新疆地区建筑工程混凝土碱骨料反应的潜在危害

Possible Danger of the Concrete Alkali-aggregate Reactions in Some Construction Projects of Xinjiang

对新疆地区建筑工程混凝土是否存在发生碱骨料反应的隐患进行了研究。结果表明,乌鲁木齐和库尔勒两个有代表性的地区的建筑用砂石骨料均为碱活性骨料,混凝土的碱含量高于GB50010—2002《混凝土结构设计规范》规定的最大碱含量3.0kg/m3的限值,已具备发生碱骨料反应的条件,存在混凝土碱骨料反应破坏的严重隐患,应采取有效的预防控制措施。

Here is a study about whether there exists a hidden danger of the alkali - aggregate reactions in the concrete used in some construction projects of Xinjiang. The result from the study indicates that the construction sandstone aggregate used in the two typical regions like Urumqi and Ku ＂erle is alkali -reactive aggregate and its alkali content is above the standard limited range of the highest content of 3. 0 kg/m^3 provided in The Structure Design Regulation of Concrete （GB 50010--2002 ）and has obtained the necessary conditions for the alkali - aggregate reactions. But owing to the seriously latent threat to the concrete alkali -aggregate reactions, some effective preventative and control measures should be resorted to.