report:soa

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision		 Previous revision
report:soa [2026/05/21 11:47] – [2.4 Comparative Analysis] team4report:soa [2026/06/03 16:24] (current) – [2.3 Companies] team4
Line 10: Line 10:
 This chapter establishes the technical and scientific foundation for the Maris Habitats project by situating it within the broader context of artificial reef design and underwater environmental monitoring. Traditional artificial reefs are usually passive structures that provide physical habitat support, while marine monitoring systems are often treated as separate technical equipment. This chapter establishes the technical and scientific foundation for the Maris Habitats project by situating it within the broader context of artificial reef design and underwater environmental monitoring. Traditional artificial reefs are usually passive structures that provide physical habitat support, while marine monitoring systems are often treated as separate technical equipment.
  
-Maris Habitats aims to connect these two areas by combining modular reef infrastructure with a removable smartblock. Instead of focusing on real-time data transmission, the system is designed for long-term local data logging. This approach reduces technical complexity and makes the concept more realistic for a low-power underwater system.+Maris Habitats aims to connect these two areas by combining modular reef infrastructure with a removable smartlogger. Instead of focusing on real-time data transmission, the system is designed for long-term local data logging. This approach reduces technical complexity and makes the concept more realistic for a low-power underwater system.
  
 The chapter reviews artificial reef concepts, existing companies, material options, sensor placement challenges, and biological and geographical factors. This background helps justify the project direction: a modular reef block system supported by environmental data collection rather than a fully live underwater IoT platform. The chapter reviews artificial reef concepts, existing companies, material options, sensor placement challenges, and biological and geographical factors. This background helps justify the project direction: a modular reef block system supported by environmental data collection rather than a fully live underwater IoT platform.
Line 91: Line 91:
 This section reviews selected companies related to artificial reef systems and marine habitat infrastructure. The aim is to understand how existing companies approach reef structure, material choice, modularity, and ecological design. This section reviews selected companies related to artificial reef systems and marine habitat infrastructure. The aim is to understand how existing companies approach reef structure, material choice, modularity, and ecological design.
  
-The review also considers whether these solutions include monitoring or environmental data collection as a core feature. This helps identify the position of Maris Habitats as a modular reef infrastructure system with a removable smartblock and long-term local data logging.+The review also considers whether these solutions include monitoring or environmental data collection as a core feature. This helps identify the position of Maris Habitats as a modular reef infrastructure system with a removable smartlogger and long-term local data logging.
  
 **ECOncrete** **ECOncrete**
Line 141: Line 141:
 As shown in Figure {{ref>fig:IntelliReefs}}, IntelliReefs uses modular reef units that can be arranged to create complex underwater habitats. These structures are relevant to Maris Habitats because both concepts use modular reef elements and aim to create underwater infrastructure that can interact with the surrounding marine environment. As shown in Figure {{ref>fig:IntelliReefs}}, IntelliReefs uses modular reef units that can be arranged to create complex underwater habitats. These structures are relevant to Maris Habitats because both concepts use modular reef elements and aim to create underwater infrastructure that can interact with the surrounding marine environment.
  
-However, IntelliReefs differs from Maris Habitats in its main focus. Based on the available information, IntelliReefs mainly focuses on Oceanite-based artificial reef structures and marine restoration solutions. There is no clear indication that a removable smartblock or long-term local environmental data logging is included as a core product feature. Therefore, IntelliReefs is a useful benchmark for alternative reef materials and ecological reef design, while Maris Habitats aims to combine modular reef blocks with removable sensor-based monitoring for long-term environmental observation.+However, IntelliReefs differs from Maris Habitats in its main focus. Based on the available information, IntelliReefs mainly focuses on Oceanite-based artificial reef structures and marine restoration solutions. There is no clear indication that a removable smartlogger or long-term local environmental data logging is included as a core product feature. Therefore, IntelliReefs is a useful benchmark for alternative reef materials and ecological reef design, while Maris Habitats aims to combine modular reef blocks with removable sensor-based monitoring for long-term environmental observation.
  
