Eggshell as a fine aggregate replacer with silica fume and fly ash addition in concrete: A sustainable approach

Recycled polyester filled with eggshells waste-based nano CaCO3: thermo-mechanical and flame-retardant features

“…Brown eggshell waste was used as the source of the CaCO 3 filler particles since it was reported that the selected brown eggshell waste has a higher content of CaCO 3 than other types. 43,44 Methyl ethyl ketone peroxide (Singapore Highpolymer) was used as the catalyst. These materials were used as received, except the eggshell waste, which was subjected to water purification as mentioned hereunder.…”

Properties of Sustainable Concrete Consisting Crushed Eggshell Waste as Fine Aggregate Replacement

“…The use of crushed eggshell which is finer than sand increases the water requirement in the mix resulting in a stiffer mixture. Based on Hakeem et al, [32], the utilization of eggshells in the casting process results in the substantial absorption of water, which subsequently reduces the workability of the concrete. Thus, the integration of crushed eggshells in larger quantities results in a reduction in the mix workability.…”

An Approach to Mixture Design and Cost Analysis for Cement Pastes Composed of Class C Fly Ashes for Better Sustainable Construction

“…It is the only constituent in the paste volume that coats concrete [8][9][10][11]. There is now growing awareness in the construction sector that the use of traditional Portland cement concrete mixtures is unsustainable [12][13][14][15]: manufacturing of one ton of Portland cement is responsible for the release of about one ton of carbon dioxide into the atmospherethe major greenhouse gas implicated in human-made climate changes [14,[16][17][18]-and requires 1.6 tons of raw materials (mainly clay and limestone) [4,19,20]. Cement is also one of the most expensive components [4,18,[20][21][22].…”

“…Field applications and laboratory research have revealed that the workability, placement, lower permeability, and almost all other durability features of HVFA composites are better than those of conventional Portland cement composites [12,16,17,33,39,44,52,55].…”