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Process in which raw material for cement is exposed to temperatures up to 1,400 centigrades; clinker is obtained in this process.
A slight arching or upward curve of an arch centering to avoid deep deformations when striking centers.
Hydraulic cement produced with Portland clinker, which is used for oil wells. It usually has slow forging and it must be manageable at high temperatures and pressures. It is produced in classes "A" to "H" and "J". Each class is applicable for each range of depth, chemical aggression or pressure.
Constituent of concrete formed by cement and water.
Any product with the capacity to join pieces, for example Portland cement, asphalt and, resins.
Used as basis before placing floors.
Natural ground relatively smooth. Because its great quantity of silicates is the second most important raw material for cement manufacture.
Clinker is the intermediate product used in the manufacture of cement. Limestone, clay and iron oxide are calcined in a kiln at 1,450 centigrades to produce clinker.
Gravel or other stony material in which most of the particles remain within a maximum size of 1.9 cm. To 2.5 cm.
Discontinuity formed when concrete volume or surfaces have hardened before the next layer or element has been placed.
Mixture of cement as a binding agent, fine aggregates (sand), coarse aggregates (gravel) and water.
Plasticity level for freshly-mixed concrete or mortar to fluid. The usual way to measure it is through slump test for concrete, flow for grout or mortar and penetration resistance for cement paste.
Process to compact freshly-placed concrete or to mold it in arch centerings, avoiding honeycombs and cavities of entrained air.
A layer of concrete used as surface for vehicular transit.
Concrete with no slump, almost dry, compacted by roller compaction. It is characterized for being a quick and economic method to build airports highways, pavements, etc.
Form to support some construction elements.
Predetermined separation installed or created between adjacent concrete surfaces, to release stress or compression resulting form the movement of the structure or construction.
Most effective method to control drying shrinkage cracks.
Sample extracted from concrete elements through special methods, in order to study and prove properties of already hardened concrete.
Cylindrical sample of hardened concrete or stone, extracted by a hollow drill.
Natural minerals added in small quantities during cement manufacture in order to achieve specific goals that could not be achieved with normal raw materials.
Opening in concrete of an important size that could be the beginning of a structural failure.
Treatment given to recently casted concrete, in order to assure permanent availability of water that must allow the progress of chemical reactions between cement and water. This important process allows us to get durability in concrete.
Membrane or coatings used to temporarily retard the evaporation of water from the exposed surface of fresh concrete, thus decreasing the tendency for cracking.
Cotton or plastic thread used to trace or as reference to mark only one line.
Adhesion between dissimilar materials as result of chemical reaction.
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