The durability of buildings has always been a concern, and among the many factors that affect the durability of concrete, alkali-aggregate reaction is one of them. Antifreeze used in winter concrete construction in my country has high alkali content and large dosage, which is a hidden danger of causing AAR. This article selects organic and inorganic low-alkali materials, and uses the “superposition effect” to promote and stimulate each other, so that concrete mixed with low-alkali antifreeze can achieve good performance and strong frost damage resistance under the condition that the natural temperature is not lower than -15C. , The technical indicators meet the requirements of “Concrete Antifreeze” JC475-96 and achieve good results.
The durability of buildings has always been It is a matter of concern to people, and among the many factors that affect the durability of concrete, the alkali-aggregate reaction (Ackali-Aggregate reaction) is one of them. Instances of its destruction can be found in almost every country in the world. Over the past half century, numerous dams, bridges, highways, port buildings, overpasses, and industrial and civil buildings have been damaged by this reaction. Repairs and reconstructions are costly and have attracted great attention around the world. At present, various engineering constructions are in the ascendant in our country. If we can learn from foreign experience and lessons, combined with our country’s national conditions, and take targeted technical measures to prevent AAR and improve the durability of concrete projects, this will have huge economic and social benefits.
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