Dry powder mortar as well as experiment and preparation methods thereof

Abstract

The invention relates dry powder mortar as well as experiment and preparation methods thereof. The dry powder mortar comprises water, cement, sand, air quench steel slags and steel slag micropowder, wherein the air quench steel slags and the sand commonly constitute a fine skeletal material; the steel slag micropowder and the cement commonly constitute a gelled material; yellow sand is used as fine aggregate to prepare basic mortar: the yellow sand is used as the fine aggregate to prepare the masonry mortar according to a national standard, and then various property indexes of the mortar are detected; the air quench steel slag with a particle size of below 4mm is used for replacing partial yellow sand as the fine aggregate, so as to find the optimum replace proportion: a dry powder mortarexperiment is carried out by using the masonry mortar as an experiment object, the air quench steel slags with the particle size of below 4mm are used for replacing the fine aggregate with different proportions of 50%, 60% and the like, so as to determine the optimum replace amount; and the steel slag micropowder is used for replacing the cement in different proportions so as to carry out a crossexperiment, and finally, the optimum doped proportion of the air quench steel slags and the steel slag micropowder is obtained.

Description

technical field [0001] The invention relates to the comprehensive utilization of metallurgical resources, in particular to a dry powder mortar and its experiment and preparation method. Background technique [0002] Maanshan Iron & Steel has a "wind crushed steel slag processing system with independent intellectual property rights of Maanshan Iron and Steel", and its production capacity accounts for more than 40% of the total steel slag. At present, Maanshan Iron and Steel's comprehensive utilization method for wind-milled steel slag is mainly to return to sintering, but because the P element in it will be continuously enriched during the cycle from sintering to steelmaking process, which affects steelmaking production and limits the return of wind-milled steel slag to sintering The allocation ratio of the current return ratio is 1-2%. Masteel's wind-milled steel slag has physical characteristics such as compact structure, high hardness, and small particles, and its particl...

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Problems solved by technology

[0009] According to the above search, there are many dry powder mortar preparation methods and processes at present, among which there are also cases of using steel slag sand, tailings sand, blast furnace water quenching slag, etc. precedent

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