Use of Soil-Steel Slag-Class-C Fly Ash Mixtures in Subgrade
The 7% steel slag-3% Class-C fly ash mixture was used to stabilize the in situ subgrade soils of some sections of the I-65 ramps located in the SW and NW quadrants of the intersection of 109th Avenue and I-65. Field compaction quality control was done by performing Dynamic Cone Penetration Tests (DCPTs) and nuclear gauge tests.
(PDF) Influence of Steel Slag and Fly Ash on Strength …
The proportions of Steel slag and Fly ash used along with the . unmodified soil in the study are 0%, 10%, 20%, 30%, 40% . and 50%. The following tests were conducted on the soil . samples ...
Comparative Analysis between Properties of Steel Slag, Fly …
Large stretches of scarce land, which can be used for shelter, agriculture or some other productive purposes, are being washed for disposal of fly ash and steel …
Minerals | Free Full-Text | Characterization of Macro …
Using solid wastes (SWs) as backfilling material to fill underground mined-out areas (UMOAs) solved the environmental problems caused by SWs and reduced the backfilling cost. In this study, fly ash (FA), gypsum and steel slag (SS) were used to prepare cement-based composites (CBC). The uniaxial compression, computed …
Strength-Gain Characteristics and Swelling Response of Steel …
In this study, long-term swelling and corrosivity tests were performed on basic-oxygen-furnace steel slag (BOFSS) and electric-arc-furnace ladle steel slag …
Alkali-Activated Controlled Low-Strength Material Utilizing …
Thanakorn et al. used high-calcium fly ash and steel slag to prepare pavement materials [11]. Ladle furnace steel slag was used to prepare asphalt mortar sand by Marco Pasetto [12]. ...
4.2. Major Gasification Solid Byproducts | netl.doe.gov
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, …
Investigations on Alkali-Activated Slag/Fly Ash Concrete with steel
The present investigation is conducted to evaluate the effect of steel slag coarse aggregates on mechanical properties and fatigue behaviour of Alkali-Activated Slag Fly Ash Concrete (AASFC) mixes. AASFC mixes were prepared with steel slag coarse aggregates by replacing natural coarse aggregates at various replacement levels (0, 25, …
Slag uses in making an ecofriendly and sustainable concrete: A …
Slag and fly ash are the most generated aluminosilicate precursors [54]. The productions of a single ton of ordinary Portland cement (OPC) demands around 4.0 G Joule energy and creates about a ton of CO 2 emission. At present, the cement production plants contribute nearly 7% of global CO 2 emission. Other threats to our environment …
EXPERIMENTAL STUDY ON STABILIZATION OF EXPANSIVE SOIL USING STEEL SLAG
To adding the steel slag – fly ash in the permeability is decreased the voids are percent in the soil. The increasing the percentage of steel slag in the mixture is reduce the soil – fly ash air voids. To increasing the steel slag the coefficient of permeability is reduced. From the economic analysis it is found that, a substantial save in ...
(PDF) Use of Soil-Steel Slag-Class-C Fly Ash Mixtures in …
by U.S. DOTs and hence, the compaction of the subgrade 10. The maximum swelling strains of the compacted soil- was deemed satisfactory. 7% steel slag-3% Class-C fly ash and soil-7% steel slag-3% blast furnace slag mixtures were 0.13% and Recommended Citation 0.052% based on the results of the long-term CBR swelling tests.
The mechanism of pristine steel slag for boosted performance of fly ash
Fly ash was replaced by 0, 5, 10, and 15% of steel slag, and the expansion rate ranged from −0.29% to 20.24%. Increased steel slag content reduced the bulk density of geopolymer. The incorporation of steel slag not only provided calcium for the information of C-A-S-H but also filled the pores.
Materials | Free Full-Text | Studies on the Volumetric Stability …
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 …
Alkali-Activated Controlled Low-Strength Material Utilizing …
Abstract. This study investigated the performance of alkali-activated, cement-based controlled low-strength materials (CLSMs). The CLSM was produced by …
Coal Ash, Fly Ash, Bottom Ash, and Boiler Slag
Bottom ash. Bottom ash is the coarser component of coal ash, comprising about 10 percent of the waste. Rather than floating into the exhaust stacks, it settles to the bottom of the power plant's ...
Industrial wastes: Fly ash, steel slag and
Steel slag, phosphogypsum, and fly ash can serve a key role to mitigate the methane and nitrous oxide emissions from the paddy fields. Besides, some of the nutrients present in these wastes can also provide additional benefits to paddy soils. The steel slag, a potential industrial waste, has been studied specifically in various paddy growing ...
