Simple methods to estimate the influence of limestone fillers on reaction and property evolution in cementitious materials

Development of an eco-friendly Ultra-High Performance Concrete (UHPC) with efficient cement and mineral admixtures uses

“…On the other hand, some investigations [32][33][34] showed that, during the hydration process of cement with LP, tri-calcium aluminate (C 3 A) can react with calcium carbonate to form both high-and low carbonate forms of calcium carboaluminate (CCA) in much the same manner as C 3 A reacts with calcium sulfate to form high-and low-sulfate forms of calcium sulpoaluminate (CSA). Furthermore, the reaction of LP largely depends on its fineness, which can be demonstrated by the phenomenon that the LP with d 50 of about 0.7 lm could effectively enhance the heat flow of cement during the hydration process [35]. Although a significant amount of investigations regarding the effect of mineral admixtures on the physical and chemical characteristics of mortar or concrete can be easily found, they all focus only on NSC, in which the water to binder ratio is relatively high and very limited SP dosage is utilized.…”

Assessing the chemical involvement of limestone powder in sodium carbonate activated slag

“…As a supplementary material, limestone powder (LP) has been widely applied in Portland cement based building materials because of its low price and good performance [8][9][10][11][12]. The effect of LP on the hydration of cement has been intensively investigated, ranging from the filler effect to the chemical involvement in cement hydration: (1) inert filler acting as nuclei sites; (2) accelerating the hydration of C 3 S [13,14] and (3) reacting with C 3 A forming calcium carboaluminates [14][15][16].…”

Micromechanical Modeling for Material Design of Durable Infrastructural Materials: The Influence of Aggregate and Matrix Modification on Elastic Behavior of Mortars

“…A sufficiently large (4.15 mm × 4.15 mm) representative element area (REA) has been considered for analysis. The virtual random periodic microstructure is generated using a microstructural stochastic packing algorithm (Kumar et al, 2013;Meier, Kuhl, & Steinmann, 2008;Torquato, 2013). This algorithm requires the particle size distribution (PSD) and the volume fraction of particles as inputs and it packs the circular inclusions with an interface layer of predefined thickness around them inside a REA of 4.15 mm × 4.15 mm.…”