The blend with 50% of steel slag has the maximum strength and stiffness at 4% cement content. Slags (especially steel slag) can be used as a partial substitute for limestone and some other natural raw materials for clinker (cement) manufacture and compete in this use with fly ash and bottom ash. The viability of combining waste slag produced from steel (Basic Oxygen furnace) and iron (Blast Furnace) industry as replacement of cement in cement mortars was investigated. Today, iron and steel slag is used in many fields where its unique characteristics can be put to effective use. Brad Fronek. Molecular simulations also reveal steel slag increases the electrostatic interaction and bonding effect with cement. Then, this ground steel slag powder was utilized in cement-based materials in following experiments. The majority of the demand for these products comes from the field of cement. The unconfined compressive strength (UCS) change trend at 7d is positively related to cement content. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. See all articles by this author. the standard procedure followed to characterize the standard cement is adopted during this section of tests and best material composition was received. Besides, the minimum mass losses of samples are those with 50% of steel slag. It is a recovered industrial by-product of an iron blast furnace. Portland cement CEM I 42.5N and alkali activated hybrid cement H-CEMENT were used as the binder. The physical and chemical characteristics of steel slag are summarized, and the pretreatment progress of steel slag in steel industries as recycled raw material was introduced. In pace with the steel slag amount increases, the freeze resistance and dry shrinkage performance of samples increase, but the temperature shrinkage performance decreases. According to the results, compressive strength improves with the increase in steel slag ratio up to 25 per cent but increasing the steel slag ratio above 25 per cent decreases compressive strength. Slag cement was originally used as mortar in masonry projects. Steel slag mixture has sound economic benefit and potential great environmental benefit compared to limestone mixture. tpsgc-pwgsc.gc.ca. The addition of steel slag into the road base is feasible, with the best overall performance obtained at the content of 50%. In this article we […] The blend with 50% of steel slag has the maximum strength and stiffness at 4% cement content. دسترسی به تمام منابع از طریق افزونه فری‌پیپر برای همیشه رایگان خواهد بود. Besides, the minimum mass losses of samples are those with 50% of steel slag. In such preparations OPC clinker is about 15-30%, steel-slag around 30-40% and blastfurnace slag is around 40-50%. © 2020 Elsevier Ltd. All rights reserved. 3. It is a recovered industrial by-product of an iron blast furnace. In pace with the steel slag amount increases, the freeze resistance and dry shrinkage performance of samples increase, but the temperature shrinkage performance decreases. Steel slag has a great potential application in cement and concrete production, for the reason that steel slag contains hydraulic components, such as C 2 S and C 3 S. But f-CaO and f-MgO in steel slag will cause poor volume stability and RO phase with little hydration activity has relatively high content in steel slag [, , ]. Besides, the minimum mass losses of samples are those with 50% of steel slag. Steel slag increases the hydration products, meanwhile reinforces the electrostatic interaction and bonding with cement. The microstructure and elements distribution were characterized by the scanning electron microscopy (SEM) and the energy dispersive X-ray spectroscopy (EDS). Steel slag mixture has sound economic benefit and potential great environmental benefit compared to limestone mixture. تبلیغات Steel slag, the most commonly discharged metallurgical slag from the steel industry, contains CaO, SiO 2, and Fe 2 O 3 in percentages that allow its use as a raw material in the cement industry. or ?ladle slag? Compressive strength tests were performed on samples containing slag ratios of 0, 25, 50, 75 and 100 per cent and cement contents of concrete 200, 300 and 350 kg/m3. Each year, about 45 million tonnes of ferrous slag (iron and steel slag) is generated in Europe. سریع و رایگان دانلود کنید. In an engineering project, production process control of steel slag aggregate is required concrete, agricultural,... Into the road base is feasible, with the best overall performance can be put effective! Oh 44115 1960 East 24th Street, Cleveland State University, 1960 East 24th Street, Cleveland State University 1960... 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