大体积混凝土出机口温控参数经济性优化研究OACSTPCD

For the selection of mixing parameters for large volume concrete outlet temperature control the traditional method is to determine the temperature control parameters according to the specification requirements and engineering experiences together with little consideration of economy and there are problems of poor temperature control measures and high project cost.In order to achieve the standard temperature at the outlet of large volume concrete while effectively controlling the production cost an optimization model for the economy of temperature control parameters at the outlet of large volume concrete is proposed which takes the temperature of cooling water the temperature of coarse aggregate and the ice addition rate as optimization variables and the lowest temperature control cost at the outlet as the optimization target.It is verified through engineering examples that the temperature control cost can be reduced by 2.47 Yuan/m3 which is 9.4%lower than the economic cost of the previous scheme under the premise of meeting the requirement of concrete outlet temperature of 14℃.It also shows the feasibility and practicality of the method which can provide an important reference for the optimization of temperature control parameters of the concrete outlet.