Related Experiment Video
Updated: Jul 16, 2025
05:38
Production and Analysis of Sporosarcina pasteurii Biocement Bricks Using Custom 3D-Printed Molds for Unconfined Compression Tests
Published on: March 7, 2025
325
Sustainable colonization of Mars using shape optimized structures and in situ concrete
Omid Karimzade Soureshjani1, Ali Massumi2, Gholamreza Nouri1
1Department of Civil Engineering, Faculty of Engineering, Kharazmi University, Tehran, Iran.
Scientific Reports
|September 22, 2023
Summary
Reducing Martian colonization costs is key. New shape-optimized structures using in situ resources minimize material, energy, and construction expenses by over 50%, paving the way for affordable Martian habitats.
Area of Science:
- Structural Engineering
- Aerospace Engineering
- Materials Science
Background:
- Martian colonization faces significant cost barriers, primarily due to material import and energy-intensive construction methods.
- Current proposals for Martian habitats, such as inflatable or underground structures, are deemed prohibitively expensive.
- Utilizing in situ resources and minimizing energy consumption are critical for sustainable off-world construction.
Purpose of the Study:
- To propose novel, cost-effective structural designs for Martian habitats.
- To minimize material and energy requirements for construction on Mars.
- To enable the use of in situ concrete for Martian construction.
Main Methods:
- Development of three types of simple, perforated, and algorithmically shape-optimized structures.
- Focus on maximizing compressive stress and minimizing tensile stress for material efficiency.
- Evaluation of structural performance against Martian environmental criteria and limitations.
- 3D printing of a 1:200 scale model of the optimal design for geometric assessment.
Main Results:
- Proposed structures significantly reduce material and energy needs for construction.
- Demonstrated potential for over 50% reduction in construction costs compared to previous studies.
- Designs are optimized for in situ concrete utilization and enhanced structural integrity.
- Identified structural forms that maximize compressive strength, suitable for Martian conditions.
Conclusions:
- Shape-optimized structures offer a viable solution for affordable Martian construction.
- The proposed designs represent a significant advancement in sustainable off-world building.
- Minimizing construction energy and material costs is achievable using in situ resources and innovative engineering.
Related Concept Videos
01:26Design Example: Sustainability in Concrete Building
183
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
183
01:20Concrete
374
Concrete is a vital construction material extensively used worldwide, primarily valued for its strength, durability, and versatility, which it provides for various structural designs. Concrete generally comprises ingredients like Portland cement, coarse gravel, fine sand, and water. Concrete can be mixed by simple hand methods or industrially at computer-controlled plants. The mixture consists of aggregates and a paste made from water and Portland cement. This paste coats the aggregates and,...
374
01:17Placing Concrete
125
The concrete is placed as close as possible to its final position to avoid segregation. The placed concrete is then fully compacted to expel the entrapped air, and the next layer of concrete is laid while the underlying layer is still in the plastic state. The rate at which concrete is placed and compacted is kept equal.
While placing concrete, care is taken to ensure that the concrete is laid in uniform layers, and hand shoveling and moving concrete using poker vibrators is avoided. Also,...
While placing concrete, care is taken to ensure that the concrete is laid in uniform layers, and hand shoveling and moving concrete using poker vibrators is avoided. Also,...
125
01:27Shrinkage in Concrete
123
Shrinkage in concrete is primarily due to water loss from evaporation, hydration of cement, or carbonation, leading to a reduction in volume. The volumetric contraction results in volumetric strain in concrete. However, in practice, shrinkage is measured as linear strain, which is one-third of the volumetric strain.
When concrete is still in its plastic state, it can undergo a decrease in volume by about 1% of its absolute volume. This decrease is known as plastic shrinkage. It arises either...
When concrete is still in its plastic state, it can undergo a decrease in volume by about 1% of its absolute volume. This decrease is known as plastic shrinkage. It arises either...
123
01:14Design Example: Managing Concrete Workability
95
This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
95
01:25Workability of Concrete
118
The workability of concrete is a crucial property that affects its handling, placing, and finishing during construction. It describes the ease with which concrete can be mixed, placed, compacted, and finished. Workability is primarily concerned with the concrete's movement and its ability to resist internal friction and external resistance from molds and reinforcements during the application process.
Concrete's workability is determined by its resistance to internal forces that arise...
Concrete's workability is determined by its resistance to internal forces that arise...
118