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一、前言混凝土工程结构的耐久性是一个有关国民经济发展的重大问题。混凝土丧失耐久性造成的直接和间接经济损失一般以数十至投百万元计.虽然我国在耐久性方面的损失无详细统计,但可以推断是惊人的。作为混凝土耐久性主要内容之一的碱骨料反应(简称 AAR),在全世界造成的巨大损失有目共睹,国内已有大量文章涉及这方面的内容。近年来,随着我国 AAR 研究的深入开展,发现和证实了我国不仅存在 AAR 的破坏,而且活性骨料广泛分布。
I. INTRODUCTION The durability of concrete structures is a major issue related to the development of the national economy. The direct and indirect economic losses caused by the loss of concrete durability are generally measured in the range of tens to millions of dollars. Although there is no detailed statistics on the loss of durability in China, it can be inferred that it is surprising. The alkali-aggregate reaction (abbreviated as AAR), which is one of the main contents of concrete durability, has caused tremendous losses in the whole world. There are a large number of articles in this area in China. In recent years, with the in-depth development of China’s AAR research, it has been found and confirmed that China not only has the destruction of AAR, but also the active aggregate is widely distributed.