  
Line 161: Line 161:
 rrreefs is relevant to Maris Habitats because both concepts use modular reef structures and aim to create underwater infrastructure that can interact with the surrounding marine environment. The company is also relevant as a business benchmark because it operates as an impact-driven reef restoration start-up and works with local partners to implement reef projects in different countries. rrreefs is relevant to Maris Habitats because both concepts use modular reef structures and aim to create underwater infrastructure that can interact with the surrounding marine environment. The company is also relevant as a business benchmark because it operates as an impact-driven reef restoration start-up and works with local partners to implement reef projects in different countries.
  
-However, rrreefs differs from Maris Habitats in its main focus. rrreefs mainly focuses on coral reef regeneration through 3D-printed clay reef modules and local restoration partnerships. Based on the available product descriptions, there is no clear indication that a removable smartblock or long-term local environmental data logging is included as a core product feature. Therefore, rrreefs is a useful benchmark for modular reef design and reef restoration business models, while Maris Habitats aims to combine modular reef blocks with removable sensor-based monitoring for long-term environmental observation.+However, rrreefs differs from Maris Habitats in its main focus. rrreefs mainly focuses on coral reef regeneration through 3D-printed clay reef modules and local restoration partnerships. Based on the available product descriptions, there is no clear indication that a removable smartlogger or long-term local environmental data logging is included as a core product feature. Therefore, rrreefs is a useful benchmark for modular reef design and reef restoration business models, while Maris Habitats aims to combine modular reef blocks with removable sensor-based monitoring for long-term environmental observation.
  
 <WRAP centeralign> <WRAP centeralign>
Line 183: Line 183:
 ^ Criteria ^ ECOncrete ^ Reef Design Lab ^ IntelliReefs ^ rrreefs ^ Maris Habitats ^ ^ Criteria ^ ECOncrete ^ Reef Design Lab ^ IntelliReefs ^ rrreefs ^ Maris Habitats ^
 | Main business focus | Bio-enhancing concrete for marine and coastal infrastructure | Designed and 3D-printed reef structures | Oceanite-based artificial reef restoration | 3D-printed modular clay reef restoration | Modular reef infrastructure and environmental data | | Main business focus | Bio-enhancing concrete for marine and coastal infrastructure | Designed and 3D-printed reef structures | Oceanite-based artificial reef restoration | 3D-printed modular clay reef restoration | Modular reef infrastructure and environmental data |
-| Product type | Eco-engineered concrete infrastructure units | Modular reef modules and design services | Artificial reef modules made with Oceanite marine substrate | Interlocking 3D-printed clay reef modules | Reef blocks with a removable smart sensor box |+| Product type | Eco-engineered concrete infrastructure units | Modular reef modules and design services | Artificial reef modules made with Oceanite marine substrate | Interlocking 3D-printed clay reef modules | Reef blocks with a removable smartlogger |
 | Main application | Ports, seawalls, shoreline protection, offshore assets, and subsea cable protection | Reef restoration and marine habitat construction | Coral reef restoration and marine habitat support | Coral reef regeneration and habitat creation | Reef installation, environmental monitoring, and long-term site observation | | Main application | Ports, seawalls, shoreline protection, offshore assets, and subsea cable protection | Reef restoration and marine habitat construction | Coral reef restoration and marine habitat support | Coral reef regeneration and habitat creation | Reef installation, environmental monitoring, and long-term site observation |
 | Modularity | Moderate | High | High | High | High | | Modularity | Moderate | High | High | High | High |
Line 193: Line 193:
 | Data retrieval method | Not specified | Not specified | Not specified | Not specified | SD card / scheduled annual retrieval | | Data retrieval method | Not specified | Not specified | Not specified | Not specified | SD card / scheduled annual retrieval |
 | Service model | Project-based marine infrastructure solution | Design and project-based reef solution | Restoration project-based solution | Impact-driven reef restoration projects with local partners | Reef modules with optional monitoring and data service | | Service model | Project-based marine infrastructure solution | Design and project-based reef solution | Restoration project-based solution | Impact-driven reef restoration projects with local partners | Reef modules with optional monitoring and data service |
-| Main differentiation | Ecological concrete material and infrastructure integration | Complex modular reef design | Alternative Oceanite-based reef material | 3D-printed clay reef modules and local restoration partnerships | Removable sensor box and long-term environmental data |+| Main differentiation | Ecological concrete material and infrastructure integration | Complex modular reef design | Alternative Oceanite-based reef material | 3D-printed clay reef modules and local restoration partnerships | Removable smartlogger and long-term environmental data |
  
