Physicochemical Principles of CO₂ Sequestration in Building Materials Based on Nepheline Slime

Intensive Ways of Producing Carbonate Curing Building Materials Based on Lime Secondary Raw Materials

“…A significant reserve of raw materials in the production of building materials and products hardening due to carbon dioxide are various wastes and industrial waste products, which at certain technological processing can exhibit bindering properties and enter into chemical interaction with carbon dioxide, forming an artificial stone. As a result of numerous research studies [11][12][13][14][15], a number of kinds of the secondary raw materials possessing the essential potential for CО 2 binding have been revealed, scientific and technological bases for introduction of the received results in the industry have been developed [13][14][15][16], and moreover, pilot batches of the building products hardened in the environment of the raised concentration of CО 2 have been issued [13][14][15][16].…”

Sequestration of carbon dioxide into building products based on the dolomite binder of carbonate hardening

“…The pressing force of the samples was 2500 N. After squeezing the raw mix without removing the pressing force, the CGAM was supplied to the mold with СО 2 concentration of ~ 35% for 240-480 s. The cylinder samples removed from the mold were dried and tested. General view of carbonized samples before and after testing is presented in Figure 1 Carbonization as a way to sequester carbon dioxide into various building products has been intensively studied in the last decade [17][18][19][20]. It was found that the main factors affecting the speed and completeness of the passage of the reaction are the initial water content of the raw mix, the concentration of carbon dioxide and, to some extent, the conditions for forming the sample.…”

On the possibility of using lime dust for the production of building materials of forced carbonate hardening

“…The ratification of the final document of the conference was carried out by 186 countries in a short time, which indicates that the world community understands the seriousness of the consequences if these problems are further ignored. The intensification of scientific research has shown that the building materials industry is a very promising sector of the economy in addressing the issue of reducing carbon dioxide emissions into the atmosphere [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24].…”

“…According to these scientific trends, the most significant distinguishing feature that enhances the environmental aspects of construction is the use of building materials and products with low CO2 emissions, manufactured using technologies whose principal feature is the absorption and binding of technogenic carbon dioxide into insoluble compounds (sequestration). As a result of these studies, researchers have identified types of raw materials [9,10,[15][16][17][18][19][20][21], including secondary [11][12][13][14]22], which have significant potential for CO2 binding, developed scientific and technological foundations for the implementation of the results in industry [13][14][15]22], as well as released pilot batches of building products hardened in an environment of high concentration of CO2 [13,15]. Summarizing the results of the studies, it can be noted that the directions for reducing CO2 emissions in the building materials industry are identified; their high efficiency is justified, in terms of quantifying CO2 and obtaining a certain range of high-quality building products that harden due to forced carbonization.…”