Synergistic effect of mineral admixture and bio-carbonate fillers on the physico-mechanical properties of gypsum plaster

Properties of self-compacting mortars using blends of limestone powder, fly ash, and zeolite powder

“…Ahmadi et al [22] report 14%, 16%, 23%, 25% increase in compressive strength of concrete upon 5%, 10%, 15%, and 20% replacement of cement with ZP, respectively. The study of Sophia and Sakthieswaran [24] confirms a significant improvement in mechanical strength of plasters upon cement replacement with ZP. However, Najimi et al…”

“…Figure 7 shows that 20% cement replacement with LSP results in a similar compressive strength as Control SC mortar, at a constant water-cement ratio. LSP gives rise to the packing effect due to its smaller particle size and encourages precipitation of hydration products at nucleation sites probably located near abrasions [20,24]. The observed increase in compressive strength with the blends of the SCMs can be attributed to both the packing and pozzolanic effects of the corresponding SCMs and reduced water-binder ratio.…”

“…Zeolite has been used in binary and ternary blends of SCMs to improve certain properties such as mechanical properties [24,25,46], microstructure [24,26,47], durability [26], resistance against damage in reloading [48], bacterial activity in self-healing concrete [46], pumping ability and suitability to offshore structures [26], and rheological properties [27].…”

“…Many researchers have used either LSP [13][14][15] or FA [16][17][18][19] or ZP [17,[20][21][22] as the only SCM in cementitious systems while very few have used blends of these SCMs [2,3,23], especially with ZP [24][25][26][27]. Individual use of these SCMs may not provide an optimal response [28] especially in SCCs.…”

“…In contrast, the use of FA leads to a retardation effect, reduces early heat of hydration, decreases volume stability issues in different exposure conditions, reduces water demand and provides dense microstructure [2,28]. ZP lies somewhere between LSP and FA as the use of ZP alone requires a high amount of HRWRA to reach target spread due to its porous structure [18] and reduces heat of hydration and shrinkage by possibly acting as internal curing agent [20,24].…”