1.  Mix Proportion  Tasks  Basic Requirements  Principle  Steps and Methods  Design of Preliminary Mix  Ascertaining the basic mix proportion  Laboratory mix Proportion  Working Mix Proportion §4.6 Mix Proportion Design of Concrete

2. Principle of Mix Proportion Design of Concrete rule of concrete performance performance W/CSp W0W0W0W0 WCS G

3. Principle of Mix Proportion Design of Concrete The basic theory of mix proportion design is based on the change rule of concrete performance. Normal concrete mix proportion has four basic variables: C ， W ， S ， G Three proportions W/C-The ratio of water to cement. Sp-The ratio of sand to gravel. W 0 -The quality of water in 1m 3 concrete- ration of cement paste to aggregates.