Enhancing the performance of concrete containing fly ash and steel
In this study, fly ash (FA), steel slag (SS), magnesium oxide (MgO), and magnesium sulfate (MgSO 4) were used as raw materials to prepare a new type of solid waste-based concrete in the laboratory via a pressure ing process (PFP). Pressure ing was performed to balance the force of the bubbles and improve the …
Study on steel slag and fly ash composite Portland cement
The production and application of steel slag and fly ash composite portland cement (SFCPC) have at least the following advantages: 1. It can reduce the cost of cement production as well as enhance the utilization factor of SS and FA. 2. The reduction of clinker can decrease air pollution compounds, such as CO 2, SO 2, NOx, during …
Investigations on Alkali-Activated Slag/Fly Ash Concrete with steel
Investigations on Alkali-Activated Slag/Fly Ash Concrete with steel slag coarse aggregate for pavement structures, International Journal of Pavement Engineering, 18:6, 500-512, DOI: 10.1080 ...
STABILIZATION OF SOFT SOIL WITH GRANULATED …
steel plant district Durg, Chhattisgarh, India. Swelling pressure 2.3 Fly Ash The FA has been collected from nearby thermal power station at Urla district Raipur, Chhattisgrh, India. Properties of soft soil, GBS and fly ash are determined as per the Bureau of Indian Standard (BIS). Properties of soft soil are tabulated in Table 1.
Comprehensive utilization of steel slag: A review
1. Introduction. Steel slag is the main solid waste generated in the steel-making process, accounting for 15 to 20% of crude steel output [1].China's crude steel …
World's first 'Steel-Slag Sand' plant
On the occasion of World Environment Day, JSW Steel dedicated the World's first 'Steel-Slag Sand' plant to the nation at JSW Steel Vijayanagar Works. The commissioned unit of 0.30 Mtpa capacity (821t/day) is one of its kind in the world, equipped with value-added technology, which will not only mitigate the slag disposal problem but also ...
Preparation of reactive powder concrete using fly ash and steel slag …
To decrease the cement and SF content of RPC by using ultra-fine fly ash (UFFA) and steel slag powder (SS), the effect of these mineral admixtures on compressive strength of RPC were investigated. The experimental results indicate that the utilization of UFFA and SS in RPC is feasible and has prominent mechanical performance. The …
Intrinsic properties and micro-crack characteristics of ultra …
The specific surface areas of fly ash and steel slag are 370 m 2 /kg and 400 m 2 /kg, respectively. The chemical compositions are shown in Table 1. The XRD patterns of fly ash and steel slag are shown in Fig. 1. The main phases of fly ash are quartz (SiO 2), mullite (3Al 2 O 3 ·2SiO 2), calcium oxide (CaO) and corundum (Al 2 O 3).
Study on the mechanical properties and water stability of steel slag …
The results showed thatincorporating steel slag could decrease the fluidity and setting time of fly ash geopolymer while increasing its strength. When the steelslag and activator was 30% and 18%, respectively, the compressive strength at 7 and 28 days was the highest, reaching 19.3 and 24.9MPa, respectively.
Mechanical properties and mechanisms of fiber reinforced fly ash–steel …
The specific surface area of fly ash is about 369 m 2 /kg; Its chemical composition is shown in Table 1, mainly 22.40% of Al 2 O 3, 40.70% of SiO 2 and 9.46% of CaO, close to the high calcium fly ash (CaO > 10%), which is belong to Class C fly ash. Steel slag is the solid waste discharged from steelmaking, and its content is affected by …
Suitability of leaching test methods for fly ash and slag: A …
The WLT indicates the potential for contaminant release from fly ash or mixtures, but does not evaluate how a fly ash or fly ash mixture will impact groundwater (Bin-Shafique et al., 2002). Leaching of heavy metals from the dumped fly ash and steel slag may have negative impact on the environment should be reduced by leaching …
Performance and life-cycle assessment of high-volume fly ash …
In this study, nine concrete mixes were produced using raw materials that include 53 grade ordinary Portland cement (OPC), siliceous fly ash (FA) sourced from an anthracite coal-based Indian thermal power plant (Chennai city), potable water, polycarboxylate ether (PCE)-based superplasticizer (SP), slag sand (SS) and crushed …
what is fly ash in steel plant, why and how to make it to …
The fly ash produced in the steelmaking process replaces iron ore by processing into briquette to reduce the consumption of iron ore in the converter blowing process, thereby realizing the recycling of the by-products of the converter steelmaking. Tags : binder fly ash sludge. What is fly ash The steelmaking industry is a typical resource ...
