GranCem - Is specialized cement made from the slag by-product of iron blast furnaces called ground granulated blast-furnace slag (GGBFS). The unique chemistry of the slag, combined with water quenching, makes it more a dependable and effective concrete.

Grade - Usually the surface elevation of the ground at points where it meets a structure. Also, surface slope. Important in Concrete placement

Granular Material - A sandy type of soil with particles that are coarser than cohesive material and do not stick to each other. Can help or hinder concrete mix designs

Gravel - A cohesion less aggregate of rock fragments with varying dimensions of 3.0 to .08 inches. Critical in the design mix of concrete

Green Concrete - Concrete that has set but not appreciably hardened.

Grout - A mixture of cementitious material and water, with or without aggregate, proportioned to produce a pour able consistency without segregation of the constituents; also, a mixture of other composition but of similar consistency. See also Neat Cement Grout and Sand Grout, but not concrete

Gumbo - Material in the plastic state identified by a soapy or waxy appearance before setting into concrete.

Gunnite - Gunnite is “mortar conveyed through a hose and pneumatically projected at High velocity on to a surface” Why is it different from conventional concrete? Unlike conventional concrete, which is first placed and then compacted (vibrated) in a second operation, gunnite undergoes placement and compaction at the same time due to the force with which it is projected from the nozzle. Because of this it is more dense, homogeneous, strong and waterproof than any other process. Gunnite is not placed in forms, it can be impacted onto any type of shape Of surface, including vertical or overhead.

Gypsum: Calcium sulfate dihydrate, CaSO4.2H2O added to cement before it’s concrete to regulate setting.