ABSTRACT
The chapter discusses mix proportioning for versatile purposes, including interactions between various mix properties and proportion of concrete, making it more understandable to overcome difficulties faced in troubleshooting. The chapter has been supplemented by numerous graphs, which cut down the calculations to easily find the proportion of concrete for desired properties. The various corrections applied to the mix proportion have reasons behind them. Many standard methods have provided curves and tables to find water cement ratio for given target strength of concrete, whereas this chapter provides a function that predicts the water cement ratio required to achieve the strength based on the cement strength declared by supplier at 28 days when tested as per standard.
To get the required strength of concrete, a certain water cement ratio is chosen, but after 28 days you realise the strength is not achieved, how will you immediately arrive on a mix proportion based on the achieved 28-days’ strength, which will meet the strength criteria and will be economical too?
How is water content decided in concrete proportioning?
Should aggregate proportions be the same for different cement content, or should it vary?