Geopolymers Based on a Mixture of Steel Slag and Fly Ash, …
At present, the conservation of the environment represents an objective that everyone wants to achieve. The construction industry has influenced the advancement of alternative materials that comply with sustainable development. In this article, reinforced concrete was obtained by mixing 80% blast furnace slag and 20% fly ash. These …
Comprehensive utilization of steel slag: A review
Fang et al. [52] used steel slag and fly ash instead of some cement, and under the optimal conditions of the composite ratio of cement, steel slag powder, and fly ash of 12:5:3, it was found that the moderate addition of steel slag can effectively …
Mechanical Properties and Microscopic Study of Steel …
dration of steel slag–fly ash geopolymer produces C-S-H and C-A-S-H cementing materials, which effectively fill the gaps between soil particles and enhance the mechanical properties of solidified soil. The research findings can serve as a theoretical foundation for the consolidation of loess sub-grade utilizing steel slag–fly ash geopolymer.
Effective Utilization of Fly Ash and Steel Slag for Partial
Numerous industrial by-products such as steel slag, fly ash, ground granulated blast furnace slag (GGBS) have been tried and tested successfully [3, 4]. Not only manufacturing of concrete becomes economical by using industrial waste materials, it also improves the properties of fresh and hardened concrete. Hence, the effective use of …
"Use of Soil-Steel Slag-Class-C Fly Ash Mixtures in …
In Indiana, the steelmaking industries and power plants generate large quantities of steel slag, blast furnace slag and fly ash every year. The excess of these underutilized industrial by-products are stockpiled and eventually landfilled at disposal sites. Use of steel slag, fly ash and blast furnace slag in road applications, such as in subgrade stabilization …
A review: Reaction mechanism and strength of slag and fly ash …
Fly ash. Fly ash (FA) is mainly composited of SiO 2, Al 2 O 3, Fe 2 O 3, CaO. The chemical composition varies substantially depending on the impurities in the coal [46]. FA contains different sizes of inhomogeneities spherical particles (parts of them are hollow) [47]. The shape of FA has lots of advantages, such as: reducing the water demand ...
Use of Steel Slag and/or Air Pollution Control Devices Dust …
Moreover, the use of steel slag in fly ash bricks open new gateways for its utilization in construction sector and provide steel slag a new platform for replacing the conventional aggregates. In this study, the fly ash and steel slag was varied from 35-70% and 21- 45% respectively to assess the effect on compressive strength and water ...
Investigation on the application of steel slag–fly ash…
In this paper a new type of steel slag–fly ash–phosphogypsum solidified material used as road base material is developed, it should be a new approach to massively recycle the steel slag, fly ash and phosphogypsum [8], [9]. The optimum design of the mix formulations, the properties and the strength formation mechanism of this …
Utilization of Fly Ash and Steel Slag in Road …
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 in subbase for road construction.
Asserting the Applicability of Copper Slag and Fly Ash as …
This research made innovative use of copper slag and fly ash in the construction of a cemented base course of flexible pavement. A full-scale field study evaluated the structural and functional performance of flexible pavement test sections constructed using various combinations of copper slag and fly ash (Class F or Class C) with and without lime.
Chapter 1
Coarse ash particles, referred to as bottom ash or slag, fall to the bottom of the combustion chamber, while the lighter fine ash particles, termed fly ash, remain suspended in the flue gas. Prior to exhausting the flue gas, fly ash is removed by particulate emission control devices, such as electrostatic precipitators or filter fabric ...
Review on the innovative uses of steel slag for waste minimization
Piles of steel slag, a solid waste generated from the iron and steel industry, could be seen due to no utility found for the past century. Steel slag has now gained much attention because of its new applications. The properties of slag greatly influence its use and thus had got varied applications. The chemical composition of steel slag varies as …
Performance of Steel Fiber-Reinforced Alkali …
This study evaluates the performance of alkali-activated slag-fly ash blended concrete made with recycled concrete aggregates (RCA) and reinforced with steel fibers. Two blends of concrete with ground …
Recent applications of steel slag in construction industry
Steel slag and fly ash-based steel fiber reinforced geopolymer mortars have been prepared and studied for its mechanical properties where 0.4% and 0.5% of steel fiber replaced geopolymer mortars reveals better compressive strength (38.6 Mpa at 28 days with improving ratio 22.9%) and flexural strength (7.9 Mpa at 28 days with improving ratio …