Innovative usages of stainless steel slags in developing self-compacting concrete

Sheen, Yeong-Nain; Le, Duc-Hien; Sun, Tao

doi:10.1016/j.conbuildmat.2015.10.079

Cited by 71 publications

(31 citation statements)

References 22 publications

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“…The use of EAFS in SCC is a challenge and very few studies have been done to date, mainly due to a decrease in flowability, also due to intergranular friction and a slight increase in density, although it has been possible to obtain stronger concretes than conventional ones [31], always using a significant amount of superplasticizer additive. Recently, Santamaría et al [32,33] have demonstrated the feasibility of manufacturing SCC using EAFS as both coarse and fine, obtaining consistency classes of S4 and SF2 and reasonably good mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

High Performance Self-Compacting Concrete with Electric Arc Furnace Slag Aggregate and Cupola Slag Powder

et al. 2020

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The development of self-compacting concretes with electric arc furnace slags is a novelty in the field of materials and the production of high-performance concretes with these characteristics is a further achievement. To obtain these high-strength, low-permeability concretes, steel slag aggregates and cupola slag powder are used. To prove the effectiveness of these concretes, they are compared with control concretes that use diabase aggregates, fly ash, and limestone supplementary cementitious materials (SCMs, also called fillers) and intermediate mix proportions. The high density SCMs give the fresh concrete self-compacting thixotropy using high-density aggregates with no segregation. Moreover, the temporal evolution of the mechanical properties of mortars and concretes shows pozzolanic reactions for the cupola slag. The fulfillment of the demands in terms of stability, flowability, and mechanical properties required for this type of concrete, and the savings of natural resources derived from the valorization of waste, make these sustainable concretes a viable option for countless applications in civil engineering.

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Section: Introductionmentioning

confidence: 99%

High Performance Self-Compacting Concrete with Electric Arc Furnace Slag Aggregate and Cupola Slag Powder

et al. 2020

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“…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…”

Section: Introductionmentioning

confidence: 99%

“…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.…”

Section: Introductionmentioning

confidence: 99%

“…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].…”

Section: Introductionmentioning

confidence: 99%

“…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].…”

Section: Introductionmentioning

confidence: 99%

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

Pan¹,

Chen

et al. 2020

Applied Sciences

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Featured Application: Steel slag self-compacting concrete (SSCC) with relatively ideal workability was prepared by substituting steel slag for natural fine aggregate to realize solid waste resource utilization. It is beneficial to solve the problems of steel slag abandonment, land occupation, environment pollution and low utilization rate, and realize utilization of a large amount with low-energy consumption for traditional material saving and sustainable development. SSCC has very high application value and economic significance.Abstract: There is important application value and economic value in exploring the potential use of steel slag to prepare self-compacting concrete (SCC) and make full use of solid waste resources. In this paper, steel slag self-compacting concrete (SSCC) with relatively ideal workability is prepared by using steel slag instead of natural fine aggregate based on mix proportion optimization and SSCC performance research. The filling ability, passing ability and resistance segregation were tested to evaluate the workability of SSCC. The results show that when the content of steel slag sand is 20%, the workability performance of SSCC is similar to that of SCC with natural aggregates. When the content of steel slag sand is less than 60%, the performance of SSCC can also meet the workability requirements after adjusting the amount of raw materials.

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Hydration characteristics of recycling reduction slag and waste sludge by co‐sintered treatment produced as eco‐cement

Lin

Hung³

et al. 2017

Env Prog and Sustain Energy

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Waste materials have traditionally been discarded in landfills and often dumped directly into ecosystems without adequate treatment. However, possible reuse and recycling alternatives should be investigated and implemented. Recent environmentally friendly approaches have been aimed at achieving sustainable development by conserving natural resources and minimizing the discarding of materials. The objective of the present study was to investigate the hydration characteristics of reduction slag, limestone sludge, stone sludge, and iron-oxide sludge for fabricating four types of eco-cement clinkers. The compound raw materials were burned for 2 h at 14008C to form eco-cement clinkers. The results showed that the major components of ordinary Portland cement (OPC), namely C 3 S, C 2 S, C 3 A, and C 4 AF, were present in the eco-cement clinkers. The compressive strength development of EcoA pastes (containing 78% limestone sludge, 19.51% stone sludge, and 2.49% iron-oxide sludge) was similar to that of the commercial OPC products. The compressive strength of the EcoD pastes (containing 71% limestone sludge, 19.51% stone sludge, 2.49% iron-oxide sludge, and 7% reduction slag) decreased as the amount of a-C 2 S increased. Mercury intrusion porosimetry indicated that the pore volume of the pastes gradually decreased with an increase in the curing time. Furthermore, the results of physical-mechanical tests showed that reduction slag, limestone sludge, stone sludge, and iron-oxide sludge can be used as raw materials in cement production at no cost to the producer, thereby reducing the production costs.

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Innovative usages of stainless steel slags in developing self-compacting concrete

Cited by 71 publications

References 22 publications

High Performance Self-Compacting Concrete with Electric Arc Furnace Slag Aggregate and Cupola Slag Powder

High Performance Self-Compacting Concrete with Electric Arc Furnace Slag Aggregate and Cupola Slag Powder

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

Hydration characteristics of recycling reduction slag and waste sludge by co‐sintered treatment produced as eco‐cement

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