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基于有效控制大体积混凝土产生裂缝最为有效的方式为降低混凝土的水化热,在进行混凝土配合比设计考虑采用60d强度做为评定依据,提高部分掺合料用量,利用混凝土28～60d之间的强度后增长可以达到减少水泥用量的目的而有效的解决该问题。执行新的计价模式后,基础底板施工涉及到混凝土及钢筋这两大可控经济指标的控制。在集团公司目前的施工管理上可看出可控成本可挖掘潜力有限,采用60d强度做为评定依据可降低混凝土的单方造价。
Based on the effective control of cracks in mass concrete, the most effective way is to reduce the hydration heat of concrete. 60d intensity is taken into consideration in the design of concrete mix ratio, and the dosage of some admixtures is increased. After the increase in strength can achieve the purpose of reducing the amount of cement and effectively solve the problem. After the implementation of the new pricing model, the construction of foundation slab involves the control of two controllable economic indicators, concrete and steel. The current construction management in the Group can be seen that the controllable costs can be tapped with limited potential, using 60d strength as a basis for assessment can reduce the unilateral construction cost of concrete.