In today's market, GGBF particles are very similar to the size of Type III cement particles but smaller than normal Type I cement particles. Companies give much thought to the names of brands that they own. Use of SCC overcomes the problem of concrete placement in heavily reinforced sections and it helps to shorten construction period. Independent operating combined mobile crushing station . As soon as molten 'slag' is modified in any way (including its composition, mineralogy and cooling history), it would cease to be 'slag' and would become a product (after all, any intervention costs something). It is the waste product of copper. Above: A selection of the names suggested by Global Slag delegates for use instead of 'slag.' The construction industry is the only area where the safe use of waste material (copper slag) is possible. Increasingly they need to work internationally too. Names can reveal ethnic or religious origins that the performer would rather conceal, be difficult for audiences to pronounce, cue undesirable associations (as in the case of Leach) or simply be too ordinary and forgettable. Slag cement, often called ground granulated blast-furnace slag (GGBFS), is one of the most consistent cementitious materials used in concrete. Due to industrialization enormous by-products are produced and to utilize these by- products is the main challenge faced in India. II. Concrete can deteriorate for a variety of reasons, and concrete damage is often the result of a combination of factors. Much time and money is invested in creating and researching potential names for new brands, exploring the pros and cons of an existing brand name where it is to be rolled out to a new geography, or working out how to migrate a brand name owned in one territory to an existing one owned elsewhere (e.g. Using fly ash in concrete is environmentally beneficial because it reduces the Portland cement (a major contributor of CO2) required in concrete. A good source of information on this question is ACI 233, "Ground Granulated Blast Furnace Slag As a Cementitious Constituent in Concrete." GGBS Concrete GGBS Proportions On its own, ground granulated blast furnace slag (GGBS) hardens very slowly and, for use in concrete, it needs to be activated by combining it with Portland cement. Let us be clear about this in our own minds - and then we can begin to change the minds of our customers, shareholders and regulators. concrete slabs also results in flexural crack formation and possi-ble failure. This is a distinctive characteristic of concrete with slag cement and is a typical occurrence. Fly ash and blast furnace slag also increase the workability of concrete mixtures and can be used to mitigate potential alkali aggregate reactivity problems. Self-compacting concrete is growing rapidly, especially in the precast market where its advantages are rapidly understood and utilized. Slag cement helps in two ways: 1) reduced permeability reduces the ingress of deleterious sulfates into the concrete and 2) slag cement does not contain tricalcium aluminate, and thus lowers the total amount available for reaction. A typical combination is 50% GGBS with 50% Portland cement, but percentages of GGBS  anywhere between 20 and 80 % are commonly used. The following summary discusses potential causes of concrete deterioration and the factors that influence them. By using these waste materials in concrete we can control cost of materials used in construction. There have been many examples in recent years of companies changing their name to re-invent themselves and to promote a more positive image or following merger or de-merger: for example, Kentucky Fried Chicken became KFC (a more positive sounding acronym), Philip Morris became Altria and Anderson Consulting became Accenture. Among those is steel slag which is produced as a waste material in the steel industry and has a negative impact on environment when disposed. In English-speaking countries, 'a slag' is a promiscuous woman, whilst to 'slag someone off' is to criticise them in an abusive and insulting manner. Remember: there is molten slag and slag products. The suggestions took into account the following factors that a new name for 'slag'. However, that would require a much longer discussion which would really only be of interest to a concrete technologist who would need to know what the concrete being made with the cement is being used for and what properties will be required of the cement. There are too many vested interests and there is no global slag-industry leadership to change the status quo. PDF | On Sep 15, 2014, Olusola Idowu and others published Enter title Effect of Improper Curing on Concrete Performance | Find, read and cite all the research you need on ResearchGate Following discussions at the 6th Global Slag Conference in Sydney in 2010, a number of preliminary suggestions were created (notwithstanding the research procedures outlined above). Meanwhile, the high replacement rate in slag can result in a weak binder interface between the cement and fly ash. There are two main problems with pouring concrete in cold winter weather: ... slag can cause the same effect. 