Self-cooling concrete pavers – performance tests by long-term studies under various climatic conditions
- In the last several decades, the rural exodus has led to an increasing number of inhabitants in the urban areas. The increased building and infrastructural construction caused the transformation of the landscape and to an increased land sealing in these areas. Consequently, the increased land sealing influences the air temperatures in the cities, since houses, streets and squares heat up continuously. As a result, the city and metropolitan areas became significantly warmer than their surroundings - the effect is known as Urban Heat Island (UHI). These changes have a negative impact for the quality of life. To deal with the negative effects of UHI, a high level of technical and financial effort is necessary. The costs caused by the UHI effects are in the range of several billion US dollars worldwide per year. The recent studies on UHI showed that the established methods like parks and green spaces or bright coatings for roof areas will soon not be able to effectively cope with the UHIIn the last several decades, the rural exodus has led to an increasing number of inhabitants in the urban areas. The increased building and infrastructural construction caused the transformation of the landscape and to an increased land sealing in these areas. Consequently, the increased land sealing influences the air temperatures in the cities, since houses, streets and squares heat up continuously. As a result, the city and metropolitan areas became significantly warmer than their surroundings - the effect is known as Urban Heat Island (UHI). These changes have a negative impact for the quality of life. To deal with the negative effects of UHI, a high level of technical and financial effort is necessary. The costs caused by the UHI effects are in the range of several billion US dollars worldwide per year. The recent studies on UHI showed that the established methods like parks and green spaces or bright coatings for roof areas will soon not be able to effectively cope with the UHI effect in urban areas. Therefore there is a need for additional methods to mitigate UHI effect in the cities. The streets, sidewalks and squares represent approximately 30% to 40% of the inner cities areas. If these areas are designed functionally, they can have a significant impact on the UHI. This contribution focuses on development of a concrete paving stone with self-cooling properties. For the cooling effect the evaporative cooling is used. The paving stone is able to store large quantities of water and deliver during appropriate environmental conditions. This paper deals with the results of the long-term experiments on the test-fields under different climatic conditions. To interpret the test-field-results, laboratory tests were carried out as well. The paper presents and discuss the obtained results, and points out the difficulties occurred.…
Autor*innen: | Nico VoglerORCiD, Maria Barthel, Hans-Carsten KühneORCiD |
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Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Eigenverlag BAM |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | 2nd International Conference on Advances in Cement and Concrete Technology in Africa - Proceedings |
Jahr der Erstveröffentlichung: | 2016 |
Erste Seite: | 595 |
Letzte Seite: | 602 |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Sanitär- und Kommunaltechnik; Umwelttechnik |
Freie Schlagwörter: | Betonpflasterstein; Hitzeinsel; Langzeitversuch; Nachweis der Wirksamkeit; Selbstkühlend Concrete paving stone; Long-term studies; Performance tests; Self-cooling; Urban heat island |
Veranstaltung: | 2nd International conference on advances in cement and concrete technology in Africa |
Veranstaltungsort: | Dar es Salaam, Tanzania |
Beginndatum der Veranstaltung: | 27.01.2016 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 14.04.2016 |
Referierte Publikation: | Nein |