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ACI METHOD OF CONCRETE MIX DESIGN Step 1. Choice of slump Step 2. Choice of maximum size of aggregate Step 3. Estimation of mixing water and air content Step 4. Selection of water/cement ratio Step 5. Calculation of cement content Step 6. Estimation of coarse aggregate content Step 7. Estimation of Fine Aggregate Content Step 8. Adjustments for Aggregate Moisture - Step 9. Trial Batch Adjustments

ACI METHOD OF CONCRETE MIX DESIGN Step 1. Choice of slump Step 2. Choice of maximum size of aggregate Step 3. Estimation of mixing water and air content Step 4. Selection of water/cement ratio Step 5. Calculation of cement content Step 6. Estimation of coarse aggregate content Step 7. Estimation of Fine Aggregate Content Step 8. Adjustments for Aggregate Moisture - Step 9. Trial Batch Adjustments

Fundamentals Of Construction Estimating
Fundamentals Of Construction Estimating
4th Edition
ISBN:9781337399395
Author:Pratt, David J.
Publisher:Pratt, David J.
Chapter11: Pricing Concrete Work
Section: Chapter Questions
Problem 4RQ
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FOLLOW THE STEPS PLS AND ANSWER SAMPLE 1 USING VOLUME METHOD

ACI METHOD OF CONCRETE MIX DESIGN Step 1. Choice of slump Step 2. Choice of maximum size of aggregate Step 3. Estimation of mixing water and air content Step 4. Selection of water/cement ratio Step 5. Calculation of cement content Step 6. Estimation of coarse aggregate content Step 7. Estimation of Fine Aggregate Content Step 8. Adjustments for Aggregate Moisture Step 9. Trial Batch Adjustments STEP 7 - Estimation of Fine Aggregate Content V=W VOLUME METHOD SWeight of water density of water Weight of cement 3. 15 x density of water Weight of CA S. g) of CA X density of water WATER CEMENT ) s.g. COARSE AGGREGATES AIR %Air x Volume of Concrete AIR %Air x Volume of Concrete STEP 7 - Estimation of Fine Aggregate Content VOLUME METHOD Volume of FA = V conc – V Cement – V water – V cA – V Air /-
Transcribed Image Text:ACI METHOD OF CONCRETE MIX DESIGN Step 1. Choice of slump Step 2. Choice of maximum size of aggregate Step 3. Estimation of mixing water and air content Step 4. Selection of water/cement ratio Step 5. Calculation of cement content Step 6. Estimation of coarse aggregate content Step 7. Estimation of Fine Aggregate Content Step 8. Adjustments for Aggregate Moisture Step 9. Trial Batch Adjustments STEP 7 - Estimation of Fine Aggregate Content V=W VOLUME METHOD SWeight of water density of water Weight of cement 3. 15 x density of water Weight of CA S. g) of CA X density of water WATER CEMENT ) s.g. COARSE AGGREGATES AIR %Air x Volume of Concrete AIR %Air x Volume of Concrete STEP 7 - Estimation of Fine Aggregate Content VOLUME METHOD Volume of FA = V conc – V Cement – V water – V cA – V Air /-
SAMPLE 1 Design a concrete mix for construction of an elevated water tank. The specified design strength of concrete is 30 MPa at 28 days measured on standard cylinders. The specific gravity of FA and C.A. are 2.65 and 2.7 respectively. The dry rodded bulk density of C.A. is 1600 kg/m3, and fineness modulus of FA is 2.80 Ordinary Portland cement (Type I) will be used. 5.9.&15 C.A. is found to be absorptive to the extent of 1% and free surface moisture in sand is found to be 2 per cent.
Transcribed Image Text:SAMPLE 1 Design a concrete mix for construction of an elevated water tank. The specified design strength of concrete is 30 MPa at 28 days measured on standard cylinders. The specific gravity of FA and C.A. are 2.65 and 2.7 respectively. The dry rodded bulk density of C.A. is 1600 kg/m3, and fineness modulus of FA is 2.80 Ordinary Portland cement (Type I) will be used. 5.9.&15 C.A. is found to be absorptive to the extent of 1% and free surface moisture in sand is found to be 2 per cent.
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