 </table>  </table> 
Line 203: Line 203:
 Compared with these companies, Maris Habitats is positioned as a modular reef infrastructure and environmental data solution.  Compared with these companies, Maris Habitats is positioned as a modular reef infrastructure and environmental data solution. 
 The project does not focus only on ecological design or reef structure, but also on collecting environmental data around the reef over time.  The project does not focus only on ecological design or reef structure, but also on collecting environmental data around the reef over time. 
-The main difference is the removable smart sensor box, which stores data locally and allows scheduled retrieval during annual maintenance.+The main difference is the removable smartlogger, which stores data locally and allows scheduled retrieval during annual maintenance.
 ==== 2.5 Materials ==== ==== 2.5 Materials ====
 For this project involving a marine habitat at a maximum depth of 50 m off the Portuguese coast, the materials must withstand a pressure of approximately 5 bar while fostering biological growth and protecting sensitive sensors. To ensure the highest level of efficiency and environmental compatibility, various materials used in international restoration efforts have been analyzed. For this project involving a marine habitat at a maximum depth of 50 m off the Portuguese coast, the materials must withstand a pressure of approximately 5 bar while fostering biological growth and protecting sensitive sensors. To ensure the highest level of efficiency and environmental compatibility, various materials used in international restoration efforts have been analyzed.
Line 209: Line 209:
 The selection of materials and the structural design of artificial habitats are fundamental to ensuring both environmental compatibility and long-term viability. For this project, concrete has been identified as the primary material due to its exceptional durability and its proven track record in underwater construction. Its capacity to provide structural integrity against significant environmental stressors—such as salinity, strong currents, and wave action—makes it the industry standard for creating resilient marine foundations. While the chemical properties of concrete, particularly its initial pH levels, have historically been a point of debate, recent research has shifted the focus toward a more nuanced understanding of its behavior in open marine environments [(KNOESTER2024)]. The selection of materials and the structural design of artificial habitats are fundamental to ensuring both environmental compatibility and long-term viability. For this project, concrete has been identified as the primary material due to its exceptional durability and its proven track record in underwater construction. Its capacity to provide structural integrity against significant environmental stressors—such as salinity, strong currents, and wave action—makes it the industry standard for creating resilient marine foundations. While the chemical properties of concrete, particularly its initial pH levels, have historically been a point of debate, recent research has shifted the focus toward a more nuanced understanding of its behavior in open marine environments [(KNOESTER2024)].
  
-Studies indicate that the high alkalinity of newly submerged concrete (typically between 12–14) is rapidly diluted by seawater, resulting in no significant long-term detriment to coral growth or benthic colonization [(KNOESTER2024)]. This suggests that ecological success depends less on extended curing periods or pH-neutral mixtures and more on the physical attributes of the habitat. Consequently, the following sections will detail how this project prioritizes structural complexity, substrate durability, and hydrodynamic stability [(NewHeaven2016)]. By optimizing the weight-to-complexity ratio and ensuring low water absorption, it can be guaranteed that these structures remain stationary during extreme weather events while providing the necessary niches for biodiversity to thrive [(KNOESTER2024)].+Studies indicate that the high alkalinity of newly submerged concrete (typically between 12–14) is rapidly diluted by seawater, resulting in no significant long-term detriment to coral growth or benthic colonization [(KNOESTER2024)]. This suggests that ecological success depends less on extended curing periods or pH-neutral mixtures and more on the physical attributes of the habitat. Consequently, the following sections will detail how this project prioritizes structural complexity, substrate durability, and hydrodynamic stability [(NewHeaven2018)]. By optimizing the weight-to-complexity ratio and ensuring low water absorption, it can be guaranteed that these structures remain stationary during extreme weather events while providing the necessary niches for biodiversity to thrive [(KNOESTER2024)].
  
