Powdered Soil Consolidation Agent for Brittle Earth Materials
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Solution Overview
Problem
Conventional methods for soil consolidation, such as mixing with cement or lime, are inadequate for complex soil layers contaminated with organic materials, resulting in brittle solidified soil and limited load-bearing capacity, and existing alternatives like synthetic latex and cellulose-based agents are not environmentally neutral or safe for transport.
Innovation Solution
A powdered soil consolidation agent comprising cellulose ether, alkali metal hydroxide, calcium chloride, synthetic latex, amorphous pyrogenic silicon dioxide, and optional additives, which can be dissolved in water to create a liquid agent, improving the strength, flexibility, and water resistance of earth building materials while reducing sensitivity to organic components and environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If cement or lime is mixed with soil to consolidate it, then the load-bearing capacity is improved, but the solidified soil becomes very brittle and the setting behavior is severely impaired by organic contamination
Solution Approach 1:
The invention changes the chemical composition parameters of the consolidation agent by using cellulose ether instead of traditional cement or lime. This parameter change allows the agent to bind soil particles together while maintaining flexibility and not being severely impaired by organic contamination, thus resolving the contradiction between strength improvement and compositional stability.
Solution Approach 2:
The invention creates a composite consolidation agent combining cellulose ether, synthetic latex, and calcium chloride. This composite material provides both the binding strength needed for load-bearing capacity and the flexibility to avoid brittleness, while the specific composition prevents severe impairment by organic contamination.
2Strength
If conventional consolidation agents like synthetic latex and cellulose are used, then the soil consolidation is improved, but the agents are not environmentally neutral or safe for transport
Solution Approach 1:
The invention changes the chemical composition parameters by selecting cellulose ether, synthetic latex, and calcium chloride as components. These specific parameters are chosen because they provide effective soil consolidation while being environmentally neutral and safe for transport, thus resolving the contradiction between consolidation effectiveness and environmental/transport safety.
3Strength
If complex soil layers contaminated with organic material are treated with cement, then the soil strengthening is achieved, but the organic material severely impairs the setting behavior
Solution Approach 1:
The invention uses cellulose ether as an intermediary binding agent between soil particles. This intermediary material provides the binding strength needed for soil strengthening while being resistant to interference from organic contamination, thus maintaining reliable setting behavior even in complex soil layers.
Solution Approach 2:
The invention changes the chemical parameters of the consolidation agent to cellulose ether-based composition, which fundamentally alters how the agent interacts with soil and organic materials. This parameter change enables the agent to bind soil particles effectively while ignoring the presence of organic contamination, thus resolving the contradiction between strengthening and setting behavior reliability.
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 agent enhances the strength and flexibility of earth building materials, reduces water absorption and freeze-thaw damage, and improves processability, enabling the use of unsuitable soils in road construction, renovation, and drainage applications while being environmentally neutral and safe for transport.
Implementation Method 1
The agent according to the invention is mixed with earth building materials together with a binder and applied. This gives earth building materials greater strength, increases their flexibility
Implementation Method 2
reduces their ability to absorb water
Implementation Method 3
amorphous pyrogenic silicon dioxide with an average particle size in the range of 1 - 100 nm
Implementation Method 4
The agent according to the invention is mixed with earth building materials together with a binder and applied. This gives earth building materials greater strength
Data Source
AI summary
The powder has the following composition, the quantities all being expressed as percentages by weight. Cellulose ether 1-5, alkali hydroxide 0.1-1, calcium chloride 5-25, synthetic latex 39-89, amorphous pyrogenic silicon dioxide (i.e. fumed silica) 5-15 with a mean particle size in the range 1-100 nm and optional, conventional additives 0-5. The sum of all components is given by 100 wt% : The cellulose ether is methylene cellulose ether, the alkali hydroxide is sodium hydroxide and the synthetic latex is a polypropylene styrene butadiene styrene block copolymer. The mean particle size of the amorphous pyrogenic silicon dioxide lies in the range 10-20 nm. 2-4 parts by weight of the powder are added to water, to make a liquid medium used for ground reinforcement.