Solid-waste-based alkali-activated cementing road building material, preparation method and road building method

Abstract

The invention discloses a solid-waste-based alkali-activated cementing road building material, a preparation method and a road building method. The road building material comprises 45-68 parts of slag; 23 parts of fly ash; 382 parts of an original road clay-bound macadam material; and 40-55 parts of water glass. The preparation method comprises the following steps: uniformly mixing sodium silicate, sodium hydroxide and water to prepare a water glass exciting agent with the water content of 75% and the modulus of 1.5; 23 parts of fly ash, 45 parts of slag, 382 parts of an original road clay-bound macadam material and 55 parts of the water glass exciting agent are sequentially put into a stirring machine to be uniformly stirred, and the road building material is obtained. The road building method comprises the following steps: uniformly paving the fly ash and the slag on an original road surface by adopting a powder paver; milling the original soil hardened pavement by adopting a cold regeneration machine; injecting an exciting agent, and fully mixing the exciting agent with the solid mixed material; adopting a road roller and a road grader for repeatedly rolling and scraping the road surface; the material and the preparation method are low in manufacturing cost and good in environmental protection performance; the method is simple in process and high in road building efficiency.

Description

technical field [0001] The invention belongs to the field of mine transportation, and in particular relates to a solid waste alkali-activated gelling road construction material, a preparation method and a road construction method. Background technique [0002] Due to the limitation of geological conditions in open-pit mines, mine roads are mostly temporary non-hardened roads, which are easy to be damaged and generate dust; in the rainy season or excessive watering, the roads are often muddy, which can easily cause vehicles to slip and bring serious traffic safety hazards . In order to ensure the safety of transportation, how to improve the quality of road construction in open-pit mines has become an urgent problem to be solved. [0003] At present, road construction methods in open-pit mines mostly use road graders to level the road, and then use road rollers to compact the road surface. The entire construction process is too simple, and the quality of the road after formin...

AI Technical Summary

Problems solved by technology

[0003] At present, road construction methods in open-pit mines mostly use road graders to level the road, and then use road rollers to compact the road surface. The entire construction process is too simple, and the quality of the road after forming is low. There are usually a series of problems as follows: low strength of the road surface, easy damage, Severe road dust, high maintenance costs, high wear on truck tires, low vehicle operating speed, high failure rate, and high production costs

This method has high requirements on raw materials and relies heavily on red clay, which is a scarce resource and its development has been restricted at present, so it is not suitable for large-scale promotion; in addition, the strength of soil slurry roads ranges from 3 to 13.8 MPa, which is not feasible. Meet the requirements for long-term use of heavy-duty roads in open-pit mines

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