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In a nutshell, the strength and durability of the structure depend on the properties of cement. The properties of cement can be classified as physical and chemical properties. Physical Properties Of Cement. 1. Fineness of Cement The fineness represents the particle size of cement. If the cement contains coarser particles, it reduces the workability, rate of hydration, which directly affects the
Various tests on cement Basically, two types of tests are undertaken for assessing the quality of cement. These are either field test or lab tests. The current section describes these tests in details lets know more about '' Various Tests on Cement ''.Field test of cement There are four field tests may be carried out to ascertain roughly the quality of cement.
Strength : Compressive Strength. The cement paste (consisting of 1 part cement+3 parts standard sand+ water, by weight) is placed in 7cm moulds. And the specimens are water cured for various ages for testing. The mortar specimens taken out of the mould are
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#0183;#32;Physical and Chemical Properties of Ordinary Portland Cement (OPC) of different grades: Type of Cement 33 Grade (IS: ) 43 Grade (IS:) 53 Grade (IS: ) Physical Properties Minimum Compressive Strength, N/mm2 3 day 16 23 27 7 day 22 33 37 28 day 33 43 53 Fineness Minimum specific surface (Blaines air permeability) m2/kg []
Cement paste of standard consistence is used for this test. Vicat apparatus is used, but the plunger is replaced by the steel needle in the form of a right cylinder of effective length 50 #177;
Smoothness Test: When cement is touched or rubbed in between fingers, it should give a smooth feeling. If it felt rough, it indicates adulteration with sand. Water Sinking Test: If a small quantity of cement is thrown into the water, it should float some time before finally sinking.
Percentage in cement; Properties of Cement. Physical Properties of Cement. 1. Fineness 2. Soundness; 3. Consistency; 4. Setting Time; 5. Heat of hydration; 6. Strength of Cement; 7. Compressibility; Chemical Properties of Cement. a. Lime; b. Alumina; c. Sulfur xide; d. Iron oxide; e. Silica; f.
Some key parameters control the quality of cement. The physical properties of good cement are based on: 1) Fineness of cement. 2) Soundness. 3) Consistency. 4) Strength. 5) Setting time. 6) Heat of hydration. 7) Loss of ignition. 8) Bulk density. 9) Specific gravity (Relative density) 1) Fineness of Cement. The size of the particles of the cement is its fineness.
(a) Soundness Test: It is conducted by sieve analysis. 100 gms of cement is taken and sieved through IS sieve No. 9 for fifteen minutes. Residue on the sieve is weighed. This should not exceed 10 per cent by weight of sample taken. (b) Setting Time: Initial setting time and final setting time are the two important physical properties of cement. . Initial setting time is the time taken by the
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Some key parameters control the quality of cement. The physical properties of good cement are based on: Fineness of cement; Soundness; Consistency; Strength; Setting time; Heat of hydration; Loss of ignition; Bulk density; Specific gravity (Relative density) These physical properties are discussed in details in the following segment.
Properties of Cement Physical amp; Chemical Civil Engineering
The ability of cement paste to flow is consistency. It is measured by Vicat Test. In Vicat Test Cement paste of normal consistency is taken in the Vicat Apparatus. The plunger of the apparatus is brought down to touch the top surface of the cement.
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Physical Tests on Cement (a) Soundness Test: It is conducted by sieve analysis. 100 gms of cement is taken and sieved through IS sieve No. 9 for fifteen minutes. Residue on the sieve is weighed. This should not exceed 10 per cent by weight of sample taken.
#0183;#32;Here we have discussed properties of cement. Properties of cement can be classified in two categories, one is physical properties of cement and second is chemical properties of cement. The properties of cement mostly depend on its composition raw materials, carefulness while burning and grinding process. (a) Physical Properties of Cement
Testing Of Cement: Physical Tests (IS: 4031) Fineness Test . The degree of fineness of cement is the measure of the mean size of the grains in it. There are three methods for testing fineness: the sieve methodusing 90 micron (9 No.) sieve, the air permeability methodNurse and Blains method and the sedimentation methodWagner turbidimeter method.
Such tests of cement are called field tests of cement and anyone who is constructing his/her home must know and use such tests, to get returns on money spent. Like other materials, cement has a mainly two properties, physical and chemical. Due to these properties, cement plays a significant role to provide structural strength.
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