Highly carbonization-resistant concrete

Abstract

The invention discloses a highly carbonization-resistant concrete which contains the following raw material components in parts by weight: 100 parts of cement, 15-35 parts of coal ash, 15-40 parts of kaolin, 10-15 parts of slag powder, 10-25 parts of coarse aggregate, 2-10 parts of quartz sand and 1-7 parts of a polycarboxylate superplasticizer. The highly carbonization-resistant concrete disclosed by the invention is low in porosity, high in density and weak in alkalinity, and a high anti-carbonization performance is achieved.

Description

technical field [0001] The invention relates to a concrete with high carbonation resistance performance, which belongs to the field of building materials. Background technique [0002] Concrete, as an indispensable and widely used building material in civil engineering, has always attracted a lot of attention from scientific researchers, especially a lot of research has been done on the durability, constructability, and strength of concrete. With the continuous development of concrete technology, improving the durability of concrete is an important subject of continuous research and exploration by material scientists from all over the world. Water erosion, cavitation erosion, freeze-thaw, infiltration, wear, concrete carbonation, steel corrosion and many other problems will cause great harm to the safety of buildings. Concrete has been damaged by carbonation, alkali-aggregate reaction, freezing damage, and salt damage since it was poured, among which carbonization is the mo...

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Problems solved by technology

[0003] Kaolin reserves in my country are abundant, ranking fifth in the world, but its development has only been in recent decades. At present, kaolin is widely used in coatings, papermaking, plastics, Rubber, advanced refractory materials and other fields, while there are very few reports on the application of kaolin in concrete