Analyzing the Mechanical and Durability …
Steel slag is a solid byproduct of the steelmaking process, widely generated in the metallurgical industry. Due to its alkaline nature and excellent adhesive properties with asphalt, it represents a potential road construction …
اقرأ أكثر
Experimental Study on the Mechanical Properties of Metallurgical Slag
Three types of aggregate, including metallurgical slag aggregate (steel slag, copper slag, and iron sand), rare earth porcelain sand (REPS) aggregate as artificial aggregate, and recycled aggregate, were selected to produce concrete with the same basic mixture proportions in order to investigate the influence of aggregate types and aggregate …
اقرأ أكثر
Comparative Study on the Effects of Steel Slag Aggregate …
Replacing all or some portion of natural aggregates with steel slag would lead to considerable environmental benefits. Steel slag aggregate generally exhibit a propensity to expand hence steel slag aggregates are generally not used in concrete making. However, use of blended cement concrete is reported to reduce the expansion of the concrete.
اقرأ أكثر
Sustainable use of steel slag as coarse aggregate and its
Construction materials are dealing with new challenges due to increased resource exploitation by globalized infrastructure. Research has consequently documented various waste management techniques that are focused on environmentally sustainable principles. The coarse steel slag aggregate (CSSA) can be reused as aggregate in cement concrete mixes. Hence, …
اقرأ أكثر
(PDF) Reuse of Slags Containing Lead and Zinc as Aggregate …
Clinker-free, carbonate-bonded monoliths are prepared by accelerated carbonation for immobilization of hazardous elements present in: a stainless-steel slag, two copper slags, and one lead slag.
اقرأ أكثر
Utilization of steel slag as partial replacement for coarse aggregate …
The utilization of steel slag for industrial and construction purposes has gained significant attention in recent years due to its abundant availability and potential environmental benefits. This study explores the feasibility of utilizing steel slag as a coarse aggregate in concrete, aiming to determine the optimal replacement percentages for desired mechanical …
اقرأ أكثر
Experimental Investigation on Strength Characteristics of Lead slag …
Initially chemical constituents of Lead slag and physical properties of cement, GGBS, River sand, Quarry dust and coarse aggregates were analyzed. ... The load carrying capacity of the beams made of copper slag as fine aggregate performed well when compared with the control concrete beam alytical modelling is developed by using Regression ...
اقرأ أكثر
On The Potential Use of Copper-Modified Geopolymer Incorporating Lead
Thermal energy storage (TES) system has been widely employed in concentrated solar power (CSP) plants to ensure the system efficiency. With excellent thermal characteristics, electrolytic copper powder (ECP), graphene oxide (GO) and lead-smelter slag (LSS) aggregate – a mining waste material, have been utilised in this study, aiming to fabricate metallurgical …
اقرأ أكثر
Effect of using heavy aggregates on the high
Concrete mix containing lead slag aggregate has higher mechanical properties and enhances the attenuation properties for fast and thermal neutrons, gamma rays compared …
اقرأ أكثر
Utilization of secondary lead slag as construction material
Semantic Scholar extracted view of "Utilization of secondary lead slag as construction material" by Metta Penpolcharoen. ... The technical properties of cement mortars containing natural fine aggregate that is replaced by lead blast furnace slag at 25 and 35% level were assessed at fixed water-to-cement (W/C) ratio and at … Expand. 22.
اقرأ أكثر
Application of Steel Slag as an Aggregate in Concrete …
Materials 2023, 16, 5841 2 of 24 slags are commonly landfilled or stockpiled in slag disposal yards, which occupy pre-cious land resources and lead to severe environmental threats [8], as shown in Figure 1.
اقرأ أكثر
(PDF) IRJET- COMPARATIVE STUDY OF ALTERNATE FORMS …
irjet- comparative study of alternate forms of concrete by replacing brick bat and clay tiles as coarse aggregate and lead slag as fine aggregate.
اقرأ أكثر
Composite materials with primary lead slag content: …
The presence of the primary lead slag as aggregate substituent in concrete, along with steel shot and barite, enhances the density and shielding efficiency against gamma radiation for Ir192, Cs137, Co60 radioactive elements with average gamma energies of 0.37 MeV, 0.662 MeV and 1.25 MeV. The results showed that even the presence of primary ...
اقرأ أكثر
Mechanical and durability performance of concretes produced …
Steel slag is a by-product of the steel industry, with a global generation of 280 million tonnes in 2017 [17]. The steel slag as aggregate in cement-based composites has been studied in the literature in the past years, although many authors question the real applicability of this residue since its composition could present some expansive phases.
اقرأ أكثر
Physicomechanical and gamma-ray shielding properties of …
The higher density of steel slag aggregates could lead to heavyweight concrete with high strength and durability [113,120,181,182]. ... nanomaterials such as nano-silica slurry and nano-calcium carbonate as additives for the production of steel furnace slag (aggregate of steel furnace slag: ASFS)-based heavyweight concrete (HWC) with improved ...
