G

Grading
Aggregate particle distribution among various sizes , usually expressed in terms of percentage.

Gravel
Coarse aggregate that stops in sieve M 4.75

Green concrete /Freshly placed concrete
Concrete recently mixed with water, with a plastic and fluent mass form, that can be molded.

Gypsum
Very soft, white natural stone, rich in calcium sulfates, that is added in low proportion during cement manufacture. It acts as setting retarder.