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High-Performance Concrete from Rubber and Shell Waste Materials: Experimental and Computational Analysis.
Alejandra Miranda1, Ricardo Muñoz2, Cristopher Aedo2
1College of Engineering, Architecture, and Design, Universidad San Sebastián, Campus Las Tres Pascualas, Lientur 1457, Concepción 4060000, Chile.
Materials (Basel, Switzerland)
|November 27, 2024
Summary
Eco-friendly concrete using marine shells and recycled rubber shows promise for sustainable construction. Marine shell concrete enhanced strength, while rubber concrete reduced density, demonstrating waste valorization potential.
Area of Science:
- Materials Science
- Civil Engineering
- Environmental Science
Background:
- Growing environmental concerns and waste generation necessitate sustainable solutions in the construction industry.
- Incorporating industrial solid waste into building materials offers a pathway to reduce pollution and promote ecological practices.
- Eco-friendly concrete production is crucial for decarbonization and waste valorization in construction.
Purpose of the Study:
- To investigate the feasibility of producing eco-friendly structural concrete using marine shells and recycled rubber.
- To compare the performance of novel eco-friendly concrete mixes with conventional concrete.
- To analyze the impact of waste material integration on concrete properties and structural integrity.
Main Methods:
- Experimental production of two types of eco-friendly concrete utilizing marine shells and recycled rubber.
- Comparative analysis of mechanical properties (compressive strength, density) against conventional concrete.
- Computational modeling to understand the relationship between porosity, Young's modulus, and concrete strength.
Main Results:
- Marine shell concrete exhibited a compressive strength of 32.4 MPa, exceeding conventional concrete by 26.5%, with a 1% weight reduction.
- Recycled rubber concrete showed a compressive strength of 22.5 MPa (2 MPa lower than conventional) but achieved a 4.3% density reduction.
- Computational analysis confirmed that increased porosity negatively impacts Young's modulus and maximum strength.
Conclusions:
- The integration of marine shells and recycled rubber is a viable method for producing sustainable structural concrete.
- Waste valorization through concrete production contributes to environmental protection and resource efficiency.
- Optimized incorporation of industrial waste can lead to improved concrete properties and support decarbonization efforts.
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