Efficacy concrete block detection

Mixing station nominally skills , in May 2010 , they have always mixing station nearly six months to the construction side of the Palazzo Vecchio Triangle affordable housing delivery concrete , concrete block efficacy detect how many groups do not pass the Concrete Mixing Truck Construction Commission relating to this end cover half of the floor portion of the organized search, concrete strength invention has been used to cover the floors of non-compliance . He and Wang Guodong Daxing Palazzo Vecchio triangle to the construction site , with a measuring instrument to detect it, the invention of concrete strength before reaching the 50% or 60% of the scale . Why do you cement mixing machine  oncrete strength so much ? How the ratio , in order to control costs, the ratio of raw materials secretly changed , to put some more homemade ingredients , put some less expensive .