(57) [Summary] The present invention relates to a building material enabling a wide range of applications, obtained by using crushed glass from recycled glass or blast furnace slag as an aggregate of a casting material bonded with a bonding material. .
A recycled blast furnace slag, lightweight and porous, used as a media in effluent plants. The material filters and promotes bacteria for the breakdown of waste products in raw water treatment plants.
Granulated blast furnace slag Just like air-cooled blast furnace slag, this slag has a hydraulic property and there is no risk of alkali-aggregate reaction. Because of the powerful latent hydraulic property that results from fine grinding, this slag is used in products such as Portland blast furnace slag cement.
Additionally, blast-furnace slag was also used as the replacement of cement on mass basis at the replacement ratio of 50% to reduce the amount of cement used and provide savings. The water-binder (w/b) ratio and PET-binder (PET/b) ratio used in the mixtures were 0.45 and 0.50, respectively.
Granulated blast furnace slag is a glassy granular material that varies, depending on the chemical composition and method of production, from a coarse, popcornlike friable structure greater than 4.75 mm (No. 4 sieve) in diameter to dense, sand-size grains passing a 4.75 mm (No. 4) sieve. Grinding reduces the particle size to cement fineness ...
This paper presents the results of experiments conducted to produce green structural lightweight concrete by using oil palm shell (OPS) as coarse aggregate, and ground granulated blast furnace slag (GGBFS) as a supplementary cementing material at 30%, 50% and 70% replacement of cement, and exposed to different curing conditions.
Blast Furnace Slag Blast furnace slag is an industrial byproduct of iron produced in a blast furnace. This slag consists primarily of silicates and aluminosilicates of lime and other bases. (2) The Bureau of Mines reports that 14 million metric tons (t) of blast furnace slag was sold in the United States in 1992 with a value of $99.5 million.
A.L. Bush, in Encyclopedia of Materials: Science and Technology, 2001. 1.6 Expanded Blast Furnace Slag. Expanded blast furnace slag is a small part of the supply of structural lightweight aggregates. Annual production since 1985 has been about 1 million short tons (9×10 5 t); in 1997 that was about 12% of the total lightweight aggregate construction-related usage.
A new type of lightweight cement mortar was developed by using ground granulated blast furnace slag, quartz sand and expanded perlite as aggregates which were mixed with cement homogeneously. Consistence was used to characterize the workability of lightweight cement mortar. The effect of the components, including the proportions of granulated blast furnace slag and the addition of fly ash, on ...
Blast furnace (BF) slag has been widely recycled by civil engineering and construction industries. However, the amount of recycled BF slag has now reached the saturation point, and the development of new value-added products will be essential for promoting sustainable societies. 1) Recently, a hydrothermal reaction was proposed as a potential approach for solving this problem. 2) In general ...
2 Use of Recycled Aggregates in Construction Contents EXECUTIVE SUMMARY 3 1 INTRODUCTION 6 1.1 General 6 1.2 Classification of Aggregates 6 2 MANUFACTURED AGGREGATES 7 2.1 ed Blast Furnace Slag (FBS) 7 2.2 Fly Ash Aggregates 8 2.3 Manufactured Sand 8 2.4 Polystyrene Aggregate 9 2.5 Expanded Clays, Shales and Slates 10 3 RECYCLED …
In concrete, processed steel and blast furnace slag provide a sustainable alternative to primary aggregates in the production of lightweight or dense ready-mixed concrete. Blast furnace slag can also be used to make Ground Granulated Blast-furnace Slag (GGBS) which is used as a . Slag Aggregate an overview ScienceDirect Topics. 1.5.1.6 Slag.
5/1/2020· The use of slag in concrete has several benefits, including reduced energy, reduced greenhouse gas emissions, and reduced use of raw materials. Various types of slag are produced: - Blast-furnace slag—The nonmetallic product, consisting essentially of silicates and aluminosilicates of calcium and of other bases, that is developed in a molten condition simultaneously with iron in a blast furnace.
Blast furnace (BF) slag has been widely recycled by civil engineering and construction industries. However, the amount of recycled BF slag has now reached the saturation point, and the development of new value-added products will be essential for promoting sustainable societies.1) Recently, a hydrothermal reaction was proposed as a
8 Use of Recycled Aggregates in Construction TABLE 2 Typical physical properties of lightweight coarse aggregates (after Popovics4) Aggregate Bulk specific gravity, SSD Unit weight (kg/m3) Water absorption (% by weight) ed blast-furnace slag Australian experimental products (Jones and Murrie41) 1.15–2.20 – 400–1200 885–1375 8–15 0 ...
Pelletized slag looks similar to the clay products sold by light expanded clay aggregate suppliers, but it is a glassy material made from blast furnace slag, molded into small beads or pellets, and it is not as strong or lightweight as the products sold by lightweight expanded clay aggregate suppliers. Furnace …
of steel slag, a renewable recycled material, to treat waste water. Field applications have proven the lab science and now steel slag is being used in treatment zones or permeable reactive barriers to (Steel Slag End Uses continued) Steel Slag Coarse Aggregate AASHTO #8 Granulated Blast Furnace Slag Air Cooled Blast Furnace Coarse Aggregate ...
Concretes of densities of 1200, 900 and 600 kg/m3 were obtained by aeration by adding aluminium powder, in some formulations lightweight aggregate of blast furnace slag was added at a ratio binder ...
Blast Furnace Slag - Material Description ORIGIN In the production of iron, iron ore, iron scrap, and fluxes (limestone and/or dolomite) are charged into a blast furnace along with coke for fuel. The coke is combusted to produce carbon monoxide, which reduces the iron ore to a molten iron product.
Aggregates for Concrete. ... Chapter 7—Recycled aggregates, p. E1-23 ... material such as sand, gravel, crushed stone, blast-furnace slag, and lightweight aggregates that usually occupies approxi-mately 60 to 75% of the volume of concrete. Aggregate properties significantly affect the …
Oil palm shell lightweight concrete containing high volume ground granulated blast furnace slag Payam Shafigh *, Mohd Zamin Jumaat, Hilmi Bin Mahmud, U. Johnson Alengaram Department of Civil Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
In concrete, processed steel and blast furnace slag provide a sustainable alternative to primary aggregates in the production of lightweight or dense ready-mixed concrete. Blast furnace slag can also be used to make Ground Granulated Blast-furnace Slag (GGBS) which …
The rapid cooling of molten slag by large quantities of water produces sand-like granule aggregate. Primarily ground into a cement replacement known as ground granulated blast furnace slag (GGBS) this is used in ready-mixed and precast concrete and masonry, floor levelling compounds and high temperature resistant building products.
Lighten up on the environment. Reduce the weight of your structural concrete. Tru Lite Lightweight Aggregate™ supports Green Building because it contains blast furnace slag — recycling slag this way means reducing use of non-renewable resources. The resulting aggregate offers unique benefits with diverse applications throughout the construction materials industry.
Slag is the glass-like by-product left over after a desired metal has been separated (i.e., smelted) from its raw ore.Slag is usually a mixture of metal oxides and silicon dioxide.However, slags can contain metal sulfides and elemental metals. While slags are generally used to remove waste in metal smelting, they can also serve other purposes, such as assisting in the temperature control of ...
11/18/2016· Blast furnace (BF) slag has been recycled in the construction industry mainly as cement and concrete. However, in the past few years, recycling conditions have changed and other recycled …