 Based on the research and articles reviewed, the following subsection evaluates different material options—ranging from traditional foundations to innovative biocompatible substrates—from which the selection for the most suitable components will be done for this specific implementation. Based on the research and articles reviewed, the following subsection evaluates different material options—ranging from traditional foundations to innovative biocompatible substrates—from which the selection for the most suitable components will be done for this specific implementation.
 === 2.5.1. Structural Materials === === 2.5.1. Structural Materials ===
 +
 **A. Bacterial (Self-healing) High-Strength Concrete (HSC)** **A. Bacterial (Self-healing) High-Strength Concrete (HSC)**
 +
 This material incorporates bacterial spores, specifically *Bacillus sphaericus* (strain ATCC 14577), which remain dormant until a crack occurs. Water ingress activates the bacteria, which then precipitate calcium carbonate to seal the crack [(ALYAARI2026)]. This material incorporates bacterial spores, specifically *Bacillus sphaericus* (strain ATCC 14577), which remain dormant until a crack occurs. Water ingress activates the bacteria, which then precipitate calcium carbonate to seal the crack [(ALYAARI2026)].
-  * **Pros:** Achieves **96 % recovery in water tightness** within 56 days of seawater immersion [(ALYAARI2026)]. It maintains structural integrity above **100 MPa**, which is more than sufficient for the pressure at 50 m. It significantly reduces rebar corrosion by sealing entry points for chloride ions [(PRAJEESHA2026)]. +  * Pros: Achieves **96 % recovery in water tightness** within 56 days of seawater immersion [(ALYAARI2026)]. It maintains structural integrity above **100 MPa**, which is more than sufficient for the pressure at 50 m. It significantly reduces rebar corrosion by sealing entry points for chloride ions [(PRAJEESHA2026)]. 
-  * **Cons:** Higher complexity in mixing and requires specific nutrients like calcium lactate and urea [(ALYAARI2026)]. +  * Cons: Higher complexity in mixing and requires specific nutrients like calcium lactate and urea [(ALYAARI2026)]. 
-  * **Price:** Estimated at **180 €/m<sup>3</sup> – 260 €/m<sup>3</sup>**.+  * Price: Estimated at **180 €/m<sup>3</sup> – 260 €/m<sup>3</sup>**.
  
 **B. Basalt Fiber-Reinforced Polymer (BFRP)** **B. Basalt Fiber-Reinforced Polymer (BFRP)**
 +
 Basalt fibers, derived from natural volcanic rock, are used to reinforce concrete or as standalone composite laminates [(BAHAOUI2025)]. Basalt fibers, derived from natural volcanic rock, are used to reinforce concrete or as standalone composite laminates [(BAHAOUI2025)].
-  * **Pros:** **Naturally non-corrosive** and chemically stable in aggressive saline environments [(BAHAOUI2025)]. Vacuum infusion manufacturing can produce laminates with flexural strength up to **400 MPa** [(BAHAOUI2025)]. It provides a more resilient, damage-tolerant failure mode compared to the brittle collapse of traditional reinforced concrete [(BAHAOUI2025)]. +  * Pros: **Naturally non-corrosive** and chemically stable in aggressive saline environments [(BAHAOUI2025)]. Vacuum infusion manufacturing can produce laminates with flexural strength up to **400 MPa** [(BAHAOUI2025)]. It provides a more resilient, damage-tolerant failure mode compared to the brittle collapse of traditional reinforced concrete [(BAHAOUI2025)]. 
-  * **Cons:** Slightly lower peak flexural strength compared to glass fibers, although superior in long-term durability and environmental footprint [(BAHAOUI2025)]. +  * Cons: Slightly lower peak flexural strength compared to glass fibers, although superior in long-term durability and environmental footprint [(BAHAOUI2025)]. 
-  * **Price:** Estimated at **160 €/m<sup>3</sup> – 220 €/m<sup>3</sup>** .+  * Price: Estimated at **160 €/m<sup>3</sup> – 220 €/m<sup>3</sup>** .
  
