This document provides the recommended mix proportions for concrete with a target strength of M30 according to IS 10262-2009 standards. The mix achieved a compressive strength of 38.25 MPa at 7 days, which exceeds the specified 30 MPa strength. The mix has a water-cement ratio of 0.42, with a cement content of 456 kg/m3. The mix proportions are 1 part cement to 1.322 parts fine aggregate to 2.342 parts coarse aggregate to 0.523 parts water by weight.

1. CIVIL ENGINEERING DEPARTMENT
RECOMMENDED MIX PROPORTIONS FOR CONCRETE M30
[ AS PER IS 10262-2009 ]
Sr.No. DESCRIPTION MIX (TRIAL) NO:1
1. Strength at days(
W
ͽͽ
)
A
Specified works cube
strength
30
W
ͽͽ
B
Laboratory Design Strength 38.25
W
ͽͽ
2. WORKABILITY
A Slump (mm) 111 mm
B Compaction Factor (%) 0.915
3. Degree of control Good
4. Method of Compaction Table Machine Vibrator
5. Maximum Nominal size of
aggregate(mm) taken For calculation
20mm
6. Water cement ratio by Weight
A Free 0.45
B Actual 0.42
7. Mix proportions
Cement : F.A : C.A : Water
Cement F.A. C.A. Water
1.000 1.322 2.342 0.523
6 7.932 14.052 3.138

2. 8. Aggregate cement ratio by Weight 3.664 : 1.000
9.
Cement content (
ͭX
ͽͽ
) MIN MAX
A Theoretical 320 480
B Actual 456 _
10. Laboratory Cube Strength obtained (
W
ͽͽ
)
After curing
A 3 Days
(Normal curing method)
B 7 Days
(Normal curing method)
C 28 Days
(Normal curing Method)
11. Unit Weight of Fresh Concrete (
ͭX
ͽ
) 6097.27
ͭX
ͽ