Investigation of color pigment incorporated roller compacted high performance concrete as a mitigation tool against urban heat island

Çaliş, Gökhan; Yıldızel, Sadık Alper; Keskin, Ülkü Sultan

doi:10.1016/j.cscm.2022.e01479

Cited by 5 publications

(1 citation statement)

References 86 publications

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“…Focusing on improving the thermal performance of concrete compounds, which aligns with the current emphasis on energy efficiency, these additives are designed to increase the energy efficiency of the spaces or structures where the concrete mixture is included. In this context, pigmented mortars emerge as a compelling solution due to their capacity to not only improve thermal characteristics (extending beyond the aesthetic appeal) but also ensure the preservation of the concrete’s mechanical properties [ 16 ]. The incorporation of pigments into concrete offers advantages compared to alternative options such as paints, owing to their greater durability and environmental attributes.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Thermal Efficiency in Water Storage Tanks Using Pigmented Recycled Concrete

López-Rebollo,

Nieto,

Sáez Blázquez

et al. 2024

Materials

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The present work investigated the manufacture of elements such as water tanks from recycled concrete for applications where industries require water heating. This proposal leverages precast rejects for recycled concrete and incorporates colouring pigments. It is expected to contribute to the circularity of construction materials (due to the total replacement of natural aggregates by recycled aggregates) as well as to energy and emissions savings, which are attributed to improved thermal performance driven by the thermal behaviour that the coloration pigment gives to the manufactured concrete elements. To assess the efficacy of the proposed solution, on the one hand, mechanical tests were carried out in tensile, compression and modulus of elasticity, which showed a suitable concrete dosage for HA-30 structural concrete. Simultaneously, in search for a material that would increase the internal temperature of the tanks, thermal tests were carried out in a controlled laboratory environment on samples with different percentages of pigment, and an optimum concentration of 1% was obtained. It was also found that the thermal conductivity remained almost unaffected. Finally, two water tank prototypes were manufactured and tested under real environmental conditions: one with the optimised pigment concentration solution and other (the reference tank) without pigment. The results revealed that the colourised tank with the optimal concentration resulted in an average water temperature increase of 2 °C with respect to the reference tank. Finally, the economic and environmental benefits of this temperature increase were studied for industrial processes requiring water heating with a potential saving of 8625 kWh per month.

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Section: Introductionmentioning

confidence: 99%