Method for preparing concrete admixture by utilizing oyster shells and applications

Abstract

The invention provides a method for preparing a concrete admixture by utilizing oyster shells, which belongs to the field of comprehensive utilization of solid wastes, and can solve the problem of oyster shell pollution, the concrete cost, the carbon emission and the like. By fully utilizing the biomaterial characteristics of the oyster shells, the milled oyster shells are used as the concrete admixture and can directly replace part of the cement in a concrete mixture without changing the original performances of the concrete. The invention has the advantages of simple process and low cost, can change all the oyster shells into valuables, has strong market competition capability and high popularization and application value, promotes the sustainable coordinated development of social economy and environment, and is of great importance.

Description

technical field [0001] The invention relates to utilizing the waste oyster shells in daily life to replace part of the cement in the concrete batch, and belongs to the field of comprehensive utilization of building materials and solid waste. Background technique [0002] With the rapid development of my country's economy and society, the amount of concrete used is increasing, and the demand for cement is increasing, which is accompanied by the depletion of mineral resources and the sharp increase of carbon emissions. On the other hand, oysters are delicious and have high nutritional value, and are deeply loved by people. In recent years, the oyster farming industry has developed rapidly, and a large number of oyster shells have been discarded, which not only causes environmental pollution, but also is a waste of resources. There are few research reports on the comprehensive utilization of oyster shells, and a method that can completely eliminate pollution and fully utilize o...

AI Technical Summary

Problems solved by technology

In recent years, some people have conducted research on the preparation of active calcium by using oyster shells, which are mainly used for calcium supplementation in the human body, and are also used in additives such as cement, paint, and feed, but the consumption of oyster shells is still very limited

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