Steel slag, copper slag, lead-zinc slag, and electric furnace ferronickel slag are the most common metallurgical slags that could be used as supplementary cementitious materials …
Steel slag, copper slag, lead-zinc slag, and electric furnace ferronickel slag are the most common metallurgical slags. There are numerous precedents of these slags being applied to cement-based materials due to their physical and chemical qualities [44,45,46,47,48,49,50]. However, the use of these metallurgical slags in cement-based materials ...
The results clearly showed that hybrid scale waste/granulated lead–zinc slag waste concrete (Sc/Glzs-C) has better radiation shielding and compressive strength properties than conventional concrete. An additional objective of this study was to calculate the thickness of the hybrid concrete shield to be used instead of conventional concrete ...
Lead Slag
The addition of lead slag to the mortar and the concrete is an efficient method of waste utilization. Additionally, the reuse of lead slag in concrete production reduces waste disposal costs and …
Lead smelting slag (LSS) is a solid waste of lead production with multiple heavy metals that can irreversibly damage natural ecosystems. Therefore, it is imperative to creatively employ LSS to promote ecologically sustainable development. In this study, LSS-ground granulated blast furnace slag (GGBFS)-cement clinker (CC)-desulfurization gypsum (DG) road …
Effect of granulated lead smelter slag on strength of fly ash-based geopolymer concrete M. Albitara, M.S. Mohamed Alia, P. Visintina,⇑, M. Drechslerb a School of Civil, Environmental and Mining ...
Increased density of concrete with primary lead slag positively influenced the absorption capacity of gamma radiation, which is in good agreement with the results obtained by Al-Humaiqani et al. (2013). The results showed that partial substitution of barite with lead slag and fine natural aggregate with lead slag and steel shot, the linear ...
The utilization rate of lead slag in cement clinker is extremely low. Geopolymers and glass-ceramics have good stabilization effect on toxic elements. However, the extensive use of alkaline activators limits the large-scale application of geopolymers. High energy consumption of glass-ceramics should be considered.
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 …
Lead slag and serpentine aggregates improve the performance of concrete against gamma rays by improving damping and reducing radiation penetration. The LAC of the sample containing coarse serpentine and fine serpentine has increased significantly compared to the control concrete, and it means that serpentine aggregates can also be ...
S/S process is applied with mixing of lead slag with a specific binder such as cement, in order to convert hazardous constituents into less toxic forms (Conner and Hoeffner 1998). ...
Slag cement comes from ground granulated blast furnace slag (GGBFS). The substance is a by-product of steel manufacturing. ... This contributes to a denser concrete paste. Ultimately, these factors lead to a more robust concrete over time. Yet, extended hydration and setting times mean early strength (before 28 days) remains low. 3. Lower ...
The use of slag cement as a cementitious material dates back to 1774, when a mortar was made using slag cement in combination with slaked lime (Mather 1957). In 1862, a granulation process was proposed to facilitate removal and handling of …
It was found that the slump value of the GPC by using FA as a binder and partial replacement of washed river sand with granulated lead smelter slag (GLSS) shows slump value increases with ...
The use of lead slag in road construction and concrete will cause environmental risk of leaching toxic elements. The utilization rate of lead slag in cement clinker is extremely low. …
• Using both limestone and slag in combination can lead to significant reductions in the embodied CO 2 associated with concrete while providing excellent concrete.
The utilization rate of lead slag in cement clinker is extremely low. Geopolymers and glass-ceramics have good stabilization effect on toxic elements. However, the extensive use of alkaline ...
It should be noted that lead slag powder as a cement additive could produce more C–S–H, which would increase the flexural strength compared to the UHPC base-mix design. Fig. 4 shows the failure of UHPC samples under the bending test. The failure of the fiber-free samples occurred because it was very brittle. Thus, the sample broke after ...
Granulated lead smelter slag is an effective supplementary cementitious material. • Particle size has significate influence on compressive strength. • Mechanical properties of concrete with slag are similar to those with fly ash. • The addition of lead smelter slag results in a decrease of the drying shrinkage.
Lead-zinc slag can improve the durability and radiological properties of mortar and concrete mixes even for higher replacements and durability properties of SCC mixes for replacements up to 25%. Leaching, a major problem due to the dumping of lead-zinc slag, is effectively controlled when used to prepare mortar, concrete, geopolymer, and AAM.
Other studies investigated cement stabilization of the slag (de Angelis et al. 2002) after reducing the risk of excessive heat generation before disposal in the environment by converting lead into ...
DOI: 10.1016/J.CONBUILDMAT.2017.03.014 Corpus ID: 135952971; Experimental study on fly ash and lead smelter slag-based geopolymer concrete columns @article{Albitar2017ExperimentalSO, title={Experimental study on fly ash and lead smelter slag-based geopolymer concrete columns}, author={M. Albitar and M. S. Mohamed Ali and Phillip …
Alwaeli has demonstrated that the incorporation of granulated lead–zinc slag in concrete works as a shield to the gamma radiation, so it would properly fit in laboratories construction where radiation are generally used. A …
Sumajouw et al. [20] studied the behaviour of twelve fly ash concrete slender columns (175 × 175 × 1500 mm) subjected to axial compression and uniaxial bending. The key parameters of the study involved compressive strength (i.e., 40 MPa and 60 MPa), longitudinal reinforcement ratio (i.e., 1.47 and 2.95), and load eccentricity (i.e., 15, 35 and 50 mm) and it …
rials with lead-smelting slag, it was mentioned that lead-smelting slag was used to make concrete blocks, and the influence of lead-smelting slag on the strength of concrete blocks was obtained. Among them, the size of aggregate par-ticles was relatively large, usually ranging from a few milli-meters to ten or even dozens of millimeters [35 ...
This paper reports the findings from a laboratory evaluation of a metallurgical slag as a pozzolanic admixture for concrete. Lead blast-furnace slag is fumed in a batch process to remove base metal values after which the molten barren slag is water-quenched to produce a glassy, granular product. Chemical analysis shows the principal components ...
Today, cement and concrete are some of the most consumed materials after water throughout the whole world. About 4.1 billion tons of cement are fabricated annually (half a ton per person) and half of this amount is produced by China [5].In addition, >1 m 3 of concrete per person is produced with Portland cement each year [6].Today, Portland cement, Portland …
Using lead slag and lead-zinc tailings to prepare high-value glass-ceramic can realize the comprehensive utilization of solid waste and reduce the environmental pollution caused by lead slag landfill. Firstly, lead-zinc tailings and borax are used to melt and temper lead slag to improve its sintering performance. At 1450 °C, the lead slag melted and tempered by …
Lead-bearing solid wastes strongly retard the hydration of Portland cement.In this work, the effect of Pb(NO 3) 2 and PbCl 2 on the hydration of Portland cement and tricalcium silicate (C 3 S) was investigated. The results show that both Pb(NO 3) 2 and PbCl 2 prominently delay the end of the dormant period, the setting time of cement paste, and decrease …
The main aim of this study is to investigate the usability of granulated lead–zinc slag in making of concrete with good compressive strength and absorption properties for gamma …