Engineered Lunar Regolith Reinforcement for Stable Surface Infrastructure

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Solution Overview

Problem

Lunar regolith lacks cohesion and adhesion, making it unstable and susceptible to erosion, limiting its effectiveness as a construction material for infrastructure on the Moon.

Innovation Solution

Enhance lunar regolith by reorganizing particle size distribution, incorporating polymer additives, and using geogrids for mechanical stabilization, along with vibration compaction to improve cohesion and shear strength, and create a durable surface crust through heat activation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If lunar regolith is used as construction material, then availability of materials is improved, but structural stability deteriorates due to lack of cohesion and adhesion

Engineering Contradiction:

Improvematerial availabilityVSAvoidstructural stability

Core Design Contradiction:

Quantity of substanceVSStability of the object's composition

Solution Approach 1:

The patent combines lunar regolith with polymer additives and geogrids to create a composite construction material. The polymer additives provide adhesion and cohesion to the regolith particles, while geogrids provide mechanical reinforcement, resulting in a stable structural composite that maintains the availability of lunar materials while achieving structural stability.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent modifies the physical and chemical parameters of lunar regolith by adding polymers and undergoing vibration compaction. These parameter changes alter the material's cohesion, adhesion, and mechanical properties, transforming it from an unstable loose material to a stable engineered construction material.

Inventive Principle:

Principle #35Parameter changes

2Strength

If vibration compaction is applied to regolith, then shear strength and bearing capacity are improved, but energy consumption increases

Engineering Contradiction:

Improveshear strengthVSAvoidenergy consumption

Core Design Contradiction:

StrengthVSUse of energy by stationary object

Solution Approach 1:

The patent applies vibration compaction selectively and partially to achieve the required shear strength and bearing capacity. By using geogrids and polymer additives to provide additional stabilization, the patent reduces the extent to which vibration compaction is needed, thereby lowering energy consumption while maintaining structural strength.

Inventive Principle:

Principle #16Partial or excessive action

3Object-affected harmful factors

If confinement strategies are implemented to prevent erosion, then resistance to harmful factors is improved, but device complexity increases

Engineering Contradiction:

Improveerosion resistanceVSAvoidconfinement structure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent uses polymer additives that form a flexible binding matrix and geogrids that provide a flexible reinforcement network. These flexible structures prevent erosion and provide confinement without requiring rigid complex structures, maintaining erosion resistance while minimizing device complexity through the use of flexible, integrated materials.

Inventive Principle:

Principle #30Flexible shells and thin films

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 engineered regolith achieves enhanced structural integrity and resistance to erosion, supporting durable lunar infrastructure and sustainable human presence on the Moon.

Implementation Method 1

Vibrational compaction emerges as a foundational method which significantly enhances the shear strength and bearing capacity essential for infrastructure development

Methodology Applied

Scientific EffectVibration: Vibration

Implementation Method 2

Vibrational compaction emerges as a foundational method which significantly enhances the shear strength and bearing capacity

Methodology Applied

Scientific EffectCompaction: Compression

Implementation Method 3

Upon application, targeted heat activation bonds the polymer palliatives to the regolith particles, primarily at the surface, creating a durable crust

Methodology Applied

Scientific EffectHeat activation: Heating

Data Source

PatentUS20260035108A1Materials, Methods, and Apparatus for Lunar Engineered Regolith Infrastructure

Publication Date: 2026.02.05 SPACEFACTORY INC

AI summary

This invention details a comprehensive system for enhancing lunar regolith, enabling its use in constructing a range of structures and infrastructures on the lunar surface. This ‘engineered regolith’ significantly outperforms bulk, or naturally occurring lunar regolith, in terms of cohesion, frictional shear strength, and bearing capacity. Engineered regolith builds on certain advantageous properties of bulk regolith—namely its ability to be compacted to perform better—through targeted strategies to confine the regolith and prevent outwards shear failure. These strategies include beneficiation, fiber reinforcement, and polymeric stabilization in various combinations and concentrations to enable the construction of diverse structures, from habitat foundations to expansive infrastructures. In offering a sustainable and low-impact approach to lunar construction, this invention leverages in-situ resources to minimize the dependency on Earth-sourced materials. Moreover, its methodologies and benefits are extendable to Mars and beyond, underscoring the invention's position as a versatile construction technology with far reaching implications.