Freeze-thaw-environment-resistant fiber composite recycled concrete column and preparation method thereof

Abstract

The invention provides a freeze-thaw-environment-resistant fiber composite recycled concrete column which is prepared from the following raw materials in parts by weight: 1 part of cement, 0.53 part of water, 1.86 parts of sand, 1.72 parts of primary coarse aggregate, 1.72 parts of recycled coarse aggregate, and fiber 0-8 kg / m<3>. Concrete column. The recycled coarse aggregate is waste concrete, and the primary coarse aggregate is natural cobblestone. The fiber is composed of at least one of CFRP, BFRP, AFRP, GFRP and steel fiber, and is used as a building material or reinforcement material. The invention also provides a method for preparing the concrete column. The concrete column has the advantages of freeze-thaw environment resistance, beautiful appearance, environmental protection and energy saving, and is easy to prepare.

Description

technical field

[0001] The invention belongs to the field of concrete, and in particular relates to a fiber composite regenerated concrete column resistant to freezing and thawing environments and a preparation method thereof. Background technique

[0002] With the rapid development of my country's market economy and the continuous improvement of the level of urbanization, the amount of construction waste generated due to planning, demolition and reconstruction has increased sharply. Too much waste. According to statistics, my country produces hundreds of millions of tons of construction waste every year, which accounts for 30% to 40% of urban waste. Coupled with the frequent occurrence of natural disasters in my country in recent years, the resulting building damage has produced a large amount of construction waste. For example, the construction waste generated after the Wenchuan Earthquake reached 300 million tons. If such a large amount of construction waste is simply d...

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