Importance of Different Testing on Road Aggregates Importance of different testing on road aggregates are as follows: 1. Abrasion test This test is performed to find out the hardness i.e resistance to abrasion of the stone aggregate. It is very important to know the aggregate hardness value before it used in road construction. 2. Impact…
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Different Size of Aggregates Used For Different Purposes For the same workability and strength, concrete having large size aggregate requires less amount of cement than in concrete having smaller size aggregate. Hence, in large bulk works large-sized aggregates are preferred. Leaser cement reduces the heat of hydration and thereby the shrinkage cracks. Use of…
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Grading of Aggregates The art of doing gradation (particle size distribution) of an aggregate as determined by sieve analysis is called grading of aggregate. The grading of aggregate has a considerable effect on workability, uniformity & finishing qualities of plastic concrete which ultimately affec& other properties of hardened concrete. Proportioning of Aggregates The art…
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Bulk Density of Aggregate The bulk density of an aggregate may be defined as the mass of the material in a given volume. It depends on how densely the aggregate is packed. The other factors affecting the bulk density are the particle size & shape, the grading of the aggregate and moisture content. Bulk density…
13 Types of Aggregates Following 13 types of aggregates are classified according to their size, shape, unit weight and geological origin: A. According To Geological Origin According to the geological origin, aggregates are the following two types: 1. Natural Aggregate Example of natural aggregate – Crushed Stone, Gravel etc. 2. Artificial Aggregate Example of artificial…
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Purpose of Different Testing of Aggregates The following tests are generally performed to find out the standard aggregate: Test for determination of Flakiness Index. Test for determination of Elongation Index. Test for determination of Clay, fine silt & fine dust. Test for determination of Organic Impurities. Test for determination of Specific Gravity. Test for determination…
Functions Of Fine Aggregate in Concrete Fine aggregates perform the following functions: 1. It assists in producing workability and uniformly in mixture. 2. It assists the cement paste to hard the coarse aggregate particles. 3. It helps to prevent possible segregation of paste and coarse aggregate particularly during the transport operation of concrete for…
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