'Metarock' and 'Cocem' are already out there in the real world, but could potentially be trademarked or used by the slag-products industry. Marathon to Snickers, Opal Fruit to Starburst), to exploit the significant economies of scale available in marketing communications. Les cendres volantes et le laitier de haut fourneau peuvent aussi améliorer la malléabilité du mélange de béton et atténuer les éventuels problèmes de réaction alcali-silice. Stainless steel slag is the waste industrial by product from stainless steel production. The word slag orginates from the medieval German word 'slagge', meaning 'to strike, with reference to the fragments produced by hammering or forging metal' (Chambers Dictionary of Etymology). Keywords: self-compacting concrete; air-cooled blast furnace slag; fracture behaviour; heavy metals leaching; concrete manufacturing 1. ABSTRACT:-The environment problems are very common in India due to generation of industrial by-products. Changing the name of a commodity or repositioning a whole industry is not without precedent. The one critical factor to be understood was that the term 'slag' would still be used in the industry, but solely as a term for a molten mass. Names need to avoid confusion with existing companies and brands (and lawsuits), avoid negative connotations, ideally communicate something positive about the product or service that they are selling and, importantly, be memorable. However, the word also has other meanings in the popular vernacular. PAST RESEARCHES ON STEEL … What a difference one word can make! Use of steel slag aggregate in asphalt concrete mixes Ibrahim M. Asi, Hisham Y. Qasrawi, and Faisal I. Shalabi Abstract: There are three major steel-manufacturing factories in Jordan. Whole industries are also repositioning themselves. The only potential problem with steel slag aggregate is its expansive characteristics and undesirable reactions between slag and components of concrete. Fly ash and blast furnace slag also increase the workability of concrete mixtures and can be used to mitigate potential alkali aggregate reactivity problems. © 2020 Pro Global Media Ltd. All rights reserved. Most concrete contains cement, some other types of cementitious material such as fly ash or slag cement, coarse aggregates such as gravel or limestone, and fine aggregates such as sand. may result in aesthetic, functional, or structural problems. The response was overwhelming and a selection of the suggestions is seen overleaf. re-branding is common in government and politics too. Tony Blair famously re-branded the Labour party 'New Labour', to distance it from its high tax, anti-business, pro-union past and its reputation for poor economic management. GGBFS should rather be ground blast furnace slag-granulate (GBFSG). Taking these factors into account, a small number of names were generated that could be used for different product streams - and different uses. Again, the hope is that a more positive image will boost industry sales. How to Solve Common Concrete Problems in Construction:Sep . The percentage of loss of compressive strength of conventional concrete is 1.76% and percentage of loss in weight by 2.58% when compared … The 'scrap metal merchant' of my childhood is these days a business engaged in 'metal recycling.' If the producer replaces GGBF slag pound for pound for cement, the mix would overyield. Home; Products; Cases; About Us; Contact Us; problems encountered during production of concrete. They didn't waste any time making the change. Slag is bi-product of Ferro alloys industries. During the production of iron and steel, fluxes (limestone and/or dolomite) are charged into blast furnace along with coke for fuel. Copper slag can be used in many applications such as concrete, landfills, Ballasts, bituminous pavements, tiles etc. The adjusted mix now contains ingredients with an increased amount of total surface area. cement.ca. 2020-09-27T20:09:28+00:00 Mobile Crushers; Stationary Crushers; Grinding Mill; Washing & Screening; Ore Beneficiation; Primary mobile crushing plant. Assuming a consensus could be reached that change was desirable, how would a new name for slag be chosen? We contacted a sales engineer at a GGBF slag supplier. It provides great opportunity to utilize it as an alternative to normally available aggregates (coarse and Fine) and cement. Mobile secondary crushing … It is actually a byproduct of iron production. The greater the percentage of GGBS, the greater will be the effect on concrete properties. Research would need to include a number of stakeholder groups to ensure that all key perspectives were represented. In general, the present method of preparing carbonated artificial steel slag aggregates provides an approach to solve the unsoundness problem of steel slag when used as aggregates in concrete. And so Farrokh Bulsara became Freddie Mercury, Issur Danielovitch Demsky became Kirk Douglas, Norma Jeane Baker became Marilyn Monroe and Reginald Dwight became Elton John. 