There is provided a process for producing concrete, comprising: in producing concrete, previously providing at least one premix composition for a concrete mix, which has been measured and prepared by 
automatic control means according to properties required of the concrete; and kneading and mixing the previously provided premix composition for a concrete mix with 
cement, coarse aggregate, fine aggregates, and water. There is also provided a standardizing 
system for concrete production, characterized by comprising: measuring constituents of a premix composition for a concrete mix with an 
automatic control device; mixing these constituents together essentially without through 
human power to prepare a premix composition for a concrete mix according to properties required of the concrete; storing the premix composition; measuring the 
mass of a 
slurry composition of the premix composition with an 
automatic control device essentially without through 
human power; and kneading and mixing the 
slurry composition with 
cement, coarse aggregate, water, and a 
chemical admixture. There is further provided a standardizing 
system for concrete production in a concrete production 
plant, comprising kneading and mixing the above 
slurry composition of the premix composition with 
cement, coarse aggregate, fine aggregate and water in the concrete production 
plant. Concrete satisfying designed and planned property requirements can be provided in an easy and stable manner.