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配合比优化设计以济宁地区某大型桥梁建设需要为目标,在采用当地鲁南中联牌普通硅酸盐水泥、砂石、运河电厂Ⅰ级粉煤灰和NJ-C外加剂的前提下,利用正交试验方法开展配合比优化设计研究,采用极差和方差手段分析了影响高性能混凝土7d和28d强度的主要因素,在满足工作性和耐久性的前提下选择并优化配合比,为该地区在就地取材条件下配制高性能混凝土的可行性和实用性提供参考。
With the optimal design of the proportion of Jining area to a large bridge construction needs as the goal, using the local Lonan Zhonglian ordinary portland cement, gravel, Canal Power Plant Grade I fly ash and NJ-C admixture under the premise of Orthogonal test method to optimize the design of the proportion of research, the use of range and variance means to analyze the strength of high performance concrete 7d and 28d the main factors in the premise of meeting the workability and durability under the premise of selecting and optimizing the mix for the region Provide reference for the feasibility and practicability of preparing high performance concrete under local conditions.