Properties of aggregates for concrete are,
Aggregate is the crushed stone (limestone, basalt, etc.) which is added to the cement slurry to reinforce the mixture and give it strength when solidified.
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Aggregate is the gravel or stone in the concrete. It is what gives concrete it's strength. Think of the aggregate as the bricks of a wall and the concrete and sand as the mortar.
Concrete is a composite construction material, composed of cement (commonly Portland cement) and other cementitious materials such as fly ash and slag cement, aggregate (generally a coarse aggregate made of gravel or crushed rocks such as limestone, or granite, plus a fine aggregate such as sand), water and chemical admixtures.
Concrete is a well proportioned mixture of cement and other cementitious materials such as fly ash and slag cement, coarse aggregate made of crushed stone, fine aggregate such as sand, water, and chemical admixtures. The more inclusive answer is that concrete is a matrix of stone/sand aggregate adhered into a mass with a binding agent like Portland Cement or hot asphalt oil. This can refer to a person: He was as solid as concrete and would not move off his position.
There is nothing special about the aggregate, it is simply crushed rock that has been washed.
Usually the sand and aggregate (filler stone) is the largest percentage of concrete, however from a chemistry standpoint the cement is, by far, the most important ingredient.
Aggregate is the gravel or stone in the concrete. It is what gives concrete it's strength. Think of the aggregate as the bricks of a wall and the concrete and sand as the mortar.
Why it is not suitable for all concrete mixture when the amount of fine aggregate and coarse aggregate is fixed?
No. Concrete is made up mostly of aggregate.
Concrete is what you make a sidewalk from. To make concrete, you mix Portland cement, sand, gravel (aggregate) and water. The cement holds the aggregate together.
Polymer concrete is a composite material which results from polymerization of a monomer/aggregate mixture. The resulting polymer binds the aggregate making the concrete stronger than ordinary concrete using just standard aggregate.
C. A. Rogers has written: 'Alkali aggregate reactions, concrete aggregate testing and problem aggregates in Ontario' -- subject(s): Concrete, Alkali-aggregate reactions, Testing
Larger the size of aggregate will decrease strength of the concrete because surface area of this aggregate is low.Lesser the size of the aggregate will lead to increase the strength of the concrete.Well graded aggregate have all size of particles hence particle interferance is neglected,thus strength of concrete is more.
The aggregate which are produced from vertical shaft impactor ( the machine which is installed in crusher plant to control the elongated and flaky aggregate ) for concrete.
Concrete generally has larger aggregate than mortar.
Cement mortar is a mixture of cement, fine aggregate and water.Concrete is a mixture of cement, fine aggregate, coarse aggregate and water.Generally, concrete have higher strength than cement mortar.
Concrete block is made from Portland Cement, water, sand and aggregate. The aggregate may be in the form of flyash or cinder from burnt coal.
It would weaken the concrete, so keep out the salt.