gRADATION.pptx

MAKENDRAN C

1. Gradation of Aggregates Indicates distribution of aggregate particles of varying sixes in a given volume of mixture. Dense or closely dense packing is usually desirable Aggregates are passed through set of sieves Weight retained on each sieves is used to calculate percentage passing Graphically is represented using a sieve size distribution curve . Different type of categories are Well graded - Gap graded Poorly graded 2/13/2023 CE 618 Advanced Highway Materials 1

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3. Sieve size (mm) Wt. Retained (gm.) Percentage of wt. Retained % Retained w.t/ Total w.t. * 100 Cumulative percentage Wt. Retained % Percent passing weight % 19 572 28.64 28.64 71.36 13.2 1048 52.47 81.11 18.89 9.5 215 10.78 91.89 8.11 4.75 162 8.11 100.00 0.00 2.36 0.00 100.00 0.00 1.18 0.00 100.00 0.00 0.6 0.00 100.00 0.00 0.3 0.00 100.00 0.00 0.15 0.00 100.00 0.00 0.075 0.00 100.00 0.00 Pan 0.00 100.00 0.00 1997 2/13/2023 CE 618 Advanced Highway Materials 3

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7. Single sized particle packing Variable size particle packing 2/13/2023 CE 618 Advanced Highway Materials 7

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10. https :// www.youtube.com/watch?v=VaK_2Zr_87Q 2/13/2023 CE 618 Advanced Highway Materials 10