Project on Concrete Mix Design for various grades of Concrete

PROJECT: Project consists of 2 parts

Part 1 - Concrete Mix Design for M35 grade concrete with fly ash

Part 2 - Concrete Mix Design for M50 grade concrete without Fly ash

AIM & INTRODUCTION : 

• To Calculate the Concrete Mix Design for M35 grade concrete with fly ash & M50 grade concrete without Fly ash
• Concrete mix design is the method of finding the precise proportion of cement, sand and aggregates for concrete to achieve the target strength in structures, therefore concrete mix design can be stated as concrete mix in terms of cement: sand: aggregates. 
• The design is done according to the requirements of concrete strength. So, we can achieve the desirable properties of concrete either it is in fresh stage or in hardened stage.

OBJECTIVE:

To prepare a concrete mix design for M35 grade concrete containing fly ash and M50 grade concrete. 

IS CODES USED:

• IS 456:2000
• IS 10262:1982

EQUATIONS USED:

1)Target mean strength

f’ck =fck + 1.65s

Where

• f’ck = target average compressive strength at 28 days
• fck = characteristics compressive strength at 28 days, and
• s = standard deviation

2)Cement content

Cement content = water content / water-cement ratio

3) Volume Calculations

• (a) Volume of concrete
• (b) Volume of cement = [Mass of cement] / [Specific Gravity of Cement] x 1/1000
• (c) Volume of water = [Mass of water] / [Specific Gravity of water] x 1/1000
• (d)Volume of chemical admixture = [Mass of admixture] / [Specific Gravity of admixture] x 1/1000
• (e) Volume of all in aggregate =[a-(b+c+d)]
• (f) Mass of coarse aggregate= e x Volume of Coarse Aggregate x Specific Gravity of Fine Aggregate x 1000
• (g) Mass of fine aggregate= e x Volume of Fine Aggregate x Specific Gravity of Fine Aggregate x 1000

(Design procedure and Design steps attached along with the submission.)