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So, from molten slag, you might create the following slag-sourced products: Converter (air-cooled) - Converter Metarock. Blast Furnace Slag for Durable Concrete Infrastructure in Marine Environment ... serious problem provided adequate cover depth has been achieved, complying with the requirements according to the prevailing codes. The safe disposal of this waste is a lack, costly and causes environmental pollution. EXAMPLES OF CONCRETE STRUCTURES MADE WITH BLAST FURNACE SLAG CEMENT 2.1 Noordersluis IJmuiden The first project in The Netherlands in which blast furnace slag … However, for reasons indicated earlier, names do matter, because of what they say about somebody or something. Studies show that as surface area increases, bleeding decreases. Contrary to the assumptions of modern economics, people do not have access to perfect information when they make decisions and nor do they always make rational choices: Investment bubbles are testament to these facts. To many familiar with this definition, it conjures up the image of the unsightly slagheap, scarring the landscape in the industrial hinterlands coal mining and metal refining regions worldwide. To achieve this goal in concrete pavement, various substitutes were found to be replaced with natural aggregates of concrete. cement.ca. copper slag concrete is yet to get momentum in our country. 1. One group claims that since slag is finer than portland cement, a finisher brings more fines to the surface after straight edge and floating and thus creates a less durable surface. Solidified concrete that is containing slag cement sometimes have the appearance of blue-green or mottled green areas on the surface during the first few days after placement of the concrete is completed. For slag, appendix of 989 (Specification for Ground Granulated Blast-Furnace Slag for Use in Concrete and Mortars) (ASTM, 1993) suggests using either the 0.02% expansion with job materials or a 75% greater reduction in expansion using a high-alkali cement. Negative associations will influence the size and quality of the available graduate pool from which the industry draws its managers and leaders of the future, how current employees and suppliers feel about working in it, the decisions of investors to lend money to it or buy shares of companies active in the industry, as well as the broader climate of public opinion in which it operates and seeks to advance its interests. Ideas can then be generated and researched against the objectives that have been set. In a word, 'No.' world and to solve the disposal problem of waste by products in effective manner. Our experts suggest that the change in bleeding is why it's more difficult to accurately judge when to get on the slab for the final finish. Of course it is difficult to place a value on these effects in the case of the slag industry, but they are likely to be non-trivial. Les cendres volantes et le laitier de haut fourneau peuvent aussi améliorer la malléabilité du mélange de béton et atténuer les éventuels problèmes de réaction alcali-silice. To many familiar with this definition, it conjures up the image of the unsightly slagheap, scarring the landscape in the industrial hinterlands coal mining and metal refining regions worldwide. Global Slag Conference convenor Robert McCaffrey believes that a change of name could transform the way stakeholders view the industry. For these reasons, it is always wise to research potential names for new brands or new names for an existing one. When the slag replacement rate is 20%, a superior gradation is formed between ordinary crushed stone aggregate and slag aggregate, which can promote the concrete strength. Negative associations can have significant consequences. The achieved results indicate that the hydraulicity of the cupola slag is incomparable with the hydraulicity of the blast-furnace slag; this may be associated with the problems that arise when the slag of this type is used in the building industry. It would need to work internationally, be short, memorable and ownable. The use of slag cement with a Type I portland cement can provide equivalence to a Type II … Researching alternative names does not guarantee success, but it does improve the odds, which is why large FMCG companies invest so much on such research. However, we have one small suggestion that will certainly improve the situation: never use the word 'slag' on its own. In our area, people are discussing the benefits or disadvantages of finishing exterior concrete containing ground granulated blast furnace (GGBF) slag. When the strength is measured, it is found that the concrete replacing crushed stone with unstable steel slag … The trouble with 'slag' According to the online Oxford English Dictionary, the word 'slag' is a noun, meaning 'stony waste separated from metals during smelting or refining of ore'. Qualitative research would involve both interviews (for example with CEOs) and focus groups (for example with science students or employees). None of the associations of this word in the public consciousness is positive. cement.ca. As David Hume, that great Enlightenment philosopher and famous empiricist put it, 'Reason is...slave of the passions and can never pretend to any other office than to serve and obey them.'. 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