Steel slag

Nowadays, in Vietnam as in the world, traditional building materials are increasingly scarce while industrial waste is produced more and more. In this paper, the author uses steel slag, a byproduct of steelmaking processes, for replacing crushed aggregate in base or subbase course. Steel slag-stone dust aggregate (70% steel slag and 30% stone dust) are treated with a cement content of 4%- 8%.

16p viohoyo 25-04-2024 4 1   Download

This study aims to present about national and international regulations, standards reletated to environment parameters when using steel slag as building materials and backfill materials. As a part of this research, environmetal tests were undertaken to determine the hazardous components, natural radioactivity and potential of leaching heavy metals of steel slag samples.

8p visharma 20-10-2023 4 2   Download

Steel slag, one of the huge industrial waste sources, which has many outstanding advantages (hardness, roughness, angularity, and abrasion resistance) has been used as an aggregate in asphalt concrete to bring many benefits.

7p visharma 20-10-2023 9 4   Download

In addition, chemical components of Formosa GBFS and other Vietnamese products are generally similar to those Japanese and European products and the inorganic hazardous components of Formosa GBFS are evidently lower than threshold values by Vietnamese Technical Regulation and therefore, Formosa GBFS satisfy environmental requirements when used as an alternative geo-material in construction in Vietnam.

10p nhanchienthien 25-07-2023 5 4   Download

Due to rapid industrialization and modernization, a large number of both fly ash (FA) and ground granulated blast furnace slag (GGBFS), both by-products from thermal power plants and steel factories, are increasing day by day. Thus, recycling these industrial wastes to produce lightweight foamed concrete (LFC) was investigated in this study.

8p viargus 20-02-2023 8 2   Download

This study aims to characterize and investigate steel slag for the removal of its persistent organic pollutants (measured as COD) from pulp mill wastewater. Steel slag and its NaOH-modified states were characterized by Fourier-transform infrared spectroscopy (FT-IR), Brunauer-Emmett-Teller (BET) surface area analysis, Barrett-Joyner-Halenda (BJH) pore size, and volume analysis.

16p vidudley 20-02-2023 5 2   Download

Samples of Granulated blast furnace slag (GBFS) from Formosa steel plant (called as Formosa GBFS) were collected and used for several testing series regarding potential application as an alternative material in construction and civil works. Unhydrated GBFS particle shows river sand-like shapes by all appearances with more angular and therefore, it shows higher shear strength than those of natural sand.

14p viplato 05-04-2022 12 1   Download

In this study, physico-mechanical and chemical properties of GBFS produced by Formosa steel plant in Vietnam (named as Formosa GBFS) were observed and compared with those of GBFS produced in Japan. Such comparisons were also performed with a granite rock-crushed sand which is widely applied as an alternative construction material to natural sand in Thua Thien Hue province.

4p viwendy2711 05-10-2021 11 1   Download

"Waste treatments waste" – the reuse of waste could bring a number of environmental and economical benefits such as reducing waste and treatment cost in many industrial sectors. This study made use of steel slag as treatment material for polluted waste.

9p tamynhan4 06-09-2020 7 1   Download

Nowadays, wastewater from various industries contains a large number of harmful heavy metals and coloring agents, which have to be removed to restore the quality of the environment. In this study, the removal of nickel ions (Ni2+) and methylene blue (MB) from the aqueous solution using steel slag as a low cost adsorbent was investigated. The chemical and mineralogical compositions, as well as the surface area of slag, were analyzed by using X-ray fluorescence spectroscopy, X-ray diffraction, and the Brunauer-Emmett-Teller method (BET).

7p caygaocaolon1 13-11-2019 30 1   Download

In this paper, we aim to analyze the influence of the accelerated carbonation condition in the laboratory on the physio-chemical properties of carbonated steel slag. Materials composition was characterized by using different analysis techniques of XRD, SEM, TG and others measurements of the physio-properties (density, loss on ignition L.O.I.) were also realized with regard to the requirement of national standard TCVN 7570:2006 for concrete aggregate.

8p vidonut2711 08-11-2019 17 0   Download

A new type of environment friendly polymer-modified waterproof mortar (PMWM) was developed through adding ethylene vinyl acetate (EVA)/vinyl acetate–vinyl ester of versatic acid (Va–VeoVa) mixture (re-dispersible emulsion powder), mine tailings, quartz sand and additives to the eco-cement, which was prepared by grinding the mixture of steel slag, blast-furnace slag, fly ash and activator. The optimal material proportioning of PMWM was obtained based on the Orthogonal experiment: re-dispersible emulsion powder, 11 wt.%; cement–sand ratio, 1:3.

4p christian2605 11-10-2019 17 1   Download

This paper deals with using stainless steel reducing slag (SSRS), a byproduct generated from stainless steel making process, as a cement substitute in production of soil-based controlled low-strength material (CLSM). In the CLSM mixture, surplus soil and river sand were blended well together with a sand-soil proportion of 6:4 by volume in order to produce fine aggregate. Totally, twelve mixtures were prepared for experiment when we changed in turn percentages of Portland cement replacement with SSRS of 0%, 10%, 20%, and 30% by weight and the water-to-binder ratio of 3.4, 3.6, and 3.8.

5p cathydoll5 26-02-2019 18 0   Download