High mixing amount iron tailing sand high intensity concrete and preparation method thereof

Abstract

The invention discloses high mixing amount iron tailing sand high intensity concrete and a preparation method thereof. The high mixing amount iron tailing sand high intensity concrete comprises the following components: mixed sand, concrete, coal ash, mineral powder, broken stone, water and a composite additive, wherein the mixed sand adopts iron tailing sand and natural medium sand, the iron tailing sand replaces the natural medium sand in weight percentage, namely the weight percentage of the iron tailing sand in the mixed sand is 60 to 70 percent, and the fineness modulus of the iron tailing sand is 1.9 to 2.6. According to the method provided by the invention, the fineness modulus is selected according to chemical component analysis and grading analysis to the iron tailing sand; the iron tailing sand, the natural medium sand, the cement, the coal ash, the mineral powder, the broken stone, the water and the composite additive are prepared according to working mix proportion. According to the concrete, not only can the performance of a concrete mixture be improved, but also the cohesiveness of the concrete is better, the phenomena of bleeding, separating and the like can be reduced, the high mixing amount of iron tailing sand cannot cause any influences to the intensity of the concrete, an effect of comprehensive utilization to the resource of iron ore tailing can be played, the environment is protected, and the production cost is lowered.

Description

technical field [0001] The invention relates to concrete, which belongs to the technical field of building materials, in particular to a high-strength concrete with a large amount of iron tailing sand. The invention also relates to a method for the preparation of said concrete. Background technique [0002] With the rapid development of social modernization, the use of high-strength concrete in the field of construction engineering in my country is becoming wider and wider. However, at present, all the fine aggregates in high-strength concrete are natural medium sand, and the quality and quantity of sand are also highly required. With the continuous mining of a large amount of natural sand, its resources are also facing depletion, so it is necessary to find suitable sand substitute materials. With the rapid development of my country's iron and steel industry, the amount of iron ore mining continues to increase, and the waste slag discharged from the dressing plant is also ...

AI Technical Summary

Problems solved by technology

In the prior art, the utilization of iron tailings is less, and the discharge of a large amount of iron tailings not only occupies a large amount of land, but also pollutes the environment

The above technology does not provide specific guidance on how the present invention can improve the performance of the concrete mixture, further improve and ensure the strength of concrete, energy saving and environmental protection

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