Admixtures that decrease the setting time by increasing the rate
A material other than water, aggregates, or cement that is used
as an ingredient of concrete or mortar to control setting and early
hardening, workability, or to provide additional cementing properties.
Inert solid bodies such as crushed rock, sand, gravel.
Hardened cement paste.
To have water seep to the surface of the cement paste due to settling.
Decomposition due to the loss of bound water and carbon dioxide.
Finely powdered mixtures of inorganic compounds which when combined
with water hardens with hydration.
paste: Cement plus water. When the mass has reacted with water and
developed strength it is called hardened cement paste.
Type of soil consisting of very fine particles.
The material that emerges from the cement kiln after burning. It is
in the form of dark, porous nodules which are ground with a small amount
of gypsum to give cement.
Forces acting inwardly on a body.
A hard compact building material formed when a mixture of cement, sand,
gravel, and water undergoes hydration.
To keep concrete moist during initial hardening.
The process of changing the dimensions of a structure by applying a
period: Time period that concrete retains it workability.
The ability of a material to return to its original shape after
Holders in which concrete is placed to harden.
Calcium sulfate dihydrate, CaSO4.2H2O
added to cement to regulate setting.
The reaction of cement with water to form a chemical compound.
High temperature oven.
Mineral rock of calcium carbonate.
Cement paste mixed with sand.
cement: Volcanic rock powdered and used in making hydraulic cement.
The amount of empty space in concrete.
cement: A cement consisting predominantly of calcium silicates which
reacts with water to form a hard mass.
Admixtures that increase the setting time by slowing down hydration.
Transformation of cement paste or concrete from a fluid-like consistency
to a stiff mass.
test: Test used to determine workability.
The stress resulting from elongation.
How easily fresh concrete can be placed and consolidated in forms.