 **C. Geopolymer Gel Concrete** **C. Geopolymer Gel Concrete**
 +
 A cement-free binder using materials like fly ash and metakaolin modified with nano-silica (SiO<sub>2</sub>) [(LAI2026)]. A cement-free binder using materials like fly ash and metakaolin modified with nano-silica (SiO<sub>2</sub>) [(LAI2026)].
-  * **Pros:** Significantly **lower CO<sub>2</sub> footprint** than Portland cement [(LAI2026)]. It shows superior resistance to chloride and sulfate attack in "wet-thermal" marine environments [(LAI2026)]. +  * Pros: Significantly **lower CO<sub>2</sub> footprint** than Portland cement [(LAI2026)]. It shows superior resistance to chloride and sulfate attack in "wet-thermal" marine environments [(LAI2026)]. 
-  * **Cons:** Higher production costs currently limit wide adoption [(LAI2026)]. +  * Cons: Higher production costs currently limit wide adoption [(LAI2026)]. 
-  * **Price:** Estimated at **150 €/m<sup>3</sup> – 200 €/m<sup>3</sup>**.+  * Price: Estimated at **150 €/m<sup>3</sup> – 200 €/m<sup>3</sup>**.
  
 **D. ECOncrete® / Sulfoaluminate Cement (SAC)** **D. ECOncrete® / Sulfoaluminate Cement (SAC)**
 +
 A proprietary concrete mix designed to reduce surface alkalinity to a neutral pH [(SELLA2015)]. A proprietary concrete mix designed to reduce surface alkalinity to a neutral pH [(SELLA2015)].
-  * **Pros:** Surface **pH of 9–10** (closer to seawater's 8) promotes the settlement of "ecosystem engineers" like oysters, serpulid worms, and coralline algae. These organisms provide **bioprotection**, adding a calcified layer that strengthens the structure and limits oxygen/chloride penetration [(SELLA2015)]. +  * Pros: Surface **pH of 9–10** (closer to seawater's 8) promotes the settlement of "ecosystem engineers" like oysters, serpulid worms, and coralline algae. These organisms provide **bioprotection**, adding a calcified layer that strengthens the structure and limits oxygen/chloride penetration [(SELLA2015)]. 
-  * **Cons:** Requires specialized design to ensure the lower pH doesn't compromise the protection of internal steel if used. +  * Cons: Requires specialized design to ensure the lower pH doesn't compromise the protection of internal steel if used. 
-  * **Price:** Estimated at **140 €/m<sup>3</sup> – 180 €/m<sup>3</sup>**.+  * Price: Estimated at **140 €/m<sup>3</sup> – 180 €/m<sup>3</sup>**.
  
 **E. Recycled Glass (Partial Aggregate Replacement)** **E. Recycled Glass (Partial Aggregate Replacement)**
 +
 Crushed waste glass used to replace up to 30 % of fine aggregates in the concrete mix [(DAAROL2026)]. Crushed waste glass used to replace up to 30 % of fine aggregates in the concrete mix [(DAAROL2026)].
-  * **Pros:** Improves **chemical resistance** and reduces water absorption [(DAAROL2026)]. It offers an eco-friendly way to utilize waste while maintaining sufficient compressive strength for marine applications [(DAAROL2026)]. +  * Pros: Improves **chemical resistance** and reduces water absorption [(DAAROL2026)]. It offers an eco-friendly way to utilize waste while maintaining sufficient compressive strength for marine applications [(DAAROL2026)]. 
-  * **Cons:** Replacing more than 30 % of aggregate leads to a **significant reduction in compressive strength** [(DAAROL2026)]. +  * Cons: Replacing more than 30 % of aggregate leads to a **significant reduction in compressive strength** [(DAAROL2026)]. 
-  * **Price:** Estimated at **90 €/m<sup>3</sup> – 140 €/m<sup>3</sup>**.+  * Price: Estimated at **90 €/m<sup>3</sup> – 140 €/m<sup>3</sup>**.
  
