Modified superfine slag micro-powder with effect of concrete wear resistance improving, and preparation method thereof

Abstract

The invention relates to modified superfine slag micro-powder with an effect of concrete wear resistance improving, wherein the modified superfine slag micro-powder is prepared from the following raw materials by weight: 950-960 parts of slag, 40-45 parts of waste porcelain powder, 0.1-0.5 part of triethanolamine, 0.1-0.3 part of triisopropanolamine, 0.2-0.4 part of sodium oleate, 0.5-0.8 part of nanometer polytetrafluoroethylene, 80-100 parts of desulfurization gypsum, 0.1-0.3 part of triethanolamine sulfate salt, and 0.3-0.5 part of molasses. According to the present invention, the triethanolamine, the triisopropanolamine, the sodium oleate, the triethanolamine sulfate salt and the molasses are used, such that the residual charge on the micro-fine powder surface can be shielded, the Si-O bond cleavage in the slag can be promoted, the micro-fine powder aggregation can be prevented, and the grinding efficiency and the micro-powder fineness can be improved; the nanometer polytetrafluoroethylene is used, such that the surface energy is reduced, the particle agglomeration is prevented, the dispersibility of the micro-powder can be improved; and the waste porcelain powder is used, such that the grinding efficiency is improved, and the wear resistance and the hardness of the concrete are improved.

Description

technical field [0001] The invention relates to the field of preparation of slag micropowder, in particular to a modified ultrafine slag micropowder for improving the wear resistance of concrete and a preparation method thereof. Background technique [0002] At present, my country's iron and steel output is about 350 million tons, and the domestic average production of 1 ton of pig iron produces 0.50 tons of slag, and the output of my country's slag is about 175 million tons. Therefore, how to utilize the slag solid waste is a topic that Chinese metallurgical workers have been studying for many years, and it is also a practical problem that should be focused on in developing a circular economy, building a conservation-oriented society and an environment-friendly society. For a long time, slag is mostly used as a cement admixture, and it is ground together with cement clinker. From the perspective of resources, it can be said that the use of slag as an admixture of tradition...

AI Technical Summary

Problems solved by technology

Using ethylene glycol, triethanolamine and some inorganic salts as grinding aids improves the grinding efficiency, saves energy consumption and reduces mechanical wear, but it still cannot meet the needs of production, and it is necessary to improve the composition of slag powder. Improve the performance of cement