536 Calculate e the fineness modulus of aggregate A in Probl

5.36 Calculate e the fineness modulus of aggregate A in Problem 5.27. Is your an the fineness modulus of aggregate A in Problem 5.27. Is v within the typical range for fineness modulus? If not, why not? et

Solution

(5.36) Solution:- Aggregate A

Seive size(mm)            % passing             % Retained                Cumulative % retained

25                                   100                          0                                     0

19                                92                             8                                       8

12.5                             76                             24                                      32

9.5                               71                             29                                      61

4.75                             53                              47                                      108

2.36                           38                              62                                         170

1.18                            32                             68                                         238

0.6                               17                            83                                          321

0.3                               10                            90                                          411

0.150                          5                                95                                           506

0.075                         3                                 97                                           603

                                                                          cumulative % retained =2458

Fineness modulus of aggregate A = cumulative % retained/100

                                                         = 2458/100

                                                        = 24.58

Maximum size of aggregate A is 19 mm

For 19 mm Aggregate , fineness modulus should be between 6 to 6.9

So Fineness modulus of aggregate A is not in range. So aggregate is not accepted.

Fineness modulus of aggregate A is maximum because small size aggregates are present in more quantity than large size aggregate

(5.27) (a) Answer

Maximum size of Aggregate A= 19 mm

Maximum size of Aggregate B = 12.5 mm