Finely ground high-titanium slag and fly ash composite high-performance concrete

Abstract

The invention discloses concrete, which is prepared by mixing cement, sand, stone and water which are mixed in common concrete, as well as finely ground high-titanium slag, fly ash, high-efficiency water reducing agent and hardening accelerator. The prepared concrete has high workability, durability, volume stability and excellent physical and mechanical performance. The concrete is activated by using mechanical (physical) activation and chemical activation and is used as excellent active additive to replace 10 to 25 percent of cement equally, so the workability and durability of the concrete are improved obviously without influencing the later strength of the concrete. The concrete has the advantages of improving the comprehensive utilization rate of high-titanium slag and fly ash, providing a high-performance concrete convenient in construction and high in quality, reducing construction cost and exploitation of natural sand and stone, and protecting environment.

Description

technical field [0001] The present invention relates to solid waste utilization, concrete and a preparation method thereof. technical background [0002] High-performance concrete is a new concept concrete proposed in the late 1980s and early 1990s. It takes durability as the primary design indicator, which is different from traditional concrete. It has high durability, high workability, high strength and high volume stability. properties and many other excellent properties. In recent years, with the development of urban construction, many building structures have put forward higher requirements for the performance of concrete, so the development of high-performance concrete is an inevitable trend. [0003] Panzhihua is located in the Panxi Great Rift Valley and is rich in mineral resources. The annual discharge of solid waste such as blast furnace slag and fly ash reaches millions of tons. In most parts of my country, blast furnace slag can be used in cement and concrete,...

AI Technical Summary

Problems solved by technology

In most areas of our country, blast furnace slag can be used in cement and concrete, but Panzhihua blast furnace slag is high titanium slag, which contains 20-24% TiO 2 , the traditional view is that even if the high-titanium slag is quenched, it will still produce a large amount of perovskite (CaO·TiO 2 ), resulting in less CaO entering the vitreous, higher polymerization of silicon-oxygen tetrahedrons in the vitreous, and lower hydraulic activity

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