Concrete admixture based on iron tailing powder and preparation method of concrete admixture

Abstract

The invention discloses a concrete admixture based on iron tailing powder and a preparation method of the concrete admixture. The concrete admixture is prepared from the following components specifically in percentage by weight: 59.7% of the iron tailing powder and natural gypsum, 25% of level-I coal powder ashes, 15% of S105 mineral powder, and 0.3% of a liquid functional conditioning agent. Irontailings used are prepared from the following components in percentage by weight: 62.13% of SiO2, 5.12% of CaO, 4.36% of MgO, 10.23% of Fe2O3 and 9.65% of Al2O3. According to the concrete admixture based on the iron tailing powder and the preparation method of the concrete admixture, through certain activating treatment, the pozzolanic activity of the iron tailings is shown, the iron tailings andother mineral admixtures are compounded in proportion to produce a synergistic effect, the different mineral admixtures are made to exert respective advantages, the effect of complementary to each other is reached, the iron tailings can be developed to be the concrete admixture, then the additional value of the iron tailings is improved, and the cost of cement concrete is further lowered.

Description

technical field

[0001] The invention relates to the technical field of concrete, in particular to a concrete admixture based on iron tailings powder and a preparation method thereof. Background technique

[0002] High-performance concrete is widely used because it can greatly improve the performance of conventional concrete. Mineral admixtures have become one of the essential components of high performance concrete. Some researchers even believe that it is precisely because of the development of mineral admixtures that the development and utilization of some chemical admixtures have been promoted, and the concept of high-performance concrete has also been promoted. The mineral admixtures commonly used at present include blast furnace slag, fly ash, silica fume and so on. While these commonly used mineral admixtures are widely used and developed in high-performance concrete, they also have a series of disadvantages such as insufficient supply, low density and difficult tran...

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