اقرأ أكثر
Experimental study on fly ash and lead smelter slag-based geopolymer
The mix design was developed by the authors in previous works [6], which incorporates granulated lead smelter slag (GLSS) with fly ash as a blended binder. To maximise the usage of GLSS, GLSS was also utilised as fine aggregate, resulting in a mix comprising a total of 32.85% of GLSS by weight and only 8.85% fly ash.
اقرأ أكثر
Review Accelerated carbonation of steel slag: A review of …
Steel slag is a by-product of the steel production process, accounting for approximately 15% of the whole crude steel output [1].The accumulation of untreated steel slag not only occupies a significant amount of land but also leads to the leaching of heavy metal ions (such as vanadium, chromium, arsenic, lead, cadmium), polluting surrounding water sources …
اقرأ أكثر
Mechanical and durability properties of natural fiber …
Industrial by-products, namely fly ash (FA) and ground granulated blast furnace slag (GGBS), were used as binders and waste-based sands, namely lead smelter slag (LSS) and waste glass sand (WGS), were used as fine aggregates in geopolymer mortars reinforced with natural fibers (i.e., 1% coir, ramie, sisal, hemp, jute and bamboo fibers, as well ...
اقرأ أكثر
Valorization of secondary copper slag as aggregate and …
An analysis of the effects of copper slag as aggregate (QCS) and cement (SCS) replacement in ultra-high performance concrete with and without vacuum mixing and heat curing on mechanical strength and porosity are presented. ... Self-cementation solidification of heavy metals in lead-zinc smelting slag through alkali-activated materials ...
اقرأ أكثر
Composite materials with primary lead slag content: …
Semantic Scholar extracted view of "Composite materials with primary lead slag content: Application in gamma radiation shielding and waste encapsulation fields" by N. Saca et al. ... In this study, the effects of replacing fine aggregate by granulated lead/zinc slag waste (GLZSW) on the thickness of concrete shields against X-ray radiation and ...
اقرأ أكثر
Aggregates for Concrete
which aggregate particles are embedded. Aggregate is granular material such as sand, gravel, crushed stone, blast-furnace slag, and lightweight aggregates that usually occupies approxi-mately 60 to 75% of the volume of concrete. Aggregate properties significantly affect the workability of plastic
اقرأ أكثر
Comprehensive Analysis of Steel Slag as …
The use of BOF slag as a coarse aggregate in asphalt concrete was evaluated by comparing the test results obtained with the limits established in different countries and other natural aggregates (ballast, limestone and …
اقرأ أكثر
Investigation of gamma radiation shielding and compressive strength
This trend is mainly attributed to the high specific gravity of the scale and granulated lead-zinc slag aggregate. According to Table 3, complete substitution of natural sand by scale and granulated lead–zinc slag wastes has positively influenced the compressive strength properties. The results obtained showed an increase in compressive ...
اقرأ أكثر
Use of waste copper slag, a sustainable material
Copper/lead/zinc slag (CLZS) Formed from the smelting of ores, it is generally granulated to form a sand size product with a top size of about 5 mm, with only a small quantity of material below 1 mm. ... The use of copper slag …
اقرأ أكثر
Use of Pb blast furnace slag as a partial substitute for fine aggregate …
The technical properties of cement mortars containing natural fine aggregate that is replaced by lead blast furnace slag at 25 and 35% level were assessed at fixed water-to-cement (W/C) ratio and at fixed flow table value. The leachabilities of some toxic elements from the cement mortars were also assessed to test the environmental suitability of the slag for use …
اقرأ أكثر
(PDF) Utilization of granulated lead slag as a
Pyrometallurgical processing of lead ores generates large amounts of slag which is stockpiled as chunk or granules. Romanian dump heaps of such slag produced in the period 1972–1998, occupy an ...
اقرأ أكثر
Immobilisation of lead smelting slag within spent aluminate—fly …
A recent study on artificial primary lead slag confirmed immobilisation in geopolymers [29]. In the present work an industrially produced and already landfilled lead slag is incorporated in the geopolymers. ... MSWI bottom ash and boiler and fly ash for using as a fine aggregate in cement mortar. J. Hazard. Mater., 154 (2008), pp. 766-777. View ...
اقرأ أكثر
Recent Trends in Advanced Radiation Shielding Concrete for …
The study indicates that the replacement of the aggregate with lead slag from 40% to 60% resulted in a 5% increase in μ. This result is in line with a study on the effect of lead–zinc slag as a fine aggregate in RSC, which shows a 17% improvement in the μ value with the incorporation of slag .
اقرأ أكثر
Evaluation of asphalt film thickness and heavy metal …
Electric-arc-furnace (EAF) steelmaking uses scrap iron and steel as raw materials. Scrap iron and steel originate from complex sources and may contain heavy metal components which can leach into the environment over time due to wear-and-tear. A by-product of the EAF steelmaking process is oxidizing slag, and approximately 1.2 million metric tons is produced …
اقرأ أكثر
Utilization of secondary lead slag as construction material
Secondary lead slag, a waste product from battery smelting using CaCO 3 as flux, has been investigated for its use as an admixture and/or aggregate in the production of concrete blocks. The slag was added as partial replacements of cement and/or aggregate. The results revealed that the oxide components of the slag were similar to those of ordinary Portland …
اقرأ أكثر