DUCTILITY Ability of a material to deform easily under stress of temperature‚ pressure and Speed; especially‚ ability of a metal to stretch easily. Ductility is characterized by a weak elastic limit and significant lengthening.
WORKABILITY The ability of a mortar or a fresh concrete to fill correctly a mold or a formwork thanks to a well-studied batching of its constituents that give him a sufficient fluidity without harming its strength and its homogeneity. The workability is a factor of the first magnitude because it conditions among other things: good filling, simplicity of placing, good covering of reinforcements.
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BLEED To go up on the surface, speaking of the water contained in a mortar, a concrete. To reject internal water.
BLEEDING The appearance of a film of water or laitance on the surface of a slab or a concrete or mortar screed after troweling or vibration. The vibration, closing between them the various grains of the components of concrete, brings about the expulsion of a part of water that occupies the empties. Water, having lower density than the other components, goes up on the surface. Syn. with BLEED-THROUGH; SWEATING; WATER GAIN
SEGREGATION 1. An imbalance in the chemical composition of the different components of an alloy. 2. A preferential aggregation of the chemically alike components between them during the solidification phase of an alloy; this separation results in a chemically heterogeneous structure. 3. A selective dissociation, in distinct heaps, of different previously mixed bodies as a result of vibration, brewing, etc. 4. A phenomenon of dissociation of the concrete ingredients that can be due to various causes (excessive vibration, carriage, falls from critical height, etc.).
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HYDRATE A chemical body resulting from the combination of a body with water molecules.
HYDRATION Phenomenon of water absorption by a chemically receptive body. The process of chemical reaction between water and cement is also called hydration.
DURABILITY Resistance to weather condition
SHRINKAGE Decrease in volume of Concrete
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COMPACTION Compaction is removing the air from concrete. Proper compaction results in concrete with an increased density which is stronger and more durable.
BITUMEN: Bitumen is a generic name applied to the various mixtures of hydrocarbons. They may be gases, liquid ,semisolid and solid in nature and completely soluble in carbondisulphide.
Paints Paints are used to protect metals, timber, or plastered surfaces from the corrosive effects of weather, heat, moisture or gases etc and to improve their appearance
WORKABILITY The ability of a mortar or a fresh concrete to fill correctly a mold or a formwork thanks to a well-studied batching of its constituents that give him a sufficient fluidity without harming its strength and its homogeneity. The workability is a factor of the first magnitude because it conditions among other things: good filling, simplicity of placing, good covering of reinforcements.
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BLEED To go up on the surface, speaking of the water contained in a mortar, a concrete. To reject internal water.
BLEEDING The appearance of a film of water or laitance on the surface of a slab or a concrete or mortar screed after troweling or vibration. The vibration, closing between them the various grains of the components of concrete, brings about the expulsion of a part of water that occupies the empties. Water, having lower density than the other components, goes up on the surface. Syn. with BLEED-THROUGH; SWEATING; WATER GAIN
SEGREGATION 1. An imbalance in the chemical composition of the different components of an alloy. 2. A preferential aggregation of the chemically alike components between them during the solidification phase of an alloy; this separation results in a chemically heterogeneous structure. 3. A selective dissociation, in distinct heaps, of different previously mixed bodies as a result of vibration, brewing, etc. 4. A phenomenon of dissociation of the concrete ingredients that can be due to various causes (excessive vibration, carriage, falls from critical height, etc.).
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HYDRATE A chemical body resulting from the combination of a body with water molecules.
HYDRATION Phenomenon of water absorption by a chemically receptive body. The process of chemical reaction between water and cement is also called hydration.
DURABILITY Resistance to weather condition
SHRINKAGE Decrease in volume of Concrete
BUY BASIC CIVIL ENGINEERING DVD in EBAY ----> CLICK HERE
OR MESSAGE IN FACEBOOK ---> MESSAGE HERE
COMPACTION Compaction is removing the air from concrete. Proper compaction results in concrete with an increased density which is stronger and more durable.
Paints Paints are used to protect metals, timber, or plastered surfaces from the corrosive effects of weather, heat, moisture or gases etc and to improve their appearance
