Rapid-hardening early-strengthening wearable concrete material for road repair and its preparation method

Abstract

The invention provides a rapid-hardening early-strengthening wearable concrete material for road repair and its preparation, wherein the material mainly comprises the following ingredients, steel slag powdered ore 40-80kg / m3, metakaolin 320-560kg / m3, alkaline exciting agent solution 200-300kg / m3, steel slag fine aggregates 630-1800kg / m3, steel fiber 62-156kg / m3, and polypropylene fiber 1kg / m3.

Description

technical field [0001] The invention belongs to the category of inorganic non-metallic materials, and in particular relates to a concrete road repair material and a preparation method thereof. Background technique [0002] In recent years, with the increase of the service life of the old cement concrete pavement, most of the cement concrete pavement built in the early stage is close to the service life; at the same time, the cement concrete pavement built recently cannot meet the requirements due to the rapid growth of traffic volume and vehicle speed on the road. Therefore, the research on cement concrete pavement repair technology is particularly important. [0003] The current repair materials have the following defects: ①The interface between old and new concrete is weak, and it is easy to cause interface defects to crack the concrete; ②Poor wear resistance; ③The shrinkage is large, which easily causes the old and new concrete to pull apart; ④The curing period is long ,...

AI Technical Summary

Problems solved by technology

[0003] The current repair materials have the following defects: ①The interface between old and new concrete is weak, and it is easy to cause interface defects to crack the concrete; ②Poor wear resistance; ③The shrinkage is large, which easily causes the old and new concrete to pull apart; ④The curing period is long , which is not conducive to the opening of traffic; ⑤Although the performance of polymer repair materials is good, the cost is high

[0004] Steel slag is a kind of industrial waste with low utilization rate. It is piled up in large quantities, occupying farmland, and causing great pollution to the environment.