The physical, chemical, and mechanical characteristics of concrete change with heat-fire. The effect of thermal load on Slag cement concrete output must be measured because of the crucial role of ...

Efflorescence which severely occurs in alkali-activated slag cement can cause reduction of strength and durability due to calcium leaching. In the work, efflorescence characteristics in pavement containing red mud which can be affected by strong alkaline were investigated through various tests such as compressive strength, porosity, absorption, …

However, slag from incineration plants may contain harmful elements that adversely affect the physical, chemical and mechanical properties of cement composites. This …

of OPC and slag concrete of cement slag mix ratio 85:15, 70:30 and 55:45 have been studied in ... Chloride ions may cause adverse effect on hardened concrete in variety of ways. It may attack concrete in also different forms. It is generally attributed to the formation of

The authors emphasize that waste aggregate (slag) can be effectively used in the production of concrete after appropriate processing that reduces the risk of adverse effects. Discover the world's ...

In particular, the utilization of slag cement has been identified as a highly efficient approach for mitigating the adverse effects across several categories. This finding provides evidence for the adoption of environmentally friendly cement alternatives to …

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An example of this influence is the release of hydrogen during reactions, which causes swelling and cracking of the concrete and reduces its mechanical strength. The authors emphasize that …

In this review, steel slag usage in the cement and concrete industry and its environmental effects were examined. Also, its physical and chemical structure, its effect on the characteristics of ...

The utilization of steel slag as a mineral additive in concrete has been the subject of research aimed at assessing its impact on concrete's properties such as compressive …

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 (SCMs) and aggregates. However, they have some adverse effects that could significantly limit their applications when used in cement-based materials.

Adverse Effects of Using ... cement and electric furnace ferronickel slag, and the environmental safety concerns, due to the leaching of heavy metals from copper slag and lead-zinc slag.

By using an appropriate amount of water-reducing agent, the adverse effects of NS on the workability of cement mortar can be mitigated [106]. NS increases the water demand of cement due to its increased yield stress and plastic viscosity [116]. Agarwal et al. [117] summarized the impact of NS addition on the water absorption properties of RC ...

Moreover, the content of Al 2 O 3 also influences the sulfate resistance of slag concrete. The influence of MgO as a replacement of CaO seems depending on both the basicity and the MgO content of slag. Variations in the MgO content up to 8-10% may have little effect on strength development, but high content have an adverse effect.

Furnace Slag (GGBFS), Hydraulic Slag Cement, Lafarge Slag, Litex™ Lightweight Aggregate, Metallic Slag, NewCem®, Pelletized Slag, ... Ingestion may cause adverse effects. Chronic Symptoms: Long term exposure to respirable crystalline silica results in a significant risk of developing silicosis and other

DOI: 10.1016/J.CONBUILDMAT.2021.122783 Corpus ID: 233572570; Steel slag and its applications in cement and concrete technology: A review @article{Gencel2021SteelSA, title={Steel slag and its applications in cement and concrete technology: A review}, author={Osman Gencel and Omer Karadag and Osman Hulusi Oren and Turhan Bilir}, …

A retardation effect on the hydration process was observed in blended cement pastes with medium (43.76%) and high (58.95%) carbonated converter steel slag powder due to the presence of the high ...

In terms of safety, there are issues with the soundness of steel slag, the alkali-silica reaction involving cement and electric furnace ferronickel slag, and the environmental …

Slag Cement Safety Data Sheet According To Federal Register / Vol. 77, No. 58 / Monday, March 26, 2012 / Rules and Regulations Revision Date: 06/26/2024 Date of Issue: 09/11/2012 Version: 3.0 06/26/2024 EN (English US) 1/7 SECTION 1: IDENTIFICATION 1.1. Product Identifier Product Form: Mixture

In this study, we propose the use of local solid waste titanium slag (TS) as a low-hydration-activity filler and water-reducing mineral admixture to mitigate the adverse effects of MK in Portland cement. The hydration process and performances of the blended cements containing ordinary Portland cement (OPC), MK and/or TS were analysed.

• The alumina in the slag cement can react with more of the finely divided limestone in Type IL cement to form additional carboaluminatehydrates ... than Type I+SCM, due to nucleation effects of fine limestone particles and due to formation of additional carbo-aluminates. Background–Portland limestone cement in Europe

The article deals with adverse effects of using metallurgical slags in concrete. Despite a very long list of references, the article itself is rather sketchy.

Fiber reinforced concrete (FRC), a cement-concrete reinforced with many small fibers which are distributed randomly in the concrete during mixing, ameliorated concrete properties in all directions ...

As shown in Fig. 9, the early compressive strength of the concrete with steel slag is lower than that of the pure cement concrete, indicating that the positive effect of lowering W/B on the early strength is weaker than the adverse effect of steel slag. The concretes with 15% and 30% steel slag have similar early compressive strengths.

Particular attention is drawn to the adverse effects of poor early curing of slag cement concretes with respect to surface scaling of concrete. 2. Studies of site structures The quality and performance of concrete in large, site-stored blocks and in actual structures have been determined by testing drilled cores taken from a number of locations ...

CHAPTER 6—EFFECTS ON PROPERTIES OF FRESH CONCRETE, p. 8 6.1—Workability, p. 8 6.2—Time of setting, p. 8 6.3—Air entrainment, p. 9 6.4—Bleeding, p. 9 ... 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

Using steel slag (SS) as cementitious material and fine aggregate in concrete is an effective and environmental method for SS consumption and cost reduction. In this paper, SS was recycled in large volumes in concrete as partial cementitious material and fine aggregate. The compressive strength and reaction mechanism of cementitious material with different SS …

However, exceeding certain threshold temperatures (70 °C) and pressures (0.55 MPa) had adverse effects. Similar findings have been reported in other studies [28, 30]. ... Steel slag, cement, and lime in dry powder forms were initially pre-mixed for 60 s, ensuring raw material homogeneity. Subsequently, a slurry was created by mixing these ...

This is to certify that the work which is being presented in the project title "EFFECTS OF COPPER SLAG ON CONCRETE" in partial fulfillment of the requirements for the award ... in availability of material and also creates adverse effect on the environment. Unfortunately, production of cement involves emission of large amounts of carbon ...

The results indicate that the use of 5% copper slag in lieu of portland cement would yield a similar performance as the control mixture, especially at low water-to-binder ratios of 0.5 and 0.6. Higher copper slag (13.5%) replacement for cement resulted in adverse effects on concrete strength.