Polymer Grouting Anchoring Method for Soil Stabilization
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Solution Overview
Problem
Conventional anchoring materials, such as cement mortar, face challenges including complex processing, high costs, limited adaptability to varying geological conditions, and insufficient mechanical performance, particularly in complex rock and soil masses, and are not suitable for collapsible loess or soils that expand with water.
Innovation Solution
A non-water reacted two-component expansive polymer grouting method is introduced, involving a rapid chemical reaction to seal and fill holes with a polymer material that expands and solidifies, providing high strength, low permeability, and durability, while being adaptable to diverse geological conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cement mortar is used as anchoring material, then it is widely utilized and familiar in engineering practices, but it has complex processing, high costs, inconvenient transportation and storage, and installation needing mechanical agitation
Solution Approach 1:
The patent changes the chemical composition parameters of the anchoring material from conventional cement mortar to a two-component polymer system (resin and hardener). This parameter change eliminates the need for water-based processing, mechanical agitation, and complex curing procedures, while providing simpler mixing, faster setting, and no shrinkage upon solidification.
Solution Approach 2:
The patent employs a disposable two-component polymer grout system that is mixed just before use and sets rapidly without requiring storage of pre-mixed materials. This eliminates the need for complex storage facilities and mechanical agitation equipment needed for conventional cement mortar, reducing both processing complexity and infrastructure requirements.
2Reliability
If conventional cement anchoring material is used, then it provides anchoring support, but additives accelerate moisture and metamorphism, shortening storage periods and lowering performance
Solution Approach 1:
The patent extracts and eliminates water from the anchoring material system, using a two-component polymer system instead of water-based cement mortar. This removal of water prevents moisture-related degradation, deliquescence, and metamorphism of additives, thereby extending storage periods indefinitely while maintaining anchoring performance.
Solution Approach 2:
The patent uses a composite two-component polymer system (resin + hardener) that combines the benefits of organic polymers with cross-linking chemistry. This composite material provides high strength, long-term stability, and resistance to environmental degradation without the storage limitations of conventional cement-based materials containing deliquescent additives.
3Ease of manufacture
If conventional cement anchoring material with fixed composition is used, then it is simple to manufacture, but adjustments of gelation time and strength at scene freely is difficult
Solution Approach 1:
The patent introduces dynamic adjustability to the anchoring material system by allowing variable mixing ratios of the two polymer components. This enables on-site adjustment of gelation time and final strength to match different geological conditions and engineering requirements, while maintaining simple manufacturing through separate component production and storage.
4Reliability
If resin bonded anchor is used, then it provides anchoring support, but the resin material is poisonous, flammable, easy to aging, and high in price
Solution Approach 1:
The patent uses a composite two-component polymer system where the combination of resin and hardener creates a cross-linked network that improves resistance to aging and reduces toxicity compared to single-component resins. The cross-linking structure enhances durability while the specific chemical composition selected minimizes harmful properties.
Solution Approach 2:
The patent modifies the chemical parameters of the polymer system by selecting specific resin and hardener combinations that reduce toxicity and flammability while maintaining anchoring performance. The cross-linking density and molecular structure are optimized to resist aging and environmental degradation without the severe harmful effects of conventional resins.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The polymer grouting technology offers high strength, rapid construction, reduced maintenance, and adaptability to complex conditions, doubling anchoring force compared to cement, with significant cost savings and improved durability, making it suitable for emergency repairs and diverse geological settings.
Implementation Method 1
a non-water reacted two-component expansive polymer grouting material is introduced, involving a rapid chemical reaction to seal and fill holes with a polymer material that expands and solidifies
Implementation Method 2
a non-water reacted two-component expansive polymer grouting material is introduced, involving a rapid chemical reaction to seal and fill holes with a polymer material that expands and solidifies
Data Source
AI summary
A grouting method for anchoring with polymer is provided, wherein the method includes steps of: a) rod body processing; b) tying up a geotextile bag and grouting tubes on the anchoring rod body; c) hole drilling; d) polymer grouting: I. hole sealing grouting; II. anchoring grouting. The present invention has advantages of a sufficient adaptability, non-water reaction, convenient and fast construction, being economic, a high strength and a high durability. An expansive polymer material has an obvious compacting effect on soil, and is capable of increasing a friction force between a grout and a base; the water-proofing polymer material is an impermeable material for a steel rod body, and is of benefit to anti-corrosion and durability of the rod body; a solidifying time of the polymer material is short and no maintenance is needed in such a manner that construction periods are shortened.