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empezar lección
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mixing concrete accurately empezar lección
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concrete which is preconditioned to improve its tensile strenght; before concrete is poured, tension is applied to the reinforcing bars empezar lección
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effective structural capability of concrete empezar lección
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different types of chemical put on concrete empezar lección
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makes drier concrete easier to work with empezar lección
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concrete elements which are cast at factory and transported to a site for installation empezar lección
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concrete can be poured; it can be also... empezar lección
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a steel bar that is placed in concrete to increase its tensile strenght. It is normally manufactured from carbon steel empezar lección
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a very large rock or piece of stone empezar lección
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a place where stone is dug out of the ground empezar lección
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small pieces of stone used for making paths and roads empezar lección
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limestone which is mined at a quarry, crushed and temporarily stored in blending beds (in the production of cement) empezar lección
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a type of oven used for baking clay, bricks, etc. to make them hard empezar lección
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cement clinker is a solid material produced in the manufacture of Portland cement as an intermediary product empezar lección
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w type of white of grey stone containing calcium, used for building, and making cement empezar lección
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a white chemical element that is an important part of bones and teeth and is found in some types of rock empezar lección
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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 empezar lección
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a soft white substance used for making plaster empezar lección
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a light silver-coloured metal that is used for making things such as pans for cooking empezar lección
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describes metal or rock that is in liquid state because of great heat empezar lección
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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 empezar lección
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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 empezar lección
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having the shape of a hollow tube empezar lección
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empezar lección
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a part that combines with other parts to form something bigger empezar lección
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to break something into very small pieces or powder, by using a machine or by crushing it between two hard surfaces empezar lección
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to make something stick together in solid mass empezar lección
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to join with another substance to form a mixture empezar lección
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send or small stones used for making concrete empezar lección
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a chemical reaction in which the major compounds in cement form chemical bonds with water molecules and become hydrates or hydration products empezar lección
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powder that enables concrete to set empezar lección
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concrete which contains steel bars to improve its tensile strenght empezar lección
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moulds of the required size and shape, made from steel or timber, which are used to contain the concrete until it has set empezar lección
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empezar lección
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allows concrete to stay wet for longer empezar lección
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concrete that is poured on-site in its final position empezar lección
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affects the wetness and strenght of concrete empezar lección
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specification of concrete ingredients empezar lección
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concrete in which the tension is applied to the reinforcing bars after the concrete has set empezar lección
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provide a cure for, make healthy empezar lección
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empezar lección
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to inject; to fill something or someone with empezar lección
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pass gradually or leak through small openings empezar lección
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empezar lección
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empezar lección
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the pressure that is put on something when a physical force stretches, pushes, or pulls something empezar lección
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to make something happen; the reason why something happens empezar lección
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to go into or through something empezar lección
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an increase in the density of something empezar lección
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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 empezar lección
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empezar lección
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the fact of something happening or existingth empezar lección
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the act of making something stronger empezar lección
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a small hard hall of any substance, often of soft material that has become hard empezar lección
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chemical substance that an organism needs to sustain life empezar lección
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a line on the surface of sth along which it has split without breaking into separate parts empezar lección
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