Evaluation of the cooling effect and anti-rutting performance of thermally resistant and heat-reflective pavement

Jiang, Yingjun; Deng, Changqing; Chen, Zhejiang; Tian, Yuhang

doi:10.1080/10298436.2018.1483506

Cited by 27 publications

(15 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most of the cool pavement impact studies to date are based on numerical modeling, using either mesoscale climate models [24,31,35] or micrometeorological computational fluid dynamics models [23,32,33,[48][49][50][51][52][53][54][55][56][57][58][59][60]. A number of studies have studied the thermal performance of cool pavement segments in laboratory or controlled field measurement settings, but these studies did not investigate the direct impacts on the urban environment [61][62][63][64][65][66][67]. One modeling study [68] used an indoor-outdoor coupled building energy model to study the effects of cool pavements on building energy use.…”

Section: Introductionmentioning

confidence: 99%

Measuring the impacts of a real-world neighborhood-scale cool pavement deployment on albedo and temperatures in Los Angeles

Schlaerth

Bruce

et al. 2022

Environ. Res. Lett.

View full text Add to dashboard Cite

Climate change is expected to exacerbate the urban heat island effect in cities worldwide, increasing the risk of heat-related morbidity and mortality. Solar reflective “cool pavement” is one of several mitigation strategies that may counteract the negative effects of the urban heat island effect. An increase in pavement albedo results in less heat absorption, which results in reduced surface temperatures (Tsurface). Near surface air temperatures (Tair) could also be reduced if cool pavements are deployed at sufficiently large spatial scales, though this has never been confirmed by field measurements. This field study is the first to conduct controlled measurements of the impacts of neighborhood-scale cool pavement installations. We measured the impacts of cool pavement on albedo, Tsurface, and Tair. In addition, pavement albedo was monitored after installation to assess its degradation over time. The field site (~0.64 km2) was located in Covina, California; ~30 km east of Downtown Los Angeles. We found that an average pavement albedo increase of 0.18 (from 0.08 to 0.26) corresponded to maximum neighborhood averaged Tsurface and Tair reductions of 5 °C and 0.2 °C, respectively. Maximum Tsurface reductions were observed in the afternoon, while minimum reductions of 0.9 °C were observed in the morning. Tair reductions were detected at 12:00 local standard time (LST), and from 20:00 LST to 22:59 LST, suggesting that cool pavement decreases Tair during the daytime as well as in the evening. An average albedo reduction of 30% corresponded to a ~1 °C reduction in the Tsurface cooling efficacy. Although we present here the first measured Tair reductions due to cool pavement, we emphasize that the tradeoffs between Tair reductions and reflected shortwave radiation increases are still unclear and warrant further investigation in order to holistically assess the efficacy of cool pavements, especially with regards to pedestrian thermal comfort.

show abstract

Section: Introductionmentioning

confidence: 99%

Measuring the impacts of a real-world neighborhood-scale cool pavement deployment on albedo and temperatures in Los Angeles

Schlaerth

Bruce

et al. 2022

Environ. Res. Lett.

View full text Add to dashboard Cite

show abstract

“…It was found that a thin layer of colored asphalt can lower surface temperatures by as much as 10 °C compared with black asphalt. Jiang et al [ 10 ] performed a series of tests to investigate the cooling effect, rutting resistance performance, and durability of thermally resistant course, heat-reflective coating, and thermally resistant and heat-reflective coating integrated pavement. It was concluded that thermally resistant and heat-reflective coating integrated pavement showed the best performance.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Stone Mastic Asphalt Containing Ceramic Waste Aggregate for Cooling Asphalt Pavement

