READING NOTEDOWN MANUAL CONCRETE TECHNOLOGY
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This document provides the recommended mix proportions for concrete with a specified compressive strength of 30 MPa. The mix achieved a compressive strength of 38.25 MPa with a water-cement ratio of 0.42. The mix proportions were 1 part cement, 1.322 parts fine aggregate, 2.342 parts coarse aggregate, and 0.523 parts water by weight. The fresh concrete had a slump of 111 mm and compaction factor of 0.915.
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![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(
𝑵
𝒎𝒎 𝟐
)
A
Specifiedworkscube
strength
30
𝑵
𝒎𝒎 𝟐
B
Laboratory Design Strength 38.25
𝑵
𝒎𝒎 𝟐
2. WORKABILITY
A Slump(mm) 111 mm
B CompactionFactor(%) 0.915
3. Degree of control Good
4. Methodof Compaction Table Machine Vibrator
5. MaximumNominal size of
aggregate(mm) taken For calculation
20mm
6. Water cementratio by Weight
A Free 0.45
B Actual 0.42
7. Mixproportions
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](https://image.slidesharecdn.com/ct1-150921215827-lva1-app6891/85/READING-NOTEDOWN-MANUAL-CONCRETE-TECHNOLOGY-1-320.jpg)
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READING NOTEDOWN MANUAL CONCRETE TECHNOLOGY
- 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( 𝑵 𝒎𝒎 𝟐 ) A Specifiedworkscube strength 30 𝑵 𝒎𝒎 𝟐 B Laboratory Design Strength 38.25 𝑵 𝒎𝒎 𝟐 2. WORKABILITY A Slump(mm) 111 mm B CompactionFactor(%) 0.915 3. Degree of control Good 4. Methodof Compaction Table Machine Vibrator 5. MaximumNominal size of aggregate(mm) taken For calculation 20mm 6. Water cementratio by Weight A Free 0.45 B Actual 0.42 7. Mixproportions 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. Cementcontent( 𝑲𝒈 𝒎𝒎 𝟑 ) MIN MAX A Theoretical 320 480 B Actual 456 _ 10. Laboratory Cube Strength obtained( 𝑵 𝒎𝒎 𝟐 ) After curing A 3 Days (Normal curingmethod) B 7 Days (Normal curingmethod) C 28 Days (Normal curingMethod) 11. UnitWeightof FreshConcrete ( 𝑲𝒈 𝒎 𝟑 ) 6097.27 𝑲𝒈 𝒎 𝟑