Roller compacted concrete (RCC) or Rollcrete or Rolled concrete - Roller compacted concrete is a low slump concrete designed to be transported to the working surface by high capacity equipment, spread by bulldozer and compacted by a vibratory roller.
It is used in construction process which combines the economical and rapid placing techniques of embankment material and the excellent mechanical properties of concrete, such as strength and durability.
The materials used for roller compacted concrete are essentially the same as those used for the production of conventional mass concrete but the proportions of the mix are adjusted to be suitable for placing and compaction.

Cyclopean concrete - Mass concrete in which large stones are placed and embedded in the concrete as it is deposited.

Fibre (Fiber) reinforced concrete - Conventional concrete utilizing in its mixture a reinforcement made of discrete fibers dispersed and randomly oriented. in order to improve some properties of the concrete, such as: crack strength, impact, erosion and cavitation resistance, etc. Steel, glass and synthetic fibers are principally used.

Plastic concrete - Weak concrete capable of undergoing deformation without cracking. Usually achieved by adding bentonite to the mix.

Shotcrete or Sprayed concrete - Concrete pneumatically projected at high velocity onto a surface.

Fly ash - Finely divided residue that results from the combustion of powdered coal in the thermal power stations. The ash is carried through the boiler tubes by the flue gases and is separated out by mechanical or electrostatic precipitators. It can be used as a pozzolan or for partial replacement of cement in concrete and grout or as a light-weight fill material. Also referred to as pulverized fuel ash (PFA).

Plasticizer - An admixture that either increases slump of freshly mixed concrete without increasing water content, or maintains slump with reduced amount of water.

Superplasticizer or High range water reducing admixture - A water-reducing admixture capable of producing large water reduction or great flowability without causing undue set retardation or entrainment of air in concrete.

Accelerator or Accelerating admixture - An admixture that causes an increase in the rate of hydration of the hydraulic cement, and thus shortens the time of setting, or increases the rate of strength development. or both.

Retarder or Retarding admixture - An admixture that causes a decrease in the rate of hydration of the hydraulic cement and lengthens the time of setting.

Binding layer - A layer or mortar, usually some millimeters thick, which is spread on a moist and prepared hardened concrete surface prior to placing fresh concrete. Its aim is to improve bond (tensile and shear strength) to the subsequent concrete layers.

Bedding layer - A layer of conventional concrete placed on a foundation to provide good bond between the dam and the bedrock.

Curing compound - A liquid that can be applied as a coating to the surface of newly placed concrete to retard the loss of water or. in the case of pigmented curing compounds, also to reflect heat, so as to provide an opportunity for the concrete to develop its properties in a favourable temperature and moisture environment.

Slump test - The procedure measuring the consistency of freshly mixed concrete by measuring the loss of height (slump) of a standardized cone of fresh concrete after the fonu is removed.