What is Air Cooled Blast Furnace Slag? Air Cooled Blast Furnace Slag (ACBFS) is a versatile construction aggregate that provides superior compaction and skid resistance plus cost savings over mined aggregate. It can be safely used in a variety of applications including concrete, asphalt, sub-base, bedding, and backfill.
This study investigates the effect of the utilization of steel slag by-product aggregates (air- and water-cooled slag) as concrete aggregates on the behavior characteristics of concrete. Various …
BOS slag is produced by the basic oxygen steelmaking (BOS) process – also referred to as the basic oxygen furnace (BOF) process, as air cooled steel slag (ASS) or as LD-converter slag. Production and Processing. BOS slag is formed during the conversion of hot liquid iron from the blast furnace into steel in a basic oxygen furnace.
This report presents available information regarding the use of air-cooled blast furnace slag (ACBFS) as coarse aggregate in concrete pavements. The report discusses …
The use of slag in concrete and mortar has given good results, and it has been concluded by looking at previous studies that the best percentage for using slag as coarse aggregate ranges from 30% ...
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 …
Cooled Blast Furnace Slag. This study gives the results about optimum replacement usage of Air Cooled Blast Furnace Slag (ACBFS) in the concrete to increase the strength …
A cupola furnace is the most frequently used furnace aggregate for cast iron production. A by-product of the production of cast iron in cupola furnaces is cupola slag. Its amount is 40–80 kg per 1 tonne of the produced cast iron, and that is one of the reasons why this material is not as favoured as, for example, the blast-furnace slag. The purpose …
Use of Air-Cooled Blast Furnace Slag as Coarse Aggregate in Concrete Pavements . Final Report . Report No. FHWA-HIF-12-008 . March 2012
In turn, the slag that is not intended for this purpose is usually slowly cooled to reduce process costs, and is called air-cooled blast furnace slag (or simply air-cooled slag – ACS). Usually, ACS has little or no binding properties and is used as aggregate in …
These findings suggest that air-cooled blast furnace slag can be used as supplementary cementitious material for the production of self-compacting concrete, with …
uses both air cooled and water cooled slag for the partial replacement of coarse and fine aggregate respectively-) or can be inferred based on the supplier's de tails and mate-
The results were generally positive, allowing the use of EAF slag as aggregates in concrete. However, further care is needed to ascertain the safe, ... In modern installations, spraying water onto air-cooled slag, without creating rapid cooling, has been found to cause slag fracture. In this way, two goals are achieved; the first is that the ...
Air-cooled and crushed steel slag, for example, possesses all the good physical and mechanical properties that are required for making concrete, even high-performance concrete. ... mathematical and mechanical modeling for slag aggregate use as an aggregate in concrete. Steel slag is used as an example in the criteria deduction. The …
Lime and sand in autoclaved aerated concrete (AAC) were replaced by air-cooled slag (AS). The compressive strength and the type and nature of the hydration products were studied for samples autoclaved at 8 bar for different periods of times: 2, 6, 12 and 24 h. The hydration reactions were monitored by determining free-lime contents and …
The slag aggregates used in the present study were supplied by Australian Steel Mill Services Pty. Ltd. in NSW, Australia. As Fig. 1 (a) and (b) illustrate, two different grades of coarse slag aggregates, including a finer aggregate with a 10-mm nominal maximum size (Ф) and a larger aggregate with a 20-mm nominal maximum size (Ф), …
Crushed expanded slag is angular, roughly cubical in shape, and has atexture that is rougher than that of air-cooled slag. The porosity of expanded blast furnace slag aggregates is higher than ACBFS aggregates. ... "Ground Iron Blast-Furnace Slag for Use in Concrete and Mortars," AASHTO Designation: M302-86, Part I Specification, 14th …
Lime and sand in autoclaved aerated concrete (AAC) were replaced by air-cooled slag (AS). The compressive strength and the type and nature of the hydration products were studied for samples autoclaved at 8 bar for different periods of times: 2, 6, 12 and 24 h. ... The air-cooled slag (AS) used throughout this investigation was obtained …
Blast furnace slag aggregate comes in two forms: Air cooled blast furnace slag, results when molten slag from a blast furnace slag cools slowly by ambient air (as opposed to rapid quenching), and is processed through a screening and crushing plant for use principally as a construction aggregate. Air cooled slag is not cementitious.
The EAF slag concrete density increased as the percentage of slag-aggregate substitution increased and the cooling process was very ... Perera, R. Use of Air-Cooled Blast Furnace Slag as Coarse Aggregate in Concrete Pavements. Final Report. U.S. Department of Transportation, Federal Highway Administration, 2012; …
In this work, the effects of replacing the aggregates of self-compacting concrete by air-cooled blast furnace slag have been analysed. Different mixes have been manufactured by substituting the fine and coarse natural aggregates by air-cooled blast furnace slag. The fracture energy and the tensile and compressive strength have been …
Another study by Sabapathy et al. focused on the use of steel slag as an aggregate in concrete . They concluded that air-cooled steel slag, which has a low amorphous silica content and a high ferric oxide content, may not be suitable for blended cement production. However, they found that utilizing steel slag as an aggregate in …
On the other hand, upon replacing sand with the fine portion of raw aggregates, air-cooled slag concrete shows a further increase in compressive strength of up to 6%, this is due to the concave ...
Morphology characteristics of mix aggregates with crushed air-cooled blast furnace slag (SCR) and crushed limestone (LCR) with 5–20 mm and 20–40 mm gradation were represented by numerical parameters including angularity number (AN) and index of aggregate particle shape and texture (IAPST). The effect of mix aggregates containing …
air-cooled blast furnace slag. concrete. structure. physical and mechanical properties. Author Information. Show +. 1. Introduction. Most of the production and non …
This study investigates the effect of the utilization of steel slag by-product aggregates (air-and water-cooled slag) as concrete aggregates on the behavior characteristics of concrete.
It has been more than 30 years since the use of blast furnace slag as concrete aggregate was included in JIS; however, it is not very popular today, and the annual sale of slag for aggregate use of Nippon Steel & Sumitomo Metal Corporation stays at the level of one million tons. With the latest trend toward a recycling oriented society, however, effective …
In concrete aggregate use, the air cooled slag offers properties of excellent bond with the cement, freedom from deleterious particles and alkali reactions, volume stability and durability, good concrete strengths and fire resistance superior to that obtained with other normal weight aggregates. The slag aggregate concretes are …
This document contains recommendations for best practices related to the use of air-cooled blast furnace slag (ACBFS) as coarse aggregate in concrete pavements.
This study gives the results about optimum replacement usage of Air Cooled Blast Furnace Slag (ACBFS) in the concrete to increase the strength properties.