Huang

Qian

et al. 2020

Materials

View full text Add to dashboard Cite

Construction and demolition waste material is of great potential for use in pavement engineering. This paper aims to investigate the feasibility of ceramic waste aggregate (CA) used in cooling asphalt pavement through a series of test methods and simulation techniques. Stone mastic asphalt (SMA) containing 10%, 20%, 30%, 40%, and 50% coarse ceramic waste aggregate (CASMAs) was first designed using the Marshall method. Afterward, the road performance and thermal insulation performance of the five different CASMAs were assessed by a comprehensive lab test, including a wheel rutting test, moisture susceptibility test, bending beam test, fatigue beam test, and indoor thermal insulation test. Finally, a 2D finite-element (FE) model was developed to investigate the transient thermal field and rutting deformation response of the cooling asphalt pavement with CASMAs. Results show that CASMAs experienced degradation of rutting resistance, moisture susceptibility, and anti-cracking performance while still meeting technical requirements with CA content of up to 40%. On the other hand, CASMAs can cool the pavement’s temperature by 11.5 °C at the bottom of asphalt layers. The permanent rutting deformation of cooling asphalt pavement was 45.36% smaller than that of conventional asphalt pavement without CASMAs. Based on the test results and numerical simulation results, the optimum content of ceramic waste aggregate in stone mastic asphalt was recommended as 40%.

show abstract

“…Coating an asphalt pavement with a heat-reflective layer can not only enhance the road surface's ability to reflect solar radiation, and reduce both its temperature and rutting deformation but also decrease its heat storage and alleviate the urban heat island effect [10][11][12][13][14][15]. Heat-reflective coatings can have an excellent cooling effect, reduce the temperature of asphalt pavements by 8-16 • C during high-temperature periods in summer [16][17][18][19]. Cao et al compared the internal temperature of asphalt and heat-reflective pavements; At 2.5 cm depth, the temperature of the traditional pavement reached 62.7 • C, while that of the heat-reflective one was reduced by 9 • C [12].…”

Section: Introductionmentioning

confidence: 99%

“…Cao et al also tested the permeability of heat-reflective pavements, finding that they are basically impermeable because the coating almost seals their surface, preventing water from entering the concrete interior and, hence, avoiding asphalt and pavement damage [12]. The microstructures of the heat-reflective coatings and their components have been investigated via scanning electron microscopy [16,18,23,26,[28][29][30][31][32]. Moreover, Hu et al performed accelerated wear tests to study the wear performance of these coatings; the results showed quality loss after wearing, but an improved anti-skid granular stirring method could enhance the wear performance [17,24,33].…”

Section: Introductionmentioning

confidence: 99%

Development of Super Road Heat-Reflective Coating and Its Field Application

Yi¹,

Jiang²,

Li³

et al. 2019

Coatings

Self Cite

View full text Add to dashboard Cite

Heat-reflective coatings, used to reduce the asphalt pavement temperature and urban heat island effect, have a good cooling effect; coating development, however, generally focuses on cooling. This study aims to design a heat-reflective coating with both durability and cooling effect by considering the functions of each component, improving the coating bond strength and abrasion resistance, and conducting laboratory tests and test section verification. The coating developed exhibits bond strength and abrasion resistance 20% and 49%, respectively, higher than those of ordinary coatings. The experiments reveal a cooling effect of red coating up to 10.2 °C, a bond strength of up to 1.20 MPa at 25 °C, and an abrasion rate of up to 25% after 60 min; the cooling effect is basically the same as that for traditional heat-reflective coatings, but the bond strength and abrasion resistance significantly improved. In the analysis of the test section, the cooling effect reaches 7.0 °C, the performance of anti-skid decreases little, and the coating is still usable normally after 4 months.

show abstract

Evaluation of the cooling effect and anti-rutting performance of thermally resistant and heat-reflective pavement

Cited by 27 publications

References 20 publications

Measuring the impacts of a real-world neighborhood-scale cool pavement deployment on albedo and temperatures in Los Angeles

Measuring the impacts of a real-world neighborhood-scale cool pavement deployment on albedo and temperatures in Los Angeles

Evaluation of Stone Mastic Asphalt Containing Ceramic Waste Aggregate for Cooling Asphalt Pavement

Development of Super Road Heat-Reflective Coating and Its Field Application

Contact Info

Product

Resources

About