Method for rapidly improving bearing capacity of phyllite soil roadbed surface based on prediction mathematical model

Abstract

The invention discloses a method for quickly improving the bearing capacity of a phyllite soil roadbed surface based on a prediction mathematical model. According to the method, phyllite soil is usedas a roadbed raw material, special soil red clay is used as a cementing agent, and mixed soil of two kinds of soil is used as roadbed filler, wherein the parameters required to be controlled are the blending ratio lambda and the compaction degree K of the red clay; the invention provides a mathematic model of roadbed bearing capacity along with lambda and K. The mathematic model can be used for calculating the lowest lambda of red clay under specific w and K, wherein the lowest lambda meets bearing capacity requirements; and K value minimum requirements under the conditions of lambda and watercontent w are met. The red clay provided by the invention can quickly improve the bearing capacity of the phyllite subgrade surface, the subgrade surface can meet the bearing capacity requirement after being compacted to a calculated value K, and the maintenance age is not needed. Microscopically, the red clay changes the grain composition of phyllite soil, iron cementation is generated after compaction, the reason is the rapid improvement of the bearing capacity, the damage of a loading truck to the roadbed surface is reduced, the lorry can be continuously compacted, and the bearing capacityis continuously increased.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows for improved stability or load-bearability during use on roads while maintaining their ability to absorb water from rainwater runoff. By adding certain substances like rutile (iron) sandstone into these mixtures, they create strong structures that help them hold more weight than usual. These techniques also allow for quicker installation times compared to traditional methods such as concrete layers due to less damaging impacts upon the surrounding area. Additionally, reducing costs through greenhouse gas emissions reduces environmental concerns associated with conventional methodologies.

Problems solved by technology

This patents describes different ways to enhance the mechanical property of hydraulic materials such as tungsten carbide cast iron and grey brass. However, these techniques have limitations including slow hardness development, difficulty in achieving stable green state, limited durability, and difficulties in maintaining consistence between layers within the original composite material.

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