GGBS

GGBS is a fine powder, used in concrete as "cement", major use in ready mixed concrete (RMC) or in the production of Portland slag cement. GGBS replaces a substantial proportion of normal cement (Ordinary Portland Cement) in RMC. The mixing varies from 30% to 70% approximately (generally 50%). The higher the proportion, the better is durability for concrete. GGBS is also in other forms of concrete including site-batched and pre-cast.

Replacement of Portland Cement by adding up to 70% GGBS, reduce cement content in concrete from about 530 Kg/m3 to 160 Kg/m3 and despite of this large reduction of cement in concrete, ultimate strength is not affected, also considerable improvement in durability properties is observed.

GGBS slag is byproduct of iron and steel manufacturing process. It contains the entire basic constituent of OPC but not exactly in the same ratio and chemical form. Slag itself has no cementing property but when mixed with OPC or activated chemically it develops hydraulic properties similar to cement. The calcium oxide (CaO) found in slag is tied up as calcium silicate, calcium aluminates and calcium aluminosilicate. Although these compounds are not identical to those found in Portland cement (i.e. tricalcium silicate, tricalcium aluminate, etc), they hydrate when activated by calcium hydroxide generated during the hydration of Portland cement. Since GGBS is almost 100% glassy, it is generally more reactive. This process of quenching is called granulation because it produces glassy granules similar in appearance to coarse sand, having excellent cementitious property when ground to high fineness and mixed with cement

Advantages to GGBS are

Reduction in heat of hydration and minimization of Thermal cracks.
Permeability and excess lime released during portland cement hydration are the main causes of concrete's negative effects.
Absorption of surplus lime released out of OPC to form in to secondary hydrated mineralogy.
Due to the secondary hydrated mineralogy, pores and grains are refined, thereby contributing to the impermeability and enrichment of transition zones.
Impermeability is the foremost mechanism for making the concrete more durable and is best achieved by using GGBS.
Reduced requirement of cement for same strength thus reduces the cost of concrete.

Concrete made with a blend of GGBS

GGBS APPLICATIONS IN CONSTRUCTION

GGBS Packing

GGBS in bulk tankers

Small bags of GGBS are available for builders and developers who tend to store and use GGBS in relatively smaller amounts. It is simple to manually handle and mix on location thanks to the small bags dimensions and workable weight.

Major advantages of using GGBS in small bags are:

Contractors, builders, developers, as well as other consumers like producers of GGBS -based products, are customers of GGBS in small bags. In locations where GGBS is manually handled, it is especially useful.

GGBS in jumbo bags

For large consumers who need to store GGBS frequently, jumbo bags of GGBS are advantageous. In comparison to bulk tankers, it is cheaper to transport and can be exported in containers.

Major advantages of using GGBS in jumbo bags are:

Manufacturers of ready-mix concrete, contractors, builders, and other significant consumers of GGBS are among the customers for GGBS in jumbo bags. It is especially helpful in areas where GGBS originates from a great distance.

GGBS in bulk tankers

GGBS is transported in bulk tankers to the end-location. user's Bulk GGBS reduces the need for building and maintaining big cumbersome go-downs for GGBS on construction sites.

Major advantages of using bulk GGBS are:

Clients for large Manufacturers of pre-cast fabricated concrete blocks, builders, contractors, and manufacturers of ready-mix concrete are just a few examples of GGBS. The discharge system's measured extraction quantity ensures accurate weight.