Effect of Nanosized Mineral Additives on Strengthening and Corrosion Resistance of Cementing Mortars
Abstract
The key objective of this work is to evaluate the use of nanosized mineral additives in the form of bentonite and silica on the resistance of cement mortars to external influences, including corrosion and vibration effects, as well as thermal effects comparable to operating conditions. Interest in this research topic is primarily due to the possibility of creating highly effective zonal insulation with high strength and resistance to degradation when interacting with aggressive environments or exposed to high temperatures. During the tests, factors were established to inhibit degradation mechanisms when exposed to aggressive environments, as well as in the case of vibration strength and thermal aging tests, due to the influence of variations in the concentration of stabilizing mineral additives. It has been determined that the addition of stabilizing mineral additives leads to an increase in the stability of strength properties to external influences, including aggressive environments and vibrations. During tests of resistance to thermal aging and thermal stability of cementing mortars, it was determined that the addition of stabilizing mineral additives leads to an increase in stability to high-temperature degradation of strength properties, as well as a decrease in the rate of softening.