Feasibility of silicomanganese slag as cementitious material and as aggregate for concrete

Tamayo, P.; Ángel, Gilberto García Del; Setién, J.; Soto, A.; Thomas, Carlos

doi:10.1016/j.conbuildmat.2022.129938

Cited by 11 publications

(3 citation statements)

References 25 publications

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“…At the same time, SMS powder enhanced the corrosion resistance of cement paste in Na 2 SO 4 and NaCl media. Tamayo et al [31] found that SMS as a building material met the leaching and geometric requirements of the current regulations. However, SMS will cause mechanical losses in the mixture, which was why it can only be applied in non-structural concrete.…”

Section: Introductionmentioning

confidence: 95%

Investigating on the Pavement Performance of Multi-Source Solid Wastes by Cement and Fly Ash

Shan,

Li,

Zhao

et al. 2023

Materials

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In order to advance the utilization rate of multi-source solid wastes in the Ningxia region of China, 16 groups of pavement base mixtures were designed with cement and fly ash (FA) as binders, steel slag (SS), silicon manganese slag (SMS), and recycled crushed stone (RCS) as composite aggregates. The evolution laws of mechanical and frost resistance properties of the mixture were investigated by unconfined compressive strength (UCS), indirect tensile strength (ITS), freeze–thaw (FT), and ultrasonic detection tests. Then, the strength formation mechanisms were revealed by microscopic characterization technology. The mathematical models between UCS-ITS, UCS-ultrasonic amplitude, FT cycles-UCS damage, and frost resistance coefficient-relative dynamic elastic modulus Er were established. The results show that cement content and curing age exhibited a positive effect on the mechanical strength and frost resistance of the mixture. When the replacement rate of SS was 60%, the mechanical strength and frost resistance were preferable. The R2 of the strength relationship models constructed was greater than 0.9, indicating high fitting accuracy. With the extension of the curing age, the cementitious products such as C-S-H (hydrated calcium silicate) and AFt (ettringite) developed entirely, and they were interlocked and cemented with each other, resulting in the micro-morphology developed from the three-dimensional network structure to the dense system. The macroscopic behavior incarnated that the mechanical strength and frost resistance of the mixture were significantly enhanced.

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Section: Introductionmentioning

confidence: 95%

Investigating on the Pavement Performance of Multi-Source Solid Wastes by Cement and Fly Ash

Shan,

Li,

Zhao

et al. 2023

Materials

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“…Silico manganese slag is a result of the carbothermic reduction of high-MnO ferroalloys in submerged arc furnaces. Despite having a higher SiO 2 content and a lower CaO content, a problem that can be addressed by blending it with fly ash [46][47][48], it has considerable potential as a supplementary cementitious material (SCM) due to its comparable reactivity [46] and quick cooling which promotes an amorphous form [47]. These studies have identified the coexistence of FA-derived slag-activated gel (C-S-H/C-A-S-H) and geopolymer gel (N-A-S-H) within the blended matrix [29].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Self-Compacting Concrete with Use of Artificial Aggregate and Partial Replacement of Cement by Fly Ash

Patil,

Jayale,

Arunachalam

et al. 2024

Buildings

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Artificial aggregate (AF), i.e., silico manganese (SiMn) slag aggregate, is a byproduct of ferromanganese and silico manganese alloy production. The utilization of industrial waste and industrial byproducts in construction has increased the aim of conserving natural resources to nurture a pollution-free environment. The current study examines the performance of the use of artificial aggregate (AF) and partial replacement of cement with fly ash (FA). The properties of fresh concrete, as well as the compressive and flexural strength and split tensile strength of concrete were evaluated. Seven mix proportions were prepared for M30-grade concrete. The first was a control mix (with 0% AF and FA), three other mixes contained varying amounts of AF (20%, 40%, and 60%) as a partial replacement of CA with AF. The average compressive strength of the control SCC was found to be 32.87 MPa (megapascals) at the age of 28 days, and after replacing 20% natural aggregate with artificial aggregate, the compressive strength increased by 8.27%, whereas for 40% and 60% replacement, it decreased by 4.46% and 12.55%, respectively. Further investigation was performed on the optimum value obtained by replacing 20% of CA with AF. At this percentage, cement was replaced by FA at (15%, 25%, and 35%) where at 15%, the average compressive strength increased by 7.41%, whereas for 25% and 35% replacement, it decreased by 7.47% and 17.19%, respectively. For SCAF20 and SCF15, all strengths were at maximum due to the increase in its density. The findings show that the development of advanced construction materials is environmentally sustainable.

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“…Miah et al [ 19 ] found that steel slag can form an alkaline medium after depolymerization, which stimulated the low-activity silicic acid substances in the system to generate additional C-S-H, and the overall mechanical properties and durability were optimized. Tamayo et al [ 20 ] found that building materials containing silicomanganese slag will weaken some mechanical properties, but they were suitable for non-structural concrete. Frías et al [ 21 , 22 ] summarized that the strength in 7 days of the colloidal sand was weaker than that of the control group, but the later strength was gradually the same.…”

Section: Introductionmentioning

confidence: 99%

Research on Mechanical and Shrinkage Characteristics of a Resource-Based Cement Solid-Waste Concrete

Ning,

Jiang,

et al. 2023

Materials

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Recycling of multi-source solid waste is of great benefit to energy conservation and environmental governance. In this paper, a new type of environmental protection concrete for railway accessory facilities was prepared from silicon-manganese slag, steel slag, fly ash and recycled macadam. Seven kinds of concrete with different mix proportions were designed. Through unconfined compressive strength, splitting, drying shrinkage and temperature shrinkage tests, the multivariate changing trends of steel slag content, cement dosage and age on the anti-interference ability of concrete were investigated. The main mechanisms of the development of mechanical and dry shrinkage properties were revealed by the hydration process of 3SR-60. The results show that 3SR-60 had better mechanical strength under the same cement dosage. The temperature shrinkage strain decreased and then increased with the rise of the proportion of waste residue, increased with the addition of cement dosage and decreased first and then increased with the descent in the temperature. The temperature shrinkage coefficient reached the lowest value at 0–10 °C. The drying shrinkage coefficient decreases with the increase in the proportion of waste residue and increases with the increase in cement dosage. The dry shrinkage strain increased rapidly during the first 8 days and became almost constant after 30 days. Cementation of calcium silicate hydrate (C-S-H) and ettringite (AFt) developed continuously and filled the internal pores of the structure, interlocking and cementing with each other, which made the microstructure develop from a three-dimensional network to a dense complex, and the macro dimension was reflected in the enhancement of the power to resist external interference. The conclusion of the test summarized that SR-60 had preferable mechanical and shrinkage performance.

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Feasibility of silicomanganese slag as cementitious material and as aggregate for concrete

Cited by 11 publications

References 25 publications

Investigating on the Pavement Performance of Multi-Source Solid Wastes by Cement and Fly Ash

Investigating on the Pavement Performance of Multi-Source Solid Wastes by Cement and Fly Ash

Performance Analysis of Self-Compacting Concrete with Use of Artificial Aggregate and Partial Replacement of Cement by Fly Ash

Research on Mechanical and Shrinkage Characteristics of a Resource-Based Cement Solid-Waste Concrete

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