High-Strength Glass-Ceramic Material with Low Temperature Formation

Abstract

Prospects for development of glass-ceramic materials on the lithium aluminosilicates base in order to increase the reliability of armor protection elements have been analyzed. Compositions of lithium aluminosilicate glasses with low content of lithium oxide have been developed, spodumene glass-ceramic materials were obtained on their base in conditions of low-temperature thermal treatment. Formation of structure of glass-ceramic materials based on model glasses after thermal treatment has been investigated and the influence of phase composition on mechanical properties has been established. It was determined that the developed glass-ceramic materials are feasible for the application against the action of high-energy munitions with significant penetrating ability, especially when used in combination with ceramic elements.

Synthesis and Study of Properties of Geopolymer Materials Developed Using Local Natural Raw Materials and Industrial Waste

“…Geopolymer materials were prepared as follows: granulated blast-furnace slag and modified shale, mudstone, or clay in a ratio of 80:20, were milled together in a laboratory ball mill to a specific surface area of 8000-10000 g/cm 2 . Dry substances were added to the resulting powder in a certain amount: NaOH or Na 2 CO 3 , or Na 2 SiO 3 , or a mixture thereof, which were well mixed for 5 min.…”

“…A number of researchers around the world have taken numerous efforts, trying to identify the possibility of applying global modern technologies, considering overriding values and principles of maintaining a clean environment. [1][2][3][4] The increase in the consumption of cement/ concrete as the main building material is due to the rapid growth of the world population in the late 20th and early 21st centuries. Despite the uniqueness of ordinary Portland cement (OPC), its production is characterized by several negative properties: high consumption of energy resources and raw materials, as well as high carbon dioxide emissions (due to the decarbonization of limestone).…”