What aggregate has to do with concrete?
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.
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.
Roman concrete consisted of the same basic elements as present day concrete which is an aggregate and a binder. For the aggregate the Romans used pulverized rubble, broken tiles and rock. A volcanic debris called "pit sand" was also used. For the binder, gypsum and lime was used. Roman concrete consisted of the same basic elements as present day concrete which is an aggregate and a binder. For the aggregate the Romans used pulverized rubble…
No-fines concrete as the term implies, is a kind of concrete from which the fine aggregate fraction has been omitted. This concrete is made up of only coarse aggregate, cement and water. Very often only single sized coarse aggregate, of size passing through 20 mm retained on 10 mm is used. No-fines concrete is becoming popular because of some of the advantages it possesses over the conventional concrete.
Aggregate to cement ratio is an important thing which affects the workability....! If the aggregate/cement ratio is higher , the concrete will be Leaner. Less quantity of paste is available for lubrication, Hence workability decreases..!! On the other hand if the aggregate/cement ratio is lower, the concrete will be fatty. Higher quantity of paste is available for lubrication. Hence workability increases. ! Thus Higher aggregate content leads to lowering of workability....!
Concrete is composed 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. In reinforced concrete, steel is introduced in to the concrete. In plain concrete, no steel reinforcement is introduced. Generally tensile and compressive strength is taken by reinforced concrete and only compressive strength is taken by plain concrete
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…
Yes, concrete is an example of a covalent bond. Concrete is a composite construction material composed primarily of aggregate, cement, and water. When concrete is made, in its process of setting, the cement undergoes hydration as it reacts with water to bind the matrix of sand and stone aggregate resulting in a silicate product, known as tobermorite. The tobermorite, thus formed in strong crystals adheres the sand and aggregate by means of silicon-oxygen covalent bonds.