对半个世纪水泥质量发展道路的反思(Ⅰ)——我们是否正在渐行渐远

Reflection on development path of cement properties in last half century(I): are we going in a wrong way

本文引用的大量事例表明:已经使用了上百年的混凝土建筑物至今仍然完好,近几十年的建筑物却在使用短短的一二十年后迅速损坏。半个世纪以来,水泥质量似乎取得了巨大进步,但今天的混凝土却比几十年前更加缺乏耐久性。持续了六七十年的美国混凝土毁灭之路足以值得我们引以为鉴。本文及随后的两篇文章,通过回顾我国水泥质量的发展道路,试图探寻出水泥质量变迁与混凝土耐久性劣化的关系,并提出了修正水泥质量发展方向的路线图和对通用硅酸盐水泥标准框架的修改方案。

A large number of examples indicated that the concrete constructions that had been built in hundred years or even more ago were still intact, while the buildings that built in the past half-century were damaged after a short time(10-20years). In people's mind, the cement quality achieved significant progress, while in fact the concrete building had a worse durability compared with some decades ago. The road to destruction of US concrete constructions had been reported continuously since 60-70 years ago, which could be taken by us for reference. The development path of cement properties in China were reviewed in this paper and further research aiming to probe the relationship between the cement properties and concrete durability. The modified roadmap for China cement properties development and the revised scheme of the national Portland cement standard were proposed.