TY - CONF A1 - Barthel, Maria A1 - Schmidt, Wolfram A1 - Kühne, Hans-Carsten ED - Uzoegbo, H.C. ED - Schmidt, Wolfram T1 - Concrete pavers for the mitigation of the urban heat island effect N2 - Nowadays an increasing population escapes from rural to urban regions worldwide. Especially in developing countries the number of inhabitants in urban areas triplicated from the 1950s until today. These changes entail a higher demand for residential buildings and infrastructure. Therefore, the building density and the land sealing rise because of the growing cities. Existing vegetation is replaced by sealed or paved surfaces. Concrete as building material provides a high capacity for heat storage, so that the temperature in densely populated inner cities increases. Hence, the microclimate in cities has become warmer than in the surrounding rural areas. This phenomenon is called Urban Heat Island Effect. In the presented research the aim is to reduce this effect by applying self-cooling concrete pavers at large open areas. These concrete pavers differ from normal pavers by their ability to store water temporarily. Thus these pavements counterbalance the absorption of solar radiation and the subsequent transfer of this heat to the surroundings based on the use of evaporation enthalpy. To bring this concept into practice without losing the mandatory specifications like sufficient compressive strength a multilayer design for the pavers was selected and the concrete mixture compositions were optimized for appropriate water transport properties. For the utilization in climate zones with marginal precipitation events only the concept has to be adapted to the circumstances, for example with a separate water supply. T2 - ACCTA - International conference on advances in cement and concrete technology in Africa 2013 CY - Johannesburg, South Africa DA - 28.01.2013 KW - Urban heat island effect KW - Earth-moist concrete KW - Concrete multilayers pavers KW - Water storage KW - Self-cooling pavement PY - 2013 SN - 978-3-9815360-3-4 SP - 953 EP - 960 AN - OPUS4-27769 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -