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Bricks made with olive pomace delay heat entry, increase thermal comfort, and transform olive oil production waste into sustainable building material
What remains after the olive oil can become a wall against heat, offering a practical solution for houses in hot regions. The addition of olive pomace in earthen bricks increases the thermal delay, causing the walls to take longer to heat up. This technique combines comfort, energy savings, and the use of waste that was previously discarded.
Besides reducing the internal heat, the use of bricks with olive residue is part of a circular economy logic, where by-products of the food industry gain new utility, avoiding waste and environmental impact. The result is a more sustainable and efficient construction, especially in hot and dry climates.
What is olive pomace
The olive pomace is the residue left after the extraction of olive oil, consisting of pulp, crushed pit, and fruit fibers. This material is abundant in producing regions and, without reuse, represents an environmental challenge due to the volume generated and odors released.
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The residue is rich in fibers, which allows reducing the heat transfer when incorporated into earthen bricks. This characteristic makes the material promising for sustainable construction and cooler homes.
How it enters the earthen bricks
The production involves mixing raw soil with up to forty percent olive pomace before molding and drying the blocks. This composition creates small internal voids, which act as natural insulation, increasing the time it takes for the wall to heat up.
The information was published by Construction and Building Materials, a scientific journal specializing in construction materials, which detailed the thermal performance of bricks with residue. The study shows that walls with olive pomace can be up to three times slower in transmitting heat, ensuring more comfort inside residences.
Why Thermal Lag Matters in Hot Houses
Thermal lag determines how long it takes for a wall to transmit heat from outside to inside. In houses with high sun exposure, bricks with plant fibers keep the indoor environment cooler during critical hours of the day, reducing the use of fans or air conditioning.
This effect increases daily comfort and reduces electricity consumption. For residents of hot regions, thermal gain means less spending on cooling and greater energy efficiency.
Limits of Humidity, Resistance, and Standards
Despite the thermal advantages, bricks with high bagasse content may have lower mechanical resistance than traditional blocks. Technical standards require minimum parameters of durability and stability to ensure safety.
Moisture problems can also occur if the block is not well protected from water. The information was published by Construction and Building Materials, a scientific journal specializing in construction materials, reinforcing that it is possible to balance thermal efficiency and safety with proper planning.
The use of earth bricks with olive residue represents a practical and sustainable solution, integrating comfort, economy, and reuse of agricultural waste.
Do you believe that houses built with food waste can become standard in hot regions of Brazil? Share your opinion in the comments.
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