Concrete




 * Find the meaning of the highlighted expressions in the text, and post them to the Glossary in Moodle. Also, add any other term which is unknown to you.**

__**Deck**__: Any of various platforms built into a vessel

__**Fusing:**__ To unite or become united by melting, esp by the action of heat.

__**Mesh**__: An openwork fabric or structure, a net or network: a screem made of wire mesh

__**Pipes:**__ A long tube of metal, plastic, etc, used to convery water, oil, gas, and so forth.

__**Poured:**__ To flow or cause to flow in a stream

__**Sewerange:**__ Removal of waste materials by means of a sewer system.

__**Slabs**__: A broad flat thick piece of wood, stone, or other material.

__**Volcanic ash:**__ Consist of small tephra, which ar bits of pulverized rock and glass created by volcanic eruptions

Is a manufactured mixture of cement and water, with aggregates of sand and stones, which hardens rapidly bye chemical combination to a stonelike, water-and-fire-resisting solid of great compressive but low tensile strength,
 * Concrete**

Was developed to add the tensile strength of steel to the compressive strength of mass concrete. It was invented in 1849 by Joseph Monies, who received a patent in 1867. The metal is embedded by being set as a mesh into the forms before pouring, and in the hardened material the two act uniformly.
 * Reinforced concrete**

Permits te erection of vast vaults and domes with concrete and steel content so reduce that the thickness is comparatively less than that of an eggshell.
 * Concrete-shell construction**

Employd bricks, slabs, and supports made under optimal factory conditions to increase waterproofing and solidity, to decrease time and cost in erection, and to reduce expansion and contractions.
 * Precast-concrete construction**

Provides bearing members into which reinforcement is set under tension to produce a live forece to resist a particular load.
 * Prestressed concrete**


 * What is the difference between tilt wall construction, tilt-up panel construction and pre-cast concrete construction?**

Tilt-up and tilt wall are two terms used to describe a precast concrete building construction. For a tilt-up concrete building, the walls are created by assembling forms and pouring large slabs of concrete called panels directly at the job site. For precast concrete buildings, work crews do not set up forms at the job site to create the panels. Instead, workers pre cast concrete panels at a large manufacturing facility. Because the precast concrete form are poured indoors, this activity can take place regardless the weather conditions. After curing, the precast concrete panels are trucked to the job site. From this point, precast concrete buildings are assembled in much the same manner as tiltwall buildings. The fact that precast concrete walls are formed at a manufacturing facility resolves the weather issue, but presents a different limitation not found in tilt-up construction. Because the panels must be transported places a substantial limitation on how wide or tall each panel can be. For a percast construction project, the panels must be smaller and more managable to allow trucks to haul them over the road to their final destination. This places greater design restrictions on architects and limits the applications where precast construction can be used. Precast concrete is a perfect choice in bad enviromental circumstances but it has to be transported sometimes over long distances, in contrast to the tilt-up process, which is the opposite. Therefore, both have their advantages and disadvantages.