Availability of tuffs from northeast of Turkey as natural pozzolan on cement, some chemical and mechanical relationships

Utilization of industrial waste products as pozzolanic material in cemented paste backfill of high sulphide mill tailings

“…In this regard, SF showed the highest pozzolanic activity with its reactive silica content of 88.18% while GBFS had the lowest reactive silica content (37.98%) and activity index of only 70% (Tables 2 and 3). Cavdar and Yetgin [36] also noted that the pozzolanic activity decreased with an increase in Al 2 O 3 , Fe 2 O 3 , MgO and K 2 O contents of natu- Table 3 Chemical and mechanical properties of the artificial pozzolans compared with ASTM C 618 [32].…”

Characterization of Algerian reservoir sludges for use as active additions in cement: New pozzolans for eco-cement manufacture

“…Efforts in this respect have been ongoing for a number of years due to commitments under the Kyoto Protocol to cut greenhouse gas emissions, in particular CO 2 . In this context, the use of supplementary cementing materials (natural and waste) is currently a priority research line [1][2][3]. Mineral additions are commonly employed in the cement industry [4][5][6] and their use has increased in recent decades thanks to their scientific, technical, environmental and thermal benefits [7][8][9][10][11][12][13][14].…”

Utilization of granulated marble wastes and waste bricks as mineral admixture in cemented paste backfill of sulphide-rich tailings

“…This is consistent with the current findings in this study. Çavdar and Yetgin [47] also noted that the pozzolanic activity decreased with an increase in Al 2 O 3 , Fe 2 O 3 , MgO and K 2 O contents of pozzolanic materials. However, it appears to extremely difficult to account further for the interconnection of pozzolanic activity with these phases present due to the variation in the chemical composition of the waste materials.…”