What is silica oxide?
Silica Lymy is a substance that is used to improve the strength of concrete. It is produced during synthesis of silicon metal or ferrosilicone alloys, where a decrease in high -pure quartz at a high temperature in the electric furnace releases gas oxide. The gas reacts with oxygen and condenses in silica, a fine white powder substance composed mainly of silicon oxide. This substance must not be confused with porous silica oxide, also known as pyrogenic silica oxide, which has a different composition and is used to strengthen milk cocktails and colors. Adding the smoke of silica to concrete reduces the water content of the concrete and makes them less susceptible to corrosion caused by sea salts and chloride ions. This makes it particularly useful in structures exposed to water, such as dams or bridges.
It has been shown that adding the addition of smoke to a mixture of concrete reduces expansion and cracking due to alkaline-sill reactions (ASR). ASR usually occurs when hydroxide ions reactwith a silica and silicate gel and alkaline silicate, which flows into the porous spaces in concrete. The gel causes expansion and cracking, leading to possible structural failure.
Extremely fine texture of silica oxide gives it advantageous mechanical properties. Centon of silica is less permeable than concrete with unknown and can be used to support heavy loads. Sugar and other large buildings that exert a large amount of vertical pressure on their structural elements usually use high strength of concrete.
The silica concrete is mixed by adding a determined proportion to the cement in wet or dry form. The proportion of silica oxide in the final mixture of concrete is detonated at the level of the required power of the material. Stronger mixtures of silica oxide that could contain up to 15 percent of silica oxide are the crampsmore huddled than more common mixtures that contain 7-10 percent.
until the middle of the 70s. This practice caused environmental concerns that led to the landfilling of the substance. Since then, instructions have been developed to standardize physical quality, packaging and other properties for industrial use.