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vestigated the possibility of using a carbonated LF slag as a fine aggregate in concrete. The slag was treated with CO. 2. to reduce the free lime content while binding gase- ous CO. 2. into solid carbonates. The carbonated LF slag was used as a fine aggregate in zero-slump press-formed compact mortar samples and compare to similar samples
In this study, the use of steel slag as fine andor coarse aggregate in concrete is investigated. For this purpose, 12 different concrete mixtures with different watercement ratios of 0.40, 0.55 and 0.70 which include steel slag aggregate as
copper slag as fine aggregate on the properties of normal concrete. Akihiko and Takashi 3 investigated the use of slag from copper smelting as a fine aggregate in concrete. From mortar strength tests with a cementslagwater ratio of 120.55, the ball milled slag gave a higher strength. The effects of using several types of slag on mortar ...
grade 100 slag cement concrete. The objective of the current research project was to quantify the strength development and deicer scaling resistance of grade 120 slag cement concrete over a range of portland cement sources, aggregates and curing conditions used in Wisconsin.
The concrete product with ferrochrome slag as coarse and fine aggregate showed excellent results with respect to various fresh and hardened concrete properties and were found to be suitable for general purpose concrete work. fer KeyWords Industrial solid waste, Ferrochrome slag, Concrete, compressive strength. 1. INTRODUCTION
Aug 25, 2020 The basic objective of this investigation is to examine the characteristics of concrete using Ground granulated blast-furnace slag GGBS as
Apr 08, 2019 Slag cement, previously known as ground-granulated blast-furnace slag , has been used in concrete for well over 100 yers . The first recorded production in the US of blended cement containing both slag and portland cement was in 1896 .
Jun 16, 2020 ber-reinforced concrete 10,11. In a large particle form, steel-slag could be employed as a coarse aggregate or a ne aggregate to produce concrete 12,13. Compared with the crushed limestone aggregate, the steel-slag aggregate could generate a denser microstructure of concrete leading to better mechanical resistances 14,15.
Slump Value for Recycle Concrete Aggregate and Steel Moreover, the replacement of SS by fine aggregate indicates that Slag there is an improvement at the percentages 15 and 25 compared to the original concrete at 28 days.
Provide coarse aggregates for Portland cement concrete in accordance with Table 902-1, Table 902-2, and this subsection. A. Slag Coarse Aggregate. Use slag coarse aggregate consisting of iron blast furnace slag or reverberatory furnace slag with a dry loose measure unit weight of at least 70 pounds per cubic foot in accordance with MTM 123. B.
2. State of the art on steel slag aggregate concrete The production of concrete using steel slag has become popular in the last couple of decades. It has been reported from different quarters that steel slag aggregate has somewhat similar properties as the conventional aggregates Maslehuddin et al. 2003, Subathra Devi and Gnanavel
concrete and natural aggregate concrete, in high strength concrete series. Slag is a waste metallic material which might have long term delayed reactions, further experiments would be necessary to evaluate the durability of concrete made by steel slag aggregates. The following size of slag available from JSW Steel Ltd,0-4mm,4-
Flexural strength of concrete is calculated by using the formula, CONCLUSION Through literature review, it was concluded that the use of steel slag as replacement of coarse aggregate is beneficial and an effective construction material. The properties of steel slag is similar to the coarse aggregate. The concrete mix is designed according to ...
copper slag by various percentages on the strength and durability properties of concrete. 3.2. Coarse Aggregate The aggregate size bigger than 4.75 mm, is considered as coarse aggregate. The sand particles should be free from original bed rocks. Coarse aggregate are available in different shapes like
blast-furnace slag is also used as fine or coarse aggregate. The aggregates are usually washed and graded at the pit or plant. Some variation in the type, quality, cleanli-ness, grading, moisture content, and other properties is expected. Close to half of the coarse aggregates used in portland cement concrete in North America are gravels
slag aggregates in concrete The use of slag aggregates from iron and steel production in construction dates back to the Romans who used crushed slag from the crude iron production to build their roads. Nowadays slag aggregates are seen as value added construction materials
Air-cooled iron slag and steel slag are used primarily as aggregates in concrete air-cooled iron slag only asphaltic paving, fill, and road bases both slag types also can be used as a feed for cement kilns. Almost all GGBFS is used as a partial substitute for portland cement in concrete mixes or
This document contains recommendations for best practices related to the use of air-cooled blast furnace slag ACBFS as coarse aggregate in concrete pavements. It is primarily based on the results of a review of available literature regarding the production and use of ACBFS as coarse aggregate in concrete pavements, information provided ...