Fly ash for sustainable construction: A review of fly ash …
FA, or pulverised fuel ash, is a byproduct of coal-fired power plants and is used as a mineral additive in cement and concrete. Fig. 1 shows a typical layout of a coal-burning generating station. Pulverized coal is blown into the burning zone of the furnace, where its combustible constituents, mainly carbon, hydrogen, and oxygen, ignite at …
Fly ash application in soil for sustainable agriculture: an …
A huge quantity of fly ash (FA) that is being generated as a residue from the coal combustion process is nowadays considered as a challenging solid waste all around the globe. The FA production leads to various environmental problems due to the enormous area required for its proper disposal as well as heavy metal toxicity associated with it. A …
Environmental impact of concrete containing high volume fly ash …
A life cycle assessment was conducted on concrete made with fly ash, foundry sand, and steel slag, and it was found that the environmental implications were reduced by 75%, 85%, ... fly ash, and GGBS plant is 360 km, 30 km, and 330 km, respectively. ... making it the ideal choice for construction projects. Download : …
An Overview of Utilization of Steel Slag
Feng [33] used the mixture of fly ash, steel slag powder and cement clinker to prepare composite cement and observed that a certain amount of steel slag admixture in cement could reduce the porosity, improve pore distribution and increase the consistency of cement. ... practice. Metal mine Res (in Chinese) 2010; 1:176-7. [10] Li K, Huang JB ...
Full article: A comprehensive review on coal fly ash …
Among the publications were nine review papers, the first on the use of alkali activated fly ash ground granulated blast furnace slag to replace cement in concrete mix (Panda et …
Remediation Effects of Steel Slag and Fly Ash on Heavy …
The treatments of fly ash added at 20-40 g•kg-1 and steel slag at 3-6 g•kg-1 had the pH values within 5.5-7.0, and the Superscript textneutral and weakly acidic soil environment was suitable ...
Utilization of Fly Ash and Steel Slag in Road Construction
use in the road construction. Steel slag is easily available and has higher CBR value than fly ash hence saving is excess than fly. ash use. The optimum mix is 15% steel slag mix in subgrade and ...
Study on the performance and reaction mechanism of alkali …
Song [24] attempts were made to alkali-activate fly ash-steel slag, and it was found that when the substitution rate of steel slag for fly ash was between 20%− 50%, the compressive strength at 28 days decreased significantly with increasing substitution rate. When the substitution rate of steel slag reached 50%, the compressive strength …
Industrial wastes: Fly ash, steel slag and
Role of steel slag, phosphogypsum, and fly ash in paddy soil. Recently, a field study was conducted by Wang et al. (2018a) in the Wufeng Agronomy Field of …
Comparison of environmental impacts of fly ash and slag as …
Both fly ash and slag can improve concrete's resistance to chloride attack [45], an important long-term durability attribute of concrete. Although fly ash and slag are considered avoided wastes [43, 46], certain processing and preparation of these materials may necessitate additional energy and emissions, which must also be quantified [45]. As ...
Study on Compressive Strength and Water Permeability of Steel Slag-Fly …
The results show that the compressive strength and permeability coefficient of permeable bricks can reach a good level when the composite ratio of steel slag is 6%, fly ash is 30%, and the design ...
Recycling of Silicomanganese Slag and Fly Ash for …
In order to reduce the manufacturing cost of ed ceramics and expand the application scope of industrial solid waste, in this study, a new type of environment-friendly ed ceramics was prepared using direct high-temperature ing with waste silicomanganese slag (SMS) and fly ash (FA) as raw materials and silicon carbide (SiC) …
Processing Ash and Slag Wastes from Thermal Power Stations …
Abstract. For existing coal-fired power plants, current methods of utilizing ash and slag waste may be considered in addressing new environmental and economic risks. However, for new power sources, environmental considerations are much more important in selecting the coal-combustion technology. Technology based on a …
Study on Compressive Strength and Water …
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 …
Synthesis of geopolymer using municipal solid waste incineration fly
In this study, a novel method for the disposal of municipal solid waste incineration fly ash (MSWIFA) was proposed. By applying geopolymer technology, steel slag (SS) and MSWIFA were used together as precursors to synthesize a cementitious material with sufficient strength that is useable in construction.
Characterisation of LD slag of Bokaro Steel Plant and its …
The compressive strength of the brick samples type A (Fly ash – 35% + LD slag – 30% + Gypsum – 5% + Quarry dust – 20% + Lime – 9.75% + CaCl 2 – 0.25%) was found to be more than 100 kg/cm 2 after 14 days of curing which is sufficiently higher than that of the strength of a normal red clay bricks (50–70 kg/cm 2) and may be its ...
Buildings | Free Full-Text | Interfacial Behavior of Slag, Fly Ash…
The slag belonged to ground granulated blast slag, S105 grade, provided by Gongyi Longze Water Purification Material Co., Ltd., in Henan, China, the fly ash was F class low calcium fly ash, supplied by Zhengzhou Rongchang Sheng Environmental Protection Material Co., Ltd., in Henan, China, and the red mud was the by-product of …