nm, and the thickness of the metal plate is 1mm. The calculation results of CST Microwave Studio 2021 electromagnetic simulation ...

The results of the analysis to determine the feasibility of developing technical solutions using ultrasonic exposure when working with asphalt granulate are presented. Ultrasonic action allows to increase the penetrating ability of regenerating additives and, as a result, to improve the quality of the asphalt concrete pavement.

Alumina production will produce a large amount of red mud wastewater every year, which will cause great harm to the surrounding environment. In this study, a solar evaporator using biochar as photothermal material for red mud wastewater treatment was designed. Driven by sunlight, the device can recover water from red mud wastewater and absorb harmful substances in wastewater. ...

The comparative analysis of Al2O3 coatings and effect of surface morphology on the wettability properties were discussed. It was shown that it is possible to obtain high hydrophilic parameters with a contact angle value up to 17–20° using high values of current density, anodizing time, and electrolyte temperature by adjusting the electrochemical conditions. It was seen that this ...

In this article there is a completed description of a calculation of a reinforced concrete construction with finite element modeling located in soil. The calculation was carried out on an electronic computer complex using software. Physical and mechanical properties of soil and reinforced concrete construction were taken into account.

Valuable elements in lithium-ion batteries is a very significant secondary resource. Based on the recovery and recycling of the spent all-solid-state lithium-ion batteries in the future, we explore extracting valuable lanthanum, zirconium, and lithium elements from the solid electrolyte tetragonal phase LLZO by the leaching with the dilute sulfuric, and then by precipitation ...

The technological methods and regimes to improve the electrical insulation strength of anodic Al2O3 in vias of double-sided alumina bases for potential use in power multichip modules were discussed. It was shown that after using of the appropriate technological approaches the breakdown voltages of the obtained test samples were up to ~6 kV on working surfaces without holes and ...

In the 21st century, the change of the international marine strategic situation provides both opportunities and challenges for China's strategy of building a powerful marine country. Against this background, China has implemented the strategy of the “21st Century Maritime Silk Road”. Focuses on the analysis of the achievements and challenges of China's “21st Century Maritime Silk ...