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Related Concept Videos

Bricks01:14

Bricks

87
Bricks, a fundamental building material, are crafted from fired clay and exhibit a range of shapes, sizes, and colors. The production process starts with extracting local clay or shale, which is then crushed, ground, and screened for a fine texture. The refined material is blended with water, creating a pliable mixture that can be formed into bricks using one of three processes: soft mud, dry press, or stiff mud methods.
Soft mud bricks are shaped in molds with high moisture content and can be...
87
Brick Classifications01:16

Brick Classifications

103
Bricks, a fundamental component of construction, are categorized based on their application and structural characteristics into several types. These include facing bricks, building bricks, hollow bricks, paving bricks, and firebricks. Facing bricks, also referred to as face bricks, are primarily used for both structural support and visual appeal, making their appearance a crucial aspect. In contrast, building bricks are typically used in concealed sections of a structure, such as behind the...
103
Design Example: Sustainability in Concrete Building01:26

Design Example: Sustainability in Concrete Building

154
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...
154
Thermal Insulation in Masonry Walls01:22

Thermal Insulation in Masonry Walls

104
In hot, dry climates, the thermal mass of masonry walls can be beneficial, absorbing heat during the day and releasing it at night, thereby stabilizing indoor temperatures. However, in most other climates, additional insulation is necessary to enhance thermal resistance.
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
104
Brick Durability, Strength, and Appearance01:15

Brick Durability, Strength, and Appearance

142
Brick durability, strength, and appearance are crucial factors in construction, influencing the choice of bricks for specific applications. The process of freeze-thaw, for instance, significantly affects brick durability. This phenomenon occurs when water absorbed by a brick expands as it freezes, potentially causing damage when it melts and refreezes. Bricks are graded for durability: SW-grade bricks are the most durable, offering high strength and low water absorption, followed by MW-grade...
142
Reinforced Brick Masonry01:15

Reinforced Brick Masonry

630
Reinforced brick masonry is an advanced construction technique that enhances the structural integrity of brick walls by incorporating steel reinforcements. These reinforcements are either placed within the hollow cores of bricks or sandwiched between two layers of masonry, known as wythes, and are then secured in place with grout. Grout is a fluid mixture composed of Portland cement, aggregate, and water, providing the necessary bonding agent for the steel and brick.
To fortify brick walls...
630

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Updated: May 30, 2025

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Green building development utilising modified fired clay bricks and eggshell waste.

Wafaa Soliman1, Yasser M Z Ahmed2, Ahmed Ghitas3

  • 1Geology Department, Faculty of Science, Sohag University, Sohag, Egypt. wafaaahmed602@yahoo.com.

Scientific Reports
|January 27, 2025
PubMed
Summary

Incorporating eggshell waste into fired clay bricks significantly enhances their thermal insulation properties. This sustainable approach repurposes waste, leading to more energy-efficient and durable construction materials with reduced heat conductivity.

Keywords:
Bulk densityClay–eggshell composite bricksEggshell waste recyclingShrinkage behaviourSurface porosityThermophysical compositions

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Area of Science:

  • Materials Science
  • Sustainable Construction
  • Waste Management

Background:

  • Inadequate building envelope thermal insulation leads to high energy consumption for heating and cooling.
  • Effective waste recycling and disposal are critical environmental and economic challenges.
  • There is a need for sustainable construction materials with improved thermal resistance.

Purpose of the Study:

  • To assess the feasibility of using eggshell waste as a calcium carbonate filler in fired clay bricks.
  • To investigate the impact of varying eggshell content on the physicochemical and thermal properties of bricks.
  • To determine the potential of repurposed waste materials for creating energy-efficient construction solutions.

Main Methods:

  • Systematic investigation of physicochemical and thermal characteristics of bricks with different eggshell waste percentages.
  • Analysis of thermal conductivity, diffusivity, effusivity, porosity, bulk density, and mechanical strength.
  • Utilized X-ray Diffraction (XRD) and Energy-Dispersive X-ray (EDX) spectroscopy for material characterization.

Main Results:

  • Bricks with 7 wt% eggshell (CEs7%) showed reduced dry shrinkage (38.7%), increased average pore size (78.8%), higher apparent porosity (52.7%), and improved compressive strength (57.5%).
  • The brick with 10% eggshell fired at 1100°C exhibited a 50% reduction in heat conductivity, 30% in thermal diffusivity, and 30% in thermal effusivity compared to pristine bricks.
  • Siliceous melt formation at elevated firing temperatures was identified as a key factor for enhanced insulation properties.

Conclusions:

  • Integrating eggshell waste into fired clay bricks significantly improves thermal insulation capabilities and material performance.
  • The addition of eggshell waste transforms waste into a valuable resource for sustainable building materials.
  • These enhanced bricks offer a viable solution for reducing building energy consumption for heating and cooling.