Full high titanium heavy slag concrete mixed with micropowder and its preparation method

Abstract

The invention belongs to the field of concrete, and specifically relates to a micro powder-mixed complex high titanium heavy slag concrete and a preparation method thereof. The raw materials of the concrete comprise, based on the concrete per cubic metre, cement 281.74-402kg, high titanium heavy slag sand 522-566kg, high titanium heavy slag rubble 1245-1293kg, high titanium heavy slag micro powder 40.2-120.6kg, and water 185-195kg. The method uses high titanium heavy slag micro powder to replace part of cement, the concrete prepared by controlling proper ratio of raw materials has early strength effect, and the 7d strength of the concrete can reach over 68% of 28d strength of the concrete, so that the concrete can play a significant role in application of the engineering having early strength requirement of the concrete.

Description

technical field [0001] The invention belongs to the field of concrete, and in particular relates to a micropowder-doped full-high titanium heavy slag concrete and a preparation method thereof. Background technique [0002] High-titanium blast furnace slag is a kind of dense slag with a certain strength formed by the natural cooling or water cooling of the molten slag produced when Panzhihua Iron and Steel's ordinary blast furnace smelts vanadium-titanium magnetite. Compared with ordinary blast furnace slag, titanium dioxide (TiO 2 ) content as high as 20% to 24% (due to the high titanium content of high-titanium blast furnace slag, also known as high-titanium heavy slag), the content of calcium oxide is low, that is, the water slag produced by this raw material is an inactive material. Therefore, climbing Up to now, more than 55 million tons of high-titanium blast furnace slag have not been used, which covers an area of ​​thousands of acres, and the amount of slag discharge...

AI Technical Summary

Problems solved by technology

For the utilization of titanium extraction, although it is the most ideal goal to realize the value of high-titanium heavy slag, due to the current technical constraints, the utilization cost is high, and the consumption of blast furnace slag is also extremely limited. At present, Pansteel's slag is piled up in large quantities, occupying land, and polluting the environment. The most urgent task is to take the way of using high-titanium heavy slag as building materials.

[0004] At present, the research on using high-titanium heavy slag as coarse and fine aggregates to make concrete is relatively common, but it is limited to coarse and fine aggregates, and has not yet involved the replacement of cementitious materials by micropowder. The development of related work in the present invention has the greatest impact on high-titanium heavy slag The wide application of chemical utilization to make concrete has certain theoretical and economic significance

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