Tailing aggregate concrete and preparation method thereof

Abstract

The invention relates to the technical field of concrete preparation, and particularly discloses tailing aggregate concrete and a preparation method thereof. The tailing aggregate concrete comprises the following raw materials in parts by weight: 180-220 parts of cement, 70-90 parts of mineral powder, 0-45 parts of fly ash, 45-90 parts of limestone powder, 10-35 parts of modified wheat straw fiber, 500-750 parts of tailing sand, 200-400 parts of tailing stone chips, 900-1100 parts of tailing ore, 3-5 parts of a polycarboxylic acid high-efficiency water reducing agent and 160-180 parts of water; The preparation method comprises the following steps: step 1, mixing and stirring the cement, the mineral powder, the fly ash, the limestone powder, the wheat straw fibers, the tailing sand, the tailing chips and the tailings for 60-90s to obtain uniformly stirred premixed concrete; and 2, mixing and stirring other raw materials and the premixed concrete for 90-120 seconds to obtain the tailingaggregate concrete. The tailing aggregate concrete can be used in constructional engineering construction, and has the advantages of good fluidity, stable working performance and low production cost.

Description

technical field [0001] The application relates to the technical field of concrete preparation, more specifically, it relates to a tailings aggregate concrete and a preparation method thereof. Background technique [0002] In recent years, with the massive exploitation of natural resources, the country has gradually begun to restrict the exploitation of river sand in order to ensure the ecological environment, and some provinces and cities have begun to prohibit mining. Supply the needs of downstream enterprises. [0003] While natural sand resources are increasingly scarce, a large amount of tailings discharged during the development of domestic mineral resources have not been effectively utilized. With the improvement of mineral resources development, the mineable grade of ore decreases correspondingly, and the discharge of tailings also increases. The traditional tailings treatment method is generally to store the tailings in a harmless manner to prevent the tailings was...

AI Technical Summary

Problems solved by technology

The traditional tailings treatment method is generally to store the tailings in a harmless manner to prevent the tailings waste from being blown by the wind and washed away by the rain and transferred to other places to pollute the environment, but this traditional harmless treatment method is only in certain Controlling the spread of tailings pollution to a certain extent does not fundamentally solve the problem of tailings pollution accumulation

[0004] In related technologies, mine waste rocks and mineral processing plant tailings can be used as aggregates for railways, highways, ballast, and concrete, but the application of tailings in concrete is still at the stage of tailings sand and tailings powder. The preparation of tailings sand and tailings powder does not have a high utilization rate of tailings

Images