The study of properties and behavior of self compacting concrete containing Electric Arc Furnace Slag (EAFS) as aggregate

Experimental Study on the Workability and Stability of Steel Slag Self-Compacting Concrete

“…The segregation resistance is often considered as the index of stability of SCC, which also can be classified as static stability and dynamic stability. At present, the evaluation and test methods of the workability of SCC mainly includes a slump flow (SF) test incorporating slump flow time (T500) measurements [13][14][15][16][17][18][19][20][21][22][23][24][25][26], a V-funnel test [14,15,17,[19][20][21][22]24,26], a L-box test [13,15,19,21,23,24,26], a U-shape meter test [14,17,22], and a J-ring test [15][16][17][18][19]24,25], etc. Stability tests conducted for SCC mixture involved a sieve analysis test [15,17,20,25], flow table test [27], segregation probe test [20], and static settlement column test…”

“…In recent years, quite a few researchers have begun to explore the application of steel slag in the preparation of SCC [20][21][22][23][24][25][26]. Sheen et al [20] developed SCC containing stainless steel oxidizing slag (SSOS, partial substitution of fine and coarse aggregate) and stainless steel reducing slag (SSRS, partial substitution of cement).…”

“…Results showed that the stainless steel slag-based SCC can accelerate the hardening process, the compressive strength of SCC prepared with SSOS replacement in full exhibits slightly better or at least similar results to that of the control while potentially volumetric instability. Santamaría et al [21,23], investigated the mix design, in-fresh and hardened properties of SCC incorporating electric arc-furnace steelmaking slag as aggregate, and concluded that it is possible to prepare SCC using electric arcfurnace slag as coarse and fine aggregate, using appropriate doses and compatible chemical admixtures. Hisham [22] investigated the effect of steel slag replacing natural aggregate on SCC, and the slump flow test, V-shaped funnel test, column segregation test, sieve analysis test, segregation probe test and U-shaped box test were used to comprehensively evaluate the influence.…”

“…Moreover, it is not enough to encourage the use of a steel slag in the construction industry without misgivings or concerns if the technical opinion is not supported by sufficient characterization and performance testing [28]. Analyzing the aforementioned research on the use of steel slag in SCC, it found that the steel slag was mainly used to replaces the coarse aggregate [22,26] or both coarse and fine aggregate [20,21,23]. Meanwhile, the substitution rate is relatively high, for instance, all coarse aggregate was replaced [21][22][23]26], the substitution rate is of 0%, 50%, 100% for both coarse and fine aggregates [20].…”

“…Analyzing the aforementioned research on the use of steel slag in SCC, it found that the steel slag was mainly used to replaces the coarse aggregate [22,26] or both coarse and fine aggregate [20,21,23]. Meanwhile, the substitution rate is relatively high, for instance, all coarse aggregate was replaced [21][22][23]26], the substitution rate is of 0%, 50%, 100% for both coarse and fine aggregates [20]. The steel slag was also used as powder replacing the cement (fixed substitution rate of 30%) [25], as a fine aggregate (substitution rate is 0, 40%, 60%, 80%) together with the glass powder [24].…”