In this study, slag-fly ash-based geopolymer concretes reinforced with three different fiber types (Polypropylene (PP), steel (ST), and polyamide (PA)) were produced and the mechanical properties such as compressive, tensile, drying shrinkage and flexural behavior were investigated.

Coal ash—produced by fossil fuel plants in the process of combusting coal—is the nation's second-largest waste stream behind trash, and millions of Americans live near coal ash ...

The first commercially available slag-based cement was developed in Germany in 1865 [17]. Currently, over 200 million tons of slag cement is used worldwide annually [18]. Metal slag is a ferrous slag, industrial waste, and by-product of the iron industry produced during iron processing in steel plants due to removing impurities from …

The stability of steel-slag road materials remains a critical issue in their utilization as an aggregate base course. In this pursuit, the present study was envisaged to investigate the effects of fly ash on the mechanical properties and expansion behavior of cement-fly-ash-stabilized steel slag. Strength tests and expansion tests of the cement …

It is worth noting that many industrial solid wastes, such as coal fly ash, blast furnace slag, steel slag, phosphogypsum, silica fume, and etc., have certain volcanic ash activity and self-hardening properties, and thus they can be used as supplementary cementitious materials (SCMs) to replace a part of the OPC in the construction field.

AbstractIn order to study the effects of steel slag on the mechanical properties and microstructure of geopolymers, the compressive strength and flexural strength of a fly-ash steel slag–based geop...

This Best Practice Guide shows that concrete in corporating fly ash and slag in proportions less. than 20 to 30%, and 25 to 35%, respectively, is generally considered equivalent to portland ...

Semantic Scholar extracted view of "Investigation on the application of steel slag-fly ash-phosphogypsum solidified material as road base material." by Weiguo Shen et al.

The method of soil stabilization used percentage variation admixture of 20% fly ash mixed with 0%, 10%, 20% and 30% of steel slag from soil total weight.

The paper deals with developing fly ash–Blast Furnace Slag (BFS) composite with additives like cement to utilize waste material in engineering applications. The additive-like cement with different proportions has gained particular attention worldwide because of the excellent bonding strength and enhancement of mechanical properties of …

Steel slag is an industrial waste residue generated in the steelmaking process, and its emissions account for approximately 15% to 20% of crude steel production [1, 2].

To address the geological hazard posed by unstable loess slopes prone to collapse and landslides, a high-strength geopolymer cementing material was developed utilizing green steel slag–fly ash as its primary constituent and activated through the application of sodium silicate alkalinity. The mechanical properties and microstructure …

This article compares the environmental impacts of using fly ash and slag as cement substitutes in concrete production, based on a life cycle assessment.

The effects of particle size, chemical composition, glassy phase content on the reactivity of slag and fly ash are investigated.

The stability of steel-slag road materials remains a critical issue in their utilization as an aggregate base course. In this pursuit, the present study was envisaged to investigate the effects of fly ash on the mechanical properties and expansion behavior ...

Coal bottom ash and boiler slag are coarse, granular, incombustible materials that are collected from the bottom of furnaces that burn coal. The majority of coal bottom ash and boiler slag are produced at coal-fired electric utility generation stations, although bottom ash and boiler slag are produced by industrial and institutional coal-fired boilers and …

Basic oxygen furnace (BOF) slag generated in iron and steel industries were gradually added in a standard triaxial vitrified porcelain tile composition substituting feldspar. Fly ash, a by product of thermal power plant was used as filler by replacing quartz in part or full. The effect of such additions on the physico-mechanical properties of the …

The world-wide production of these industrial by-products is: fly ash about 900–1000 million tons [ 2, 8] and blast furnace slag about 140–330 million tons [ 2, 8 ]. Both discussed components are obtained, similarly to Portland clinker, in a high-temperature process and commonly used as main constituents of cement and/or as concrete …

Steelmaking slag, or steel slag, is a by-product from the production of steel during the conversion of hot metal to crude steel in a basic oxygen furnace, or during the melting of scrap in an EAF. The slag is generated as a melt and is a complex solution of silicates and oxides that solidify upon cooling.11 Depending on the specific steel production process, …

In order to reduce stormwater runoff, permeable brick was prepared by compounding with fly ash and steel slag as the main substrate. The study found that the amount of steel slag has a significant influence on the compressive strength of permeable brick. When the proportion of steel slag is 6.5%, the compressive strength of permeable …

Mechanical properties and microstructure of binding material using slag-fly ash synergistically activated by wet-basis soda residue-carbide slag ... Formation of Friedel's salt using steel slag and potash mine brine water. ... is a kind of by-product by the ammonia-alkali process in the soda ash production, which contains calcium …

In this paper, an overview of the recent achievements and challenges of using steel slags (BOF, EAF and LF slag) as cement replacement (usually ground into powder form with the size of 400–500 m 2 /kg) and aggregate in cement concrete is presented.

Fly ash is a by-product obtained from the burning of pulverized coal during electricity generation Thermal power plants. Fly ash is a pozzolan containing aluminous and siliceous material which forms cement in the presence of water. Fly ash is used as a supplementary cementitious material (SCM) in the production of Portland cement concrete.

Semantic Scholar extracted view of "Enhancing the performance of concrete containing fly ash and steel slag via a pressure ing process" by Dongdong Zhou et al.

High-alumina fly ash microbeads and steel slag were used as main raw materials to synthesize feldspar porous ceramics via high-temperature solid phase sintering by adding pulverized coal as a pore-forming agent. The effects of the steel slag and pore-forming agent on the apparent porosity and flexural strength of porous ceramics were …

Blast Furnace slag, Steel melting shop slag and fly ash are the major portion of waste generated. Waste generation can be substantially reduced by the following measures:

Slag generated from basic oxygen furnace (BOF) or Linz-Donawitz (LD) converter is one of the recyclable wastes in integrated steel plants. This paper deals with the present and possible use of LD slag in agriculture. At present, the amount of slag deposited in storage yard, leading to the occupation of farm land and serious pollution to the ...

Slag and Ash As discussed in the Background, solid waste from conventional pulverized coal-fired power plants is a significant environmental issue due to the large quantities produced, chiefly of coal fly ash, and the potential for leaching of toxic substances (e.g. heavy metals such as lead and arsenic) into the soil and groundwater at disposal sites, …

BF GCP sludge, sinter sludge, coke breeze and fly ash etc. The granulated BF slag is used for cement production but the steel making slag containing high amounts of Fe is the major challenge.

In this study, SiO2–Al2O3–CaO–MgO steel slag ceramics containing 5 wt % MgO were used for the preparation of ceramic bodies, with the replacement of 5–20 wt % quartz and feldspar by fly ash. The effect of the addition of fly ash on the sintering shrinkage, water absorption, sintering range, and flexural strength of the steel slag ceramic was studied. …