Summer Internship in Ultratech Concrete

1. SUMMER TRAINING AT
Ultratech RMC
SUBMITTED BY:
Abhimanyu Saraswat

2. Truck
washing
entry
Weighing
area
quality store ticket
Yamuna
sand/red
sand
20 mm
10 mm
hopper
mixer
T.M
repair
silo silo silo
pump
truck
LAYOUT OF THE PLANT

3. MAIN THINGS DONE IN SUMMARY TRAINING
 TESTING
1) SLUMP TEST
2) SLIT TEST
3) BULK DENSITY
 WORKING OF A RMC PLANT
 DESIGN MIX OF CONCRETE

4. EQUPIMENTS OF MOST
IMPORTANT TESTS

5. TOTAL TEST DONE
 Sieve analysis
 Air entrainment meter
 Consistency (normal, initial and final)- not done
 Fly ash content
 Specfic gravity of fine & coarse aggregates
 Aggregate impact test
 Speedy moisture test
 Flakiness and elongation

6. WORKING PROCEDURE

8. FLOW CHART IN RMC

9. PROCESS IN
PICTURES

10. STORAGE OF 10 MM AND 20 MM

11. PUTTING AGGREGATES/SAND IN
HOPPER

12. BY CONVEYOUR BELT TO SKIP

13. SKIP TO MIXER

14. MIXER

15. CONTROL PANEL

16. READY TO MOVE

17. POURING OF CONCRTE IN PUMP AT SITE

18. DESIGN MIX BY IS 10262 AND 456
Step 1: f m=f ck+ 1.65σ.
Step 2 : selection of w/c
from curves .
Step 3: Estimate water
content & sand
contents for concrete
grades up to M35 up
M35/ above M35
w/c curve Steps of design

19. STEP 3 ADJUSTMENT IN WATER AND SAND
CONTENT
Condition Adjustment
Sand zone 1,3 and 4 (for 2 no
change)
No change in water content but
sand
-1.5% for zone 3,
1.5 % for zone 1
-3% for zone 4
Increase / decrease of Compaction
factor by 0.1
Water content increased by +_ 3%
No change in sand
w/c ratio increased or decreased by
0.05
No change in water content but +_
1% in sand content
For round aggregates -15kg/m3 for water and -7% for
sand

20. CONTD ….
 Step 4: Calculate cement content,
Aggregate contents,
1000
1
*)*
)1(
1
(
Sc
Ca
pSc
C
WV


1000
1
*)*
1
(
Sf
Fa
pSc
C
WV 

21. LAB CONCRETE MIXER

22. PROBLEMS EXPERIENCED
 Some sites are just too far away.
 Generation of road traffic.
 Concrete's limited time span between mixing and going-off
means that ready-mix should be placed within 10 minutes of
batching at the plant.
 Slump loss is also a major issue in RMC which result in a
loss to company as the buyer tends to reject the product.