The durability of concrete is influenced by alkali aggregate reaction(AAR).
碱集料反应是影响混凝土耐久性的重要方面。
Alkali is one of the important factors that can cause alkali-aggregate reaction (AAR).
碱是混凝土发生碱-集料(aar)反应的重要因素之一。
Moreover, the alkalinity is low and the alkali-aggregate reaction of the cement concrete is inhibited;
碱度低，可抑制泥凝土碱集料反应；
Alkali aggregate reaction is one of the important factors that affect the durability of concrete structures.
混凝土碱-骨料反应是引起混凝土耐久性下降的主要原因之一。
Small admixture, completely water soluble, low alkali, apparent reducing effect on the alkali-aggregate reaction.
掺量小、无载体、全水溶、低碱，对碱一骨料反应有明显的减少作用。
Alkali aggregate reaction (AAR) is one of the important factors that affect the durability of concrete structures.
混凝土碱-骨料反应(aar)是引起混凝土耐久性下降的主要原因之一。
The two important factors of affect concrete durability are AAR (Alkali aggregate reaction) and freeze-thaw cycles.
碱骨料反应和冻融循环是影响混凝土耐久性的两个重要因素。
Identifying the alkali reactivity of aggregate is a most important measure to prevent form alkali aggregate reaction (AAR).
集料碱活性检测是预防碱集料反应(aar)的重要措施。
The system contains such content as computer aided design of concrete engineering, alkali aggregate reaction evaluating, literature search, etc.
系统包括混凝土工程辅助设计、碱集料反应评估、文献检索等内容。
Whereas the complexity of alkali-aggregate reaction and in order to guarantee the durability and use security of concrete, it should strictly control the alkali content of cement.
鉴于碱-骨料反应的复杂性，为了确保混凝土的耐久性和使用安全，需要严格控制水泥的含碱量。
The combined effect of natural zeolite and fly ash on alkali-silica reaction (ASR) of concrete was studied with natural alkali-reactive aggregate and quartz glass aggregate respectively.
用天然活性骨料和石英玻璃骨料研究了粉煤灰与沸石的复合对碱-硅酸反应(asr)的影响。
The effects of the reactant mixing patterns on the reaction mechanism, chemical content, particle morphology and aggregate structure were investigated mainly.
着重考察了反应气混合方式对反应机理、化学含量、粒子形态及凝聚结构的影响。
As a representative alkaline aggregate, nepheline was selected and the effect of it on the expansion of alkali-silica reaction was studied.
以霞石正长岩为代表，研究了含碱集料对碱-硅酸反应膨胀的影响。
The invention relates to cross-linked enzyme aggregate for catalyzing reaction of macromolecule substrate and a preparation method thereof.
本发明涉及一种催化大分子底物反应的交联酶聚集体及其制备方法。
After the graft reaction of ungelatinized starch, the morphology of the copolymers kept the aggregate structure of starch, and vinyl copolymer is grafted on its surface;
结果表明，合成的淀粉接枝共聚物符合预期结构，未糊化的淀粉接枝后，聚合物保持团粒结构，表面接枝上了乙烯基均聚物；
After the graft reaction of ungelatinized starch, the morphology of the copolymers kept the aggregate structure of starch, and vinyl copolymer is grafted on its surface;
结果表明，合成的淀粉接枝共聚物符合预期结构，未糊化的淀粉接枝后，聚合物保持团粒结构，表面接枝上了乙烯基均聚物；
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