The slag produced is very angular and porous with a rough surface texture Figure 1. The chemical properties of the aggregates vary depending on the furnace, feed stock and slag formers used to produce the steel. The aggregate formed from the slag is comprised of calcium oxide CaO, silicon oxide SiO 2, iron oxide Fe 2 O 3
The cylindrical concrete sample with the dimension of 200 x 100 mm was used in the 2nd stage. In addition, steel slag was used in the 2nd stage besides the granite aggregate. In fact, three different percentages of steel slag are involved 50 Steel Slag and 50 Granite 30 Steel Slag and 70 Granite and 70 Steel Slag and 30 Granite.
Suitability of using steel slag SS as substitute for sand in concrete was investigated. SS was collected from a dump site, crushed manually and sieved through between sieves No. 4 and 200. SS was characterized using XRF and XRD techniques. Concrete of mix ratio 124 was batched by weight with slag replacement levels of 0 to 100 of sand at 25 interval and the concrete specimens cubes and ...
300,000 tons of molten slag are to be produced for 10 years, and the prefectural government has decided to use the entire amount as aggregate for concrete. Basic studies on the application of municipal solid waste and Teshima molten slag to concrete have been conducted. Molten slag is characterized by low water retentivity since it is vitreous.
The test results concluded that concrete made with EAF oxidizing slag and fly ash Mix C had greater strength and durability characteristics when compared to Mix A and Mix B. Based on the overall observations, it could be recommended that EAF oxidizing slag and fly ash could be effectively utilized as coarse aggregate replacement and cement ...
a Carnegie report, Furnace Slag in Concrete, established a position for slag as a suitable product for use as an aggregate in concrete. In 1917, it was evident that slag had become a valuable product and producing companies would benefit from a more united promotional effort. It was also apparent that slag
At the end of 28 days the concrete containing 40 steel slag shows the highest compressive strength as 40.8Nmm2. The strength improvement is 15.909 than the control concrete at the 40 replacement level. The steel slag aggregate sample gave good strength than the rest, the reason might be the water-cement ratio and the bond
The hardened properties of concrete using ferrochrome slag aggregate are studied by casting cubes, cylinders and prisms.Fresh concrete being in slurry form requires good moulds to shape it to required form. So the moulds ought to be inflexible and solid to hold the heaviness of
This report presents available information regarding the use of air-cooled blast furnace slag ACBFS as coarse aggregate in concrete pavements. The report discusses ACBFS aggregate production and properties, and the properties of concrete produced with ACBFS coarse aggregate.
Keywords Natural coarse aggregate, Iron slag, Iron slag aggregate, concrete, cement 1. Introduction Iron slag is a by-product of the iron and steel making process. Steel cannot be prepared in the Basic Oxygen Furnace BOF or in an Electric Arc Furnace EAF without making its by-product, steel slag 1. The use of Iron slag aggregate in ...
Iron Blast Furnace Slag Aggregate for Concrete in 1977 and fine BF slag aggregate as JIS A 5012 Water Granulated Iron Blast Fur-nace Slag Aggregate for Concrete in 1981. Thereafter, the two were unified as JIS A 5011-1 Slag Aggregate for Concrete, Part 1 Blast Furnace Slag Aggregate. Then, in 1983, the Japan Society of Civil
Keywords Concrete, Fine aggregate, Manufactured sand, Copper slag, Eco-friendly concrete 1. INTRODUCTION Concrete is the broadly accepted building element which forms a homogeneous mass after hydration. It is composed of aggregates and paste matrix. Major constitute of concrete is aggregates with a stake of about 75 of volume 1. Increased ...
The control mixture contained regular concrete sand as the fine aggregate and pelletized blast-furnace slag as the coarse aggregate. The cementing materials were the same for both mixtures and consisted of 85 portland cement, 7.3 granulated blast-furnace slag, and 7.7 silica fume.
Mar 18, 2011 This paper aims to investigate the possibility of utilizing steel slags produced in Croatian plants as a concrete aggregate. Aggregate properties were determined on coarse slag fractions 48, 816 mm according to the relevant European Standards. Considering the obtained results, slags were specified in accordance with the classes as given in the main European standard for aggregates ...
The use of blast furnace slag aggregates in concrete by replacing natural aggregates is a most promising concept because its impact strength is more than the natural aggregate. Steel slag aggregates are already being used as aggregates in asphalt paving road mixes due to their mechanical strength, stiffness, porosity, wear resistance
Jun 26, 2020 molten steel from impurities in the steelmaking furnace, and it is used as coarse aggregate in concrete. It was found that steel slag aggregate SSA has superior physical and mechanical properties as well as lower carbon footprint and reduced negative environmental e ects 7,8. The compressive strength of concrete containing steel slag at 28 days was about 35 higher than the reference concrete
slag, and lightweight aggregates that usually occupies approxi-mately 60 to 75 of the volume of concrete. Aggregate properties significantly affect the workability of plastic concrete and also the durability , strength, thermal properties, and density of hardened concrete. This Bulletin describes types of aggregates normally used