Wear-resisting concrete doped with nickel slags

Abstract

The invention provides wear-resisting concrete doped with nickel slags. The wear-resisting concrete comprises the following components by weight: 270-420g of cement, 20-50g of nickel slag powder, 35-75g of coal ash, 150-190g of water, 250-500g of nickel slag fine aggregates, 210-440g of nickel slag coarse aggregates, 320-500g of sand, 740-1176g of stone and 1.8-9g of water reducing agents. Compared with common concrete, the concrete has good wear-resisting performance, the work performance of the concrete is good, and the anti-fracture strength and the compressive strength are high. Additionally, the nickel slags serving as the coarse and fine aggregates replace a part of natural gravels, the quantity of the natural gravels used for the concrete is reduced, the production cost is reduced, and therefore, the utilization rate of the nickel slags is improved and the energy and resources are saved. The concrete can be used for floors and road surfaces in building projects and can be also used for roads, road engineering and projects with a requirement for wear resistance, and accordingly the use range of the nickel slags is widened.

Description

technical field [0001] The invention belongs to the field of concrete materials, and more specifically relates to a wear-resistant concrete mixed with nickel slag. Background technique [0002] Nickel slag is an industrial solid waste discharged during the smelting of nickel-iron alloy. Nickel-iron alloy is mainly used to produce stainless steel, so nickel slag is also called stainless steel slag or nickel-iron slag. Due to the continuous and substantial increase in the demand for stainless steel in my country in recent years, a large amount of solid waste residues have also been produced. However, these waste residues have not been fully utilized. A large number of open-air piles around the smelter not only takes up valuable land resources, Moreover, it pollutes the surrounding environment, so the resource utilization of nickel slag becomes an urgent problem. [0003] In the process of smelting nickel-iron alloy, due to the difference in smelting process, the discharged was...

AI Technical Summary

Problems solved by technology

[0004] Cement concrete pavement has the advantages of high rigidity, high strength, no rutting, good stability, and low maintenance costs. It has been widely used in road construction in my country in recent years. Insufficient attention has been paid to durability design, especially the current highway pavement cement concrete mix ratio design specification does not have specific requirements for the wear resistance of pavement cement concrete, which directly leads to insufficient attention to the wear resistance of cement concrete pavement, and wear resistance is a common durability problem in pavement engineering in all regions