Road water stabilizing material and preparation method thereof

Abstract

The invention discloses a road water stabilizing material which is prepared from steel slag, ardealite, gravel and cement and is divided into a medium-grained soil water stabilizing material and a fine-grained soil water stabilizing material, the particle size of the fine-grained soil water stabilizing material does not exceed 4.65 mm, and the medium-grained soil water stabilizing material contains the gravel and the steel slag with the particle size ranging from 4.65 mm to 20.0 mm. The road water stabilizing material prepared from the steel slag, the phosphogypsum, the water and the gravel has the advantages of simple manufacturing process, short maintenance period, high early strength, wide material source, low price and the like, and has better economic practicability. The phosphogypsum and the steel slag can be co-processed, the phosphogypsum accounts for 6-9% of the total weight of the dry material of the water stabilizing material, the steel slag accounts for 50% of the total weight of the dry material of the water stabilizing material, and the technology can realize large-amount utilization of the two solid wastes. The phosphogypsum is moderate in mixing amount, and is not greatly adhered to the surface of the aggregate to hinder the adhesion of C-S-H and the aggregate. The steel slag, the gravel and the ardealite are separately sealed, so that the phosphogypsum adhered to the surface of the gravel can be effectively reduced, and the overall strength development of the water stabilizing material is facilitated.

Description

technical field

[0001] The invention relates to a road water stabilizer and a preparation method thereof, belonging to the technical field of road water stabilizers. Background technique

[0002] Steel slag is a kind of industrial solid waste produced in the steelmaking process of iron and steel enterprises. The annual output of steel slag in my country is about 100 million tons, and the cumulative stockpiles have reached 1.28 billion tons, and the utilization rate is only 20%. Phosphogypsum is a by-product of wet-process phosphoric acid production. The storage capacity in my country has exceeded 500 million tons, and there is a new storage capacity of 50 million tons every year. The storage pressure is high.

[0003] Patent CN 105948639A uses cement, steel slag sand, and fine-grained soil as raw materials, aiming to solve the problem of shrinkage and cracking of cement-stabilized fine-grained soil as the pavement base. But this invention needs to be calcined at high temper...

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