Method for preparing pavement base material by stabilizing iron tailings by novel soil stabilizer

Abstract

The invention discloses a method for preparing a pavement base material by stabilizing iron tailings by a novel soil stabilizer. The preparation method of the novel soil stabilizer comprises the following steps: diluting a TerranZyme bio-enzyme soil stabilizer with water by 10-100 times, adding solid CaCl2 with mass being 5%-10% that of diluting liquid and acidified water glass with mass being 5%-10% that of the diluting liquid, heating to 30-50 DEG C by microwaves, reacting for 20-60 minutes, and performing mixed modification to obtain the novel soil stabilizer. The novel soil stabilizer can be used for stabilizing the iron tailings to prepare the pavement base material. The method for preparing the pavement base material comprises the following steps: uniformly mixing cement, gravel and the iron tailings with the novel soil stabilizer according to a mass ratio of 5: 30: 68: 2 to obtain an inorganic mixture, adding 1.5kg / m<3> of polypropylene fibers, and uniformly mixing to obtain the pavement base material. All technical indexes of the pavement base material meet the national standard requirements, the utilization rate of the iron tailings is high, the environmental problem caused by piling of a large quantity of the iron tailings and mining of pavement gravel materials is solved, and economic benefits are obtained.

Description

technical field

[0001] The invention relates to the utilization of iron tailings and road construction, in particular to a method for preparing pavement base materials by stabilizing iron tailings with a novel soil curing agent. Background technique

[0002] Over the past 30 years, my country has made great achievements in the field of economic construction, but it has been accompanied by a large amount of consumption of various resources, solid waste, and a large amount of waste water and waste gas emissions. The environment poses a huge threat. Taking iron tailings as an example, iron tailings refers to the solid waste left after the iron ore concentrator crushes and grinds the raw iron ore under a specific process, and then selects the valuable metal iron element. Concentrates correspond. According to the report of "China Environmental Statistical Yearbook - 2011", my country's iron ore mining and dressing industry produced a total of 319.6887 million tons of industrial ...