test 2 - pojęcia

sand used in concrete

fine aggregate

mixing concrete accurately

batching

concrete which is preconditioned to improve its tensile strenght; before concrete is poured, tension is applied to the reinforcing bars

prestressed concrete

effective structural capability of concrete

28-day strenght

different types of chemical put on concrete

additives

makes drier concrete easier to work with

plasticizer

concrete elements which are cast at factory and transported to a site for installation

precast

concrete can be poured; it can be also...

cast or placed

a steel bar that is placed in concrete to increase its tensile strenght. It is normally manufactured from carbon steel

reinforcing bar/rebar

a very large rock or piece of stone

boulder

a place where stone is dug out of the ground

quarry

small pieces of stone used for making paths and roads

gravel

limestone which is mined at a quarry, crushed and temporarily stored in blending beds (in the production of cement)

raw meal

a type of oven used for baking clay, bricks, etc. to make them hard

kiln

cement clinker is a solid material produced in the manufacture of Portland cement as an intermediary product

clinker

w type of white of grey stone containing calcium, used for building, and making cement

limestone

a white chemical element that is an important part of bones and teeth and is found in some types of rock

calcium

a hard heavy metal that is a common element. It is used for making steel and is also used in many types of machine and building structures

iron

a soft white substance used for making plaster

gypsum

a light silver-coloured metal that is used for making things such as pans for cooking

aluminium

describes metal or rock that is in liquid state because of great heat

molten

a type of very hard rock that has a pattern of lines going through it, feels cold, and can be polished to become smooth and shiny

marble

a container that is heated to a very high temperature, so that substances that are put inside it, such as metal, will melt or burn

furnace

having the shape of a hollow tube

cylindrical

to join together again

recombine

a part that combines with other parts to form something bigger

component

to break something into very small pieces or powder, by using a machine or by crushing it between two hard surfaces

grind, ground

to make something stick together in solid mass

bind, bound

to join with another substance to form a mixture

blend

send or small stones used for making concrete

aggregate

a chemical reaction in which the major compounds in cement form chemical bonds with water molecules and become hydrates or hydration products

hydration

powder that enables concrete to set

cement

concrete which contains steel bars to improve its tensile strenght

reinforced concrete

moulds of the required size and shape, made from steel or timber, which are used to contain the concrete until it has set

formwork/shuttering

gravel used in concrete

coarse aggregate

allows concrete to stay wet for longer

retarder

concrete that is poured on-site in its final position

in-situ concrete

affects the wetness and strenght of concrete

water-cement ratio

specification of concrete ingredients

mix design

concrete in which the tension is applied to the reinforcing bars after the concrete has set

post-tensioned concrete

provide a cure for, make healthy

heal

empty inside

hollow

to inject; to fill something or someone with

infuse

pass gradually or leak through small openings

seep

CaCO3

calcium carbonate

inactive, sleeping

dormant

the pressure that is put on something when a physical force stretches, pushes, or pulls something

strain

to make something happen; the reason why something happens

cause

to go into or through something

penetrate

an increase in the density of something

densification

the simplest and smallest forms of life; they exist in large numbers in air, water and soil, and also in living and dead creatures and plants, and are often a cause disease

bacterium

overcrowding

congestion

the fact of something happening or existingth

occurrence

the act of making something stronger

reinforcement

a small hard hall of any substance, often of soft material that has become hard

pellet

chemical substance that an organism needs to sustain life

nutrient

a line on the surface of sth along which it has split without breaking into separate parts

crack