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Related Concept Videos

Design Example: Sustainability in Concrete Building01:26

Design Example: Sustainability in Concrete Building

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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...
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Ferrocement01:30

Ferrocement

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Ferro-cement is a distinctive construction material that represents an innovative variant of reinforced concrete, characterized by its unique composition and the method by which it is formed. Unlike standard reinforced concrete, which relies on larger steel bars for reinforcement, ferro-cement utilizes densely packed layers of mesh or fine rods, fully encased in cement mortar. This composition allows for the creation of structures that are significantly thinner and more flexible than their...
155

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Related Experiment Video

Updated: Jun 13, 2025

The Effect of Construction and Demolition Waste Plastic Fractions on Wood-Polymer Composite Properties
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Development of Sustainable Construction Materials from Inert Waste Mixtures Using the Mechanosynthesis Process.

Rabah Hamzaoui1,2, Othmane Bouchenafa3, Rachida Idir4

  • 1Institut de Recherche, ESTP/Université Paris-Est, 28 Avenue du Président Wilson, 94234 Cachan, France.

Materials (Basel, Switzerland)
|September 14, 2024
PubMed
Summary

Mechanosynthesis transforms construction waste like recycled concrete and glass into sustainable building materials. This process significantly boosts material strength, offering an eco-friendly alternative to traditional cement.

Keywords:
cement formulationsinert wastemechanosynthesisreactivity enhancementsustainable construction materials

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Area of Science:

  • Materials Science
  • Sustainable Engineering
  • Waste Valorization

Background:

  • Construction and demolition waste (CDW) presents significant environmental challenges.
  • Traditional cement production contributes substantially to global CO2 emissions.
  • Developing sustainable construction materials from waste is crucial for environmental protection.

Purpose of the Study:

  • To investigate the efficacy of mechanosynthesis in converting inert waste streams into viable construction materials.
  • To develop and characterize novel cementitious materials using recycled concrete, recycled glass, and excavated soils.
  • To evaluate the mechanical properties and potential of these waste-derived materials as cement substitutes.

Main Methods:

  • Utilized mechanosynthesis to process recycled concrete, recycled glass, and excavated soils.
  • Formulated two distinct material compositions (F1 and F2) for cement paste production.
  • Partially substituted ordinary Portland cement (CEM I) with 50% of the developed waste formulations.
  • Conducted material characterization using X-ray diffraction (XRD) and ATR-FTIR.
  • Performed mechanical testing to determine compressive strength at various curing ages and milling conditions.

Main Results:

  • Milled waste materials significantly enhanced the compressive strength of cement pastes compared to unmilled counterparts.
  • Compressive strengths reached up to 49.7 MPa at 28 days and 61 MPa at 90 days with optimized milling parameters.
  • Formulation F1 demonstrated superior compressive strengths compared to reference CEM II and CEM III cement pastes.
  • Mechanosynthesis effectively improved the performance of waste-derived construction materials.

Conclusions:

  • Mechanosynthesis is a highly effective technique for valorizing construction and demolition waste into high-performance sustainable materials.
  • The developed waste formulations show promise as partial replacements for conventional cement, reducing CO2 footprint.
  • This research contributes to the development of environmentally friendly construction materials and promotes a circular economy in the building sector.