In the current mix proportion design specifications in China, JGJ55-2011 “Code for Design of Ordinary Concrete Mix Proportion” is one of the commonly used mix proportion design methods.
In JGJ55-2011 “Code for Design of Ordinary Concrete Mix Proportion”, the basic ideas and parameters of ordinary concrete mix proportion design are specified.
This code is based on the statistical results of a large number of experiments and uses the Baum formula (i.
e.
water cement ratio rule) to design the mix proportion of concrete.
Therefore, this code is applicable to the design of ordinary concrete mix proportion.
For special concrete and high-strength concrete, it is emphasized that based on experience, appropriate materials and mix proportions must be selected through multiple repeated tests using the materials used in the project.
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