Large volumes of carbonate breccia occur in the late syn-rift and early post-rift deposits of the Billefjorden Trough, Central Spitsbergen. Breccias are developed throughout the Moscovian Minkinfjellet Formation and in basal parts of the Kazimovian Wordiekammen Formation. Breccias can be divided into two categories: (i) thick, cross-cutting breccia-bodies up to 200 m thick that are associated w...

Carbonate cements, such as calcite, dolomite, ferrocalcite and ankerite, play important roles in the formation of pores in sandstones: precipitation of carbonate cements modifies pores and inhibits compaction, while dissolution creates secondary pores. This work proposed a precipitation-dissolution model for carbonate cements-CO2-H2O system by means of ion equilibrium concentration ([M2+], M = ...

The article is devoted to the study of effect lime kiln dust (LKD) on properties concrete mixtures and using Portland cement fly ash. A possible mechanism for formation structure cement–ash paste with addition LKD analyzed in detail. positive hydration (an increase content water by 40.50%) due an alkalinity shown. Using method experiment mathematical planning, experimental–statistical polynomia...

The production of cement accounts for 5 to 7% carbon dioxide emissions in the world, and its broad-scale use contributes climate imbalance. As a solution, biotechnology enables cultivation bacteria fungi synthesis calcium carbonate as one main constituents cement. Through biomineralization, which is initial driving force compounds compatible with concrete, crystallization, these can be delivere...

Light-burned MgO cement has a lower calcination temperature than ordinary Portland cement. It been widely studied as measure to reduce carbon dioxide because of its property absorbing during curing. This study investigated the effects on physical properties light hydrated magnesium carbonate and calcined in moisture CO2 at 25 °C 60 °C. The crystal size light-burned increased with increasing tem...