Effect of Sampietrini Pavers on Urban Heat Islands

Abstract

Cool pavements are reflective and/or permeable pavements that improve microclimate of urban areas where heat islands cause discomfort to citizens. Stone pavements lower surface temperatures and reduce the amount of heat absorbed. This study assessed, using ENVI-met 4.3 LITE software, how air temperature and predicted mean vote depend on physical properties of the road pavement. A comparative microclimatic analysis was implemented on a rectangular square in Rome (Italy) in the summer, paved in three different ways: asphalt, traditional sampietrini, and permeable sampietrini. The model considered local weather parameters, surrounding fabric, and vegetation to give reliable results in terms of numerical and graphical output using the application tool Leonardo. The tested pavement types affected air temperature during the day, but did not influence this variable in the early morning. Permeable sampietrini pavement was more effective than traditional sampietrini pavement in reducing air temperature compared to the current asphalt surface. The road pavement did not, however, affect human comfort in terms of predicted mean vote. The obtained results are useful for further investigation of parameters that could modify the microclimatic conditions of urban areas.

The Role of Architectural Skin Emissivity Influencing Outdoor Microclimatic Comfort: A Case Study in Bologna, Italy

“…The originality of the study lies in focusing on the role of emissivity in building façades with relation to effects on outdoor comfort conditions, which is generally investigated by paying more attention to horizontal surfaces, namely roofs [97,98] and paved spaces [99]. The main focus of the scientific literature is usually on the specific albedo of materials [100], on the analysis of UHI patterns and intensities with relation to urban typologies [101], and on mitigation techniques and technologies [102], while the role of vertical surfaces is basically addressed to explore cool façade optimization [103].…”

Heritage BIM Approach for roman pavements

“…Indeed, stone surfaced roads were mostly used in towns, while long distance roads were mainly surfaced with gravel. Paved roads sometimes used rectangular stones and sometimes used close fitting polygonal stones, often eight sided, and it is possible that Romans were already debating regarding relative structural advantage of different shapes in paves (Sitwell, 1981;Zoccali et al, 2018;Garilli & Giuliani, 2018;Soutsos et al, 2011;Moretti et al, 2021). Many Roman roads today have ruts that we can assume were dug during the construction of the roads to guide the chariot wheels, especially on steep roads, and then the repeated wheeling (vehicles could weigh up to 750 kg per axle) only increased their size.…”

Precast Concrete Pavements of High Albedo to Achieve the Net “Zero-Emissions” Commitments

“…Cotana et al [26] reported a reduction of 16,000 tons of CO 2eq provided by a high-albedo surface area of 115,000 m 2 for a service life of 30 years. In addition, permeable pavements are more effective than traditional ones in reducing air temperature compared to the current asphalt surface [27].…”