News Date:2015-09-14
Granulated blast furnace slag is highly cement replacement and after drying and grinding to a fine powder, it can be used as a replacement for conventional cement. The first commercially available blast furnace cement (a blend of Portland cement and GGBS) was produced in Germany in 1865 and currently over 200 million tones/annum of blast furnace slag cement are used worldwide.
In the UK, GGBS is normally supplied as a separate material, conforming to EN 15167-1 ‘Ground granulated blast furnace slag for use in concrete, mortar and grout’. GGBS is blended with cement at the concrete mixer and its major use is in ready-mixed concrete. Typically the replacement level is about 50%, but in some applications, GGBS can replace over 80% of the Portland cement. Concrete is well aware of the many benefits of GGBS (e.g. it increases the durability of concrete and greatly reduces its carbon footprint) and about a third of all UK ‘ready-mix’ deliveries contain GGBS.
Slag and cement are complementary. Slag cement is also an excellent alternative for the same amount of material. In the past construction projects, slag is put in quantity in cement. It can effectively improve cement properties, fill the gap between the cement particles, and thus improve the solidification quality.
Therefore, the traditional pure cement construction way, cannot meet the future demand. The development of slag and cement mixing method will be the priority among building materials industry in future.
From the reflection of the market, since 2014, market of powder production line get more attention and demand. It can be expected that construction of slag powder production line will become a hot spot in the building materials industry.
Great Wall Machinery has rich experience in production and construction. When construct slag powder production line in 2014, please choose Great Wall Machinery.
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