Mixed mineral-based grouting material for reinforcing coastal port foundations

Abstract

The invention discloses a mixed mineral-based grouting material for reinforcing coastal port foundations, and belongs to the technical field of engineering materials. The mixed mineral-based groutingmaterial is prepared from expansive soil, water and a special structuring agent at a weight ratio of 2: (4-5): (3-4); according to a preparation method, an expansive soil slurry is prepared from expansive soil and water at a weight ratio of (4-5): (2-3), and a structuring agent slurry is prepared from the special structuring agent and water at a weight ratio of (1-2): 1. According to the invention, the special structuring agent is added on the basis of expansive soil to replace traditional on-site clay, so that reinforcing and improving of poor soil are realized, stable control on the water absorption performance and the expansibility of the slurry is realized, advantages of excellent underwater stability, dilution resistance, significant impermeability, controllable strength, controllablecoagulation time, controllable fluidity and the like are achieved, and in addition, good durability in the seawater environment is achieved; so that the performance of slurry reinforced solid is morestable and controllable.

Description

Technical field [0001] The invention relates to a mixed mineral-based grouting material for strengthening the foundations of coastal ports, and belongs to the technical field of engineering materials. Background technique [0002] With the rapid development of social economy, my country's requirements for engineering construction have become increasingly strict. At the same time, my country has a vast territory, numerous mountains and rivers, and complex and diverse site types. Poor geological conditions have caused great resistance to the development of engineering construction, including building foundation engineering, dam engineering, and roadbed engineering, especially the undisturbed foundations of near-shore bridge engineering and near-shore port engineering are often bad foundations and often need to be carried out first. Foundation treatment to meet the suitability and durability of the structure. [0003] There are many methods of foundation treatment. Grouting reinforce...

AI Technical Summary

Problems solved by technology

However, reinforcement grout materials prepared for the special site conditions of near-shore bridge projects and near-shore port projects are not common

The soil in seawater bears the long-term erosion and infiltration of seawater, and various minerals in seawater will affect the stability and durability of traditional reinforcement grout, making the reinforcement effect unsatisfactory

In addition, there are a variety of harmful substances such as chloride salts and sulfates in seawater or groundwater. The chloride ions in the water mainly cause corrosion to the pile foundation by destroying the passivation film, anode depolarization and conductivity, thereby reducing the pile foundation. strength and durability