混凝土中的碱类——骨料反应,是一个新的问题。这问题关系到混凝土的耐久性。在国外曾经有成千上百的建筑物,包括混凝土壩、桥樑,道路,发生了碱类——骨料反应。有一些建筑物,在施工以后短短的几年之间,发生大量的裂缝,呈现极其严重的膨胀,因而使整个建筑物崩坏。因此,在以往的二十几年中,有许多科学研究工作者,对这问题进行研究。到如今,人们对于碱类——骨料反应,已经有了一定的认识,碱类——骨料反应的机构,一部分问题已经得到解决。现在已经有一些 Alkali-aggregate reaction in concrete is a new problem. This issue is related to the durability of concrete. There are hundreds of buildings abroad, including concrete dams, bridges, roads, and alkali-aggregate reactions have taken place. In some buildings, a large number of cracks occurred after just a few years of construction, causing extremely serious expansion, thus causing the entire building to collapse. Therefore, in the past two decades, many scientists and researchers have studied this issue. Up to now, people have some knowledge about alkali-aggregate reaction, and some problems of alkali-aggregate reaction mechanism have been solved. There are already some now