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Related Concept Videos

Abrasion Resistance of Concrete01:23

Abrasion Resistance of Concrete

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Abrasion resistance is an essential characteristic of concrete that determines its durability and longevity under various wear conditions. Concrete surfaces are vulnerable to different types of abrasion. For instance, surfaces may wear down due to the constant movement of vehicles or be eroded by solids carried in water, as seen in concrete canal linings. Specific tests are conducted to measure the abrasion resistance of concrete.
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Fiber Reinforced Concrete01:22

Fiber Reinforced Concrete

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Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
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Fatigue Strength of Concrete01:22

Fatigue Strength of Concrete

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Fatigue, in the context of materials science and engineering, refers to the weakening or failure of a material caused by repeatedly applied loads, even if these loads are below the strength limit of the material. Fatigue strength in concrete is a critical property that influences its durability and longevity. Concrete can fail in two ways due to fatigue. Static fatigue or creep rupture occurs under a constant load or one that increases slowly. The other failure mode is due to cyclical or...
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Superplasticizers01:30

Superplasticizers

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Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...
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Shrinkage in Concrete01:27

Shrinkage in Concrete

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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.
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Effects of Air-entrainment in Concrete01:28

Effects of Air-entrainment in Concrete

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Air entrainment in concrete significantly enhances the material's durability, especially in environments subjected to freeze-thaw cycles. Introducing small air bubbles into the concrete mix acts as internal voids that accommodate the expansion of water when it freezes, thereby alleviating internal stress and preventing structural cracks. This function is crucial in climates with significant freezing and thawing, as it protects the concrete from repeated stresses that could lead to premature...
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Updated: Jun 6, 2025

Production and Analysis of Sporosarcina pasteurii Biocement Bricks Using Custom 3D-Printed Molds for Unconfined Compression Tests
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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
PubMed
Summary
This summary is machine-generated.

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.

Keywords:
decarbonizationeco-concreteporositystructural concretewaste valorization

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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.