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The Performance of Super Absorbent Polymer (SAP) Water-Retaining Asphalt Mixture
Lowering the temperature of the road surface is one efficient way to alleviate the urban heat island effect. Therefore water-retaining asphalt mixture was produced by adding super absorbent polymer (SAP) containing cement mortar to the porous asphalt mixture. In this study, the water absorption capa...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6631584/ https://www.ncbi.nlm.nih.gov/pubmed/31216747 http://dx.doi.org/10.3390/ma12121964 |
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author | Geng, Jiuguang Chen, Mingyuan Shang, Tao Li, Xun Kim, Y. Richard Kuang, Dongliang |
author_facet | Geng, Jiuguang Chen, Mingyuan Shang, Tao Li, Xun Kim, Y. Richard Kuang, Dongliang |
author_sort | Geng, Jiuguang |
collection | PubMed |
description | Lowering the temperature of the road surface is one efficient way to alleviate the urban heat island effect. Therefore water-retaining asphalt mixture was produced by adding super absorbent polymer (SAP) containing cement mortar to the porous asphalt mixture. In this study, the water absorption capacity, mechanical strength and fluidity of the cured water-retaining mortar were investigated to determine the optimum SAP dosage in water-retaining mortar. Furthermore, the microstructure of the hardened water-retaining mortar was studied using scanning electron microscopy (SEM) to determine the morphology and distribution of SAP in the final product, which may help to understand the influence of SAP on water retention performance and decipher its underlying mechanism. Compared to the raw porous asphalt mixture, the water-retaining asphalt mixture showed good moisture susceptibility (retained stability (RS) ≥ 88.2%, tensile strength ratio (TSR) ≥ 81.8%), good rutting resistance (9336–10,552 times/mm) and low temperature crack resistance (3383–3621 MPa), as well as significant cooling effects (10–12 °C). The results illustrate that the prepared SAP water-retaining asphalt mixture has good potential in reducing dust and enhancing road performance. |
format | Online Article Text |
id | pubmed-6631584 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-66315842019-08-19 The Performance of Super Absorbent Polymer (SAP) Water-Retaining Asphalt Mixture Geng, Jiuguang Chen, Mingyuan Shang, Tao Li, Xun Kim, Y. Richard Kuang, Dongliang Materials (Basel) Article Lowering the temperature of the road surface is one efficient way to alleviate the urban heat island effect. Therefore water-retaining asphalt mixture was produced by adding super absorbent polymer (SAP) containing cement mortar to the porous asphalt mixture. In this study, the water absorption capacity, mechanical strength and fluidity of the cured water-retaining mortar were investigated to determine the optimum SAP dosage in water-retaining mortar. Furthermore, the microstructure of the hardened water-retaining mortar was studied using scanning electron microscopy (SEM) to determine the morphology and distribution of SAP in the final product, which may help to understand the influence of SAP on water retention performance and decipher its underlying mechanism. Compared to the raw porous asphalt mixture, the water-retaining asphalt mixture showed good moisture susceptibility (retained stability (RS) ≥ 88.2%, tensile strength ratio (TSR) ≥ 81.8%), good rutting resistance (9336–10,552 times/mm) and low temperature crack resistance (3383–3621 MPa), as well as significant cooling effects (10–12 °C). The results illustrate that the prepared SAP water-retaining asphalt mixture has good potential in reducing dust and enhancing road performance. MDPI 2019-06-18 /pmc/articles/PMC6631584/ /pubmed/31216747 http://dx.doi.org/10.3390/ma12121964 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Geng, Jiuguang Chen, Mingyuan Shang, Tao Li, Xun Kim, Y. Richard Kuang, Dongliang The Performance of Super Absorbent Polymer (SAP) Water-Retaining Asphalt Mixture |
title | The Performance of Super Absorbent Polymer (SAP) Water-Retaining Asphalt Mixture |
title_full | The Performance of Super Absorbent Polymer (SAP) Water-Retaining Asphalt Mixture |
title_fullStr | The Performance of Super Absorbent Polymer (SAP) Water-Retaining Asphalt Mixture |
title_full_unstemmed | The Performance of Super Absorbent Polymer (SAP) Water-Retaining Asphalt Mixture |
title_short | The Performance of Super Absorbent Polymer (SAP) Water-Retaining Asphalt Mixture |
title_sort | performance of super absorbent polymer (sap) water-retaining asphalt mixture |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6631584/ https://www.ncbi.nlm.nih.gov/pubmed/31216747 http://dx.doi.org/10.3390/ma12121964 |
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