  
 **F. Biorock (Mineral Accretion)** **F. Biorock (Mineral Accretion)**
 +
 Uses low-voltage DC electricity to precipitate minerals (limestone) directly from seawater onto an iron frame. Uses low-voltage DC electricity to precipitate minerals (limestone) directly from seawater onto an iron frame.
-  * **Pros:** Accelerates biological growth by **400 %** and allows the structure to **self-repair** after impacts. +  * Pros: Accelerates biological growth by **400 %** and allows the structure to **self-repair** after impacts. 
-  * **Cons:** Requires **constant power** from a buoy; if the power is interrupted, the iron frame corrodes rapidly. +  * Cons: Requires **constant power** from a buoy; if the power is interrupted, the iron frame corrodes rapidly. 
-  * **Price:** Base infrastructure **120 €/m<sup>3</sup> – 160 €/m<sup>3</sup>** (excluding electrical components).+  * Price: Base infrastructure **120 €/m<sup>3</sup> – 160 €/m<sup>3</sup>** (excluding electrical components).
  
 == 2.5.1.1 Compararative Table == == 2.5.1.1 Compararative Table ==
Line 273: Line 280:
 <color #6aa84f>__//**TO BE CHECKED WHEN THE PROTOTYPE HAS TO BE DONE**//__</color> <color #6aa84f>__//**TO BE CHECKED WHEN THE PROTOTYPE HAS TO BE DONE**//__</color>
  
-- Option 1 :One possible option is to combine basalt fabric reinforcement with reused concrete or industrial waste. However, the pH level must be tested to ensure that the material is suitable for water exposure.+- Option 1: One possible option is to combine basalt fabric reinforcement with reused concrete or industrial waste. However, the pH level must be tested to ensure that the material is suitable for water exposure. 
 + 
 +  * **Pros** It is similar to the actual product and cuts down on costs. 
 +  * **Cons** It is impossible to modify the model design and there is no marketing advantage because it is not different from existing business.
  
-  * **pros** It is similar to the actual product and cuts down on costs. +- Option 2: Polymer clay can be shaped into the desired model and then hardened by baking it in an oven. 
-  * **cons** It is impossible to modify the model design and there is no marketing advantage because it is not different from existing business.+  
 +  * **Pros** It is possible to be mini version of the actual model in any shape and cuts down on costs. 
 +  * **Cons** There are size limitations depending on the oven and it is different from the model of actual project so not sure if it will approve.
  
-- Option 2 : Polymer clay can be shaped into the desired model and then hardened by baking it in an oven. 
-  * **pros** It is possible to be mini version of the actual model in any shape and cuts down on costs. 
-  * **cons** There are size limitations depending on the oven and it is different from the model of actual project so not sure if it will approve. 
  
 === 2.5.2 Sensor placements === === 2.5.2 Sensor placements ===
Line 330: Line 339:
  
 ==== 2.6 Summary ==== ==== 2.6 Summary ====
-Chapter 2 gives an overview of existing artificial reef concepts, relevant companies, material choices, sensor challenges, and biological and geographical factors. It shows that Maris Habitats differs from many existing solutions by combining modular reef blocks with a removable smartblock for long-term local data logging. The chapter also highlights that successful reef design depends on durable marine materials, structural complexity, suitable sensor placement, and careful site selection.+Chapter 2 gives an overview of existing artificial reef concepts, relevant companies, material choices, sensor challenges, and biological and geographical factors. It shows that Maris Habitats differs from many existing solutions by combining modular reef blocks with a removable smartlogger for long-term local data logging. The chapter also highlights that successful reef design depends on durable marine materials, structural complexity, suitable sensor placement, and careful site selection.