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前言随着现代建筑的高层化、大跨化、地下化及使用环境的复杂化,在建筑工程中所使用混凝土的强度逐渐提高。目前,人们已在海洋深处建筑大型的结构物,在辽阔的海面上建造巨大的工作平台,在城市里建造超高层大厦以及各种大型的地下建筑物工程等等。所有这些新型建筑和巨型工程都对混凝土的强度和耐久性提出了更高的要求,而高强混凝土配合比是工程应用首要解决的问题。由郑州铁路工程总公司施工的泰昌大厦(地下2层,地上25层),由河南省建筑设计研究院设计,8层以下钢筋混凝土柱及墙混凝土标号设计为C_(50)。因此,C_(50)高强混凝土配合比研制成功与否直接关系到该工程的成败。我们通过大量的调查、分析、计算,终于研制出
Preface With the high level of modern architecture, large span, the complexity of the underground and the use of the environment, the strength of concrete used in construction projects gradually increased. At present, people have built large structures deep in the ocean, built huge working platforms on the vast sea, built super-high-rise buildings in cities and various large-scale underground structures. All of these new buildings and mega-projects put forward higher requirements on the strength and durability of concrete, and the high-strength concrete mix is the primary solution to engineering applications. The Taichang Building (2 stories underground and 25 stories above ground) constructed by Zhengzhou Railway Engineering Corporation was designed by Henan Architectural Design and Research Institute. The design code of reinforced concrete column and wall concrete below 8 stories is C 50. Therefore, C_ (50) high-strength concrete mix is directly related to the success or failure of the project. We have finally developed through a lot of investigation, analysis and calculation