Tsp Iv

  • October 2019
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TSP IV Nama : Andrew Johanes NIM

: 071.06.009

1. Jelaskan apa 1 mesh itu! 2. Hasil data sieve analysis sebagai berikut : Tyler sieve

Diameter

% Retained

No.

Opening (mm)

10 20

1,651 0,833

0,06 0,12

30

0,522

0,7

40

0,371

2

50

0,283

4,3

60

0,246

12

80

0,175

30

100

0,147

18

140

0,106

15

200

0,074

5

Pan

<0,074

sisanya

3. Bagaimanakah So pada hasil diatas? 4. Informasi apa saja yang akan diperoleh pada percobaan IV ini? 5. Jelaskan pengoperasian sieve shaker pada percobaan IV!

JAWAB :

1. 1 mesh adalah ukuran sieve standart dimana dalam 1 inch² terdapat satu lubang.

2.

Diameter @ 25 % = x – x1 = y – y1 x2 – x1 y2 – y1 = 25 – 20 = y - 0,833 30 – 20 0,522 – 0,833 = 5 = y - 0,833 10 - 0,311 = - 0,311 = 2y - 1,666 y = 0,677 = 0,7

Diameter @ 75 % = 75 – 60 = y - 0,246 80 – 60 0,175 – 0,246 = 15 = y – 0,246 20 - 0,071 = - 0,213 = 4y – 0,984 y = 0,1927 = 0,2

a. Sorting Coefficient = √ 0,7 = √ 3,5 = 1,87 √ 0,2 b. Median Diameter @ 50 % = 0,283 mm

3. So < 2,5 → pemilahan baik (well sorted)

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