Admixture prepared from gypsum activation steel slag and ore powder and high-performance concrete prepared from admixture

Abstract

The invention discloses an admixture prepared from gypsum activation steel slag and ore powder and high-performance concrete prepared from the admixture. The admixture is prepared by mixing steel slag, ore powder and gypsum according to the weight ratio of (8 to 10):(20 to 22):(1 to 3). The high-performance concrete is prepared from the following ingredients of 300 to 500 parts of gelled materials, 1000 to 1200 parts of stone materials, 600 to 700 parts of sand, 100 to 150 parts of water and 3 to 10 parts of water reducing agents, wherein the admixture accounts for 25 to 35 percent of total amount of the gel material. The gypsum is used for activating the activity of the steel slag; the mutual activation effect between the steel slag and the ore powder is utilized; the activity after the steel slag and the ore powder are mixed is improved; the high-activity admixture is used for replacing partial cement to prepare the concrete; the work performance of the concrete can be ensured; meanwhile, the early stage intensity and the later stage intensity of the concrete can be obviously improved; the activity index of the concrete is improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and more specifically relates to an admixture prepared by using gypsum to excite steel slag and mineral powder and high-performance concrete prepared by using the admixture. Background technique [0002] In recent years, nearly 3 billion cubic meters of concrete has been used in infrastructure construction and national key project construction in my country every year, which has played an important role in national economic growth and social progress. But at the same time, the rapid development of the cement concrete industry consumes a lot of resources and energy, and emits a lot of greenhouse gases, causing serious pollution to the environment. The cement required for the concrete produced in my country needs to burn nearly 180 million tons of standard coal, and the directly produced CO 2 Nearly 900 million tons, accounting for about the world's CO 2 10% of emissions. [0003] At ...

AI Technical Summary

Problems solved by technology

However, the activation effect and utilization rate of steel slag still need to be further improved

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