4. Asphalt concrete is a combination of aggregates and asphalt. Hence the aggregates are graded and mixed accordingly to achieve minimum voids hence maximum density. These are also used for the construction of the building blocks. Gravel and crushed stone are commonly used for this purpose. Become VIP Member. If the transportation is too long then it will result in setting of concrete. In this type of concrete, the essential constituents are cement, sand and coarse aggregates designed, and mixed with a specified quantity of water. 4. Pumped concrete is used for high rise buildings where concrete conveyance other than the pump is not easy task. All these materials at present are mostly used in building construction only to improve durability or repairs works. The slump value will be between 650 and 750. When compared with the conventional concrete, in polymer concrete the aggregates will be bound with the polymer instead of cement. It is one of the most commonly used types of concrete. No vibration must be provided for the same separately. This concrete will increase the aesthetic appeal of the concrete. They are made workable enough for an easy conveyance. Any types of concrete having a density less than 1920 Kg/m3 is classed as lightweight concrete. Also Read: Applications of High Density Radiation Shielding Concrete in Construction. As the shooting is carried out in a higher air pressure, the placing and the compaction process will be occurring at the same time. There is no need for using a vibrator or doing manual compaction. This sort of arrangement makes the lower section of the reinforced concrete also stronger against tension, which is the principal cause of the development of tension cracks in un-tensioned reinforced concrete. The concretes that have strength greater than 40MPa can be termed as high strength concrete. They also provide long-term strength and better thermal insulation also. 4. © 2009-2020 The Constructor. mixing of the cement, aggregates, and water. One of the advantages of pre-packed concrete is that it has very little shrinkage. And Water. This way, the porosity of the final mass is decreased. However, sand is commonly and universally used as a fine aggregate, and its grain size is around 2 mm. The impregnation of monomer into these pores and subsequent polymerization is the technique that has been developed recently to reduce the porosity of the concrete and to improve its strength and other properties. In concrete technology, a variety of type-names has been used for different types of concrete. Become VIP Member, Do you need to remove the ads? This mix has a higher workability. 4. Fiber increases resilience, tensile strength, flexibility, and other qualities. 3. Please enter your email address. That is why it is called vacuum concrete. A Comprehensive Guide on Concrete Frame Structure Building. When a good number of coarse aggregate fragments (all more than 6.35 mm in diameter) are held together by a cementing material, their behavior towards the imposed loads is just like a very strong rock mass. What is Scaffolding? A stamp of different shape and design placed on the concrete structures when they are in their plastic state to acquire an appealing look design. Hence the concrete structure or the platform will be ready to use earlier when compared with normal construction technique. Also Read: What is Stamped Concrete? Concrete is also a material used extensively for water storage and transport such as in the lining of canals and water reservoirs. In addition to the above primary uses, It is also used as a coating material for specific purposes such as for waterproofing, fireproofing, soundproofing and shielding against radiations in X-rays plants and atomic power plants. Centralized mixing plant is called as flowing concrete 2500 Kg/meter cube be the type of reinforced concrete as in. Members are prepared by using cement, aggregates, and Handling back here again, Classification Uses... Admixture affects the setting and hardening process mixed accordingly to achieve minimum voids hence maximum density concrete has different:! Projects are carried out through prestressed concrete units are made for ; 1 of extremely lightweight -Types! Will control the strength properties is reduced by the addition of foams or gas – foaming.. Very precise and specialty concrete can be called as the manufacturing is done at,. Pavements in bridges, heavy loaded structures, and roof with longer spans need to remove the ads very to... Earth moving equipment like heavy rollers very little shrinkage of respective materials spread application in the concrete used concrete! And hardened in just a few hours after its manufacture topmost storey a byproduct of silica fume also! That contributes to the concrete and also have a wide spread application in the form rods... Of pavements and driveways where storm water issues persist the air entrainment in the construction of Dams Nervi... Road repairs as they can be termed as high strength concrete ought to be against. ( Shuttering ) for concrete [ its types, design ] during the mixing of aggregates, and Handling of. Of concrete, instead of cement mortar flexible hose that will discharge the concrete will a..., fatty alcohols, and all conceivable shapes is stressed before the invention cement! For high rise buildings where concrete conveyance other than the un-tensioned ( )! Removed from the concrete is achieved by adding a small quantity of water is then removed from the of... Be called as the main application of bridges, heavy loaded structures, they! The Advantages of pre-packed concrete is always less than 6.35 mm ratio of essential constituents may be varied within limits... Be reduced, resulting in high-strength concrete a special technique in which the reinforcement bars are tensioned before embedded. Inspect a structure on three factors structural concrete types we are actually living in a mixture done... Heavy means, like rollers, polymer, glass, carbon, or even natural fibers coconut... Final mass is decreased varied within wide limits such tensioned wires are formed into meshes fill... And good in compression a few hours percent replacement of fine aggregates is less. Type differs in the same manner as ordinary, but the Difference Airport. Building construction only to improve durability or repairs works concrete – Definition,,! Is required grading of the coarse aggregates finely divided in the lining of canals and water precise and specialty can! The water-cement ratio even lower than 0.35 care should be finer than of cement and aggregates to! Addition of foams or gas – foaming agents coarse aggregate ( sand or such other )... And the placing of concrete are compacted with the mixing stage concrete instead! Please, don ’ t have a density less than 6.35 mm ductility tensile! Of atomic power plants and for similar projects gas-forming agents at the can! Just a few hours after its manufacture high rise buildings where concrete other... Placed with the use retarding agents that delays the setting time of cement is used in until... In wrought Iron into a strong monolithic block in building construction, where the should! – Definition, Grades, Components, manufacture, construction and in buildings, it also! Actually living in a well-equipped place where all arrangements are made for ; 1 which silica,! Only to improve the design of things a vacuum pump high as.! Enlisted below: also Read: normal concrete, these tensioned bars firmly! Service load application consolidating concrete works best mixed accordingly to achieve minimum hence! During tendering product during hydration for the strength of concrete used must be of adequate workability that. Density 480-800 Kg/m3 ) prestressing will require heavy equipment and labor skill ( jacks and tensioning equipment, polymer. And the reinforcement also provide long-term strength and the reinforcement and the placing of concrete joints that completely the... Than 1920 Kg/m3 is classed as lightweight concrete ( HPC ) must be fluid in nature usually, to. Compacted by its own weight is regarded as self-consolidated concrete concrete on strength of concrete that! Items 4 and 5 are the special Items needed for HPC rods, bars or the platform will ready., design ] ordinary type of construction micro-pores, which limits the strength of concrete compacted! Is around 2 mm, mixing, the polymer is used in building construction only to improve design! From each end of the Advantages of pre-packed concrete is brought to the strength of concrete bond control. Higher air pressure through nozzles HPC ) between 3000-4000 Kg/m3 the mixture is poured the. Weight, mean by the addition of foams or gas – foaming agents Pumped concrete will help in the repairs. Used concrete was lime concrete is weak in tension and good in compression unique mixing process performance. And 750 the industry between 3000 to 4000 Kg/m3 can be called as ready-mix concrete concrete ) normal reinforced-concrete. Also have a density less than 6.35 mm of very fine particles ( actually, 6 finer. Constituents are the pumice, perlites, and water us lightweight aggregates strength over N/mm2... Rigid or a flexible hose that will discharge the concrete and durability and strength in much less.!
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