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Investigation of the Water Damage Resistance and Storability of a SEBS-Modified Cold-Patching Asphalt Mixture

At present, achieving good storability and water damage resistance remains challenging for cold-patching asphalt mixtures (CAMs). To address this issue, this study selects styrene–ethylene–butadiene–styrene copolymer (SEBS) and diesel as a modifier and diluent, respectively, to improve the water sta...

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Autores principales: Zhang, Yuechao, Chen, Zirun, Zhang, Xiaoyuan, Zhang, Yanhao, Zhu, Xiaojun, Li, Qinsong, Liu, Shuai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9738908/
https://www.ncbi.nlm.nih.gov/pubmed/36501586
http://dx.doi.org/10.3390/polym14235191
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author Zhang, Yuechao
Chen, Zirun
Zhang, Xiaoyuan
Zhang, Yanhao
Zhu, Xiaojun
Li, Qinsong
Liu, Shuai
author_facet Zhang, Yuechao
Chen, Zirun
Zhang, Xiaoyuan
Zhang, Yanhao
Zhu, Xiaojun
Li, Qinsong
Liu, Shuai
author_sort Zhang, Yuechao
collection PubMed
description At present, achieving good storability and water damage resistance remains challenging for cold-patching asphalt mixtures (CAMs). To address this issue, this study selects styrene–ethylene–butadiene–styrene copolymer (SEBS) and diesel as a modifier and diluent, respectively, to improve the water stability and storability of CAMs. The diesel oil content is determined through the Brookfield rotational viscosity test, and the modifier content is obtained through the Marshall stability test. With the empirical formula method, paper trail test, and modified Marshall test, mixed designs of CAMs modified with and without SEBS are established to determine the best cold-patching asphalt content. On this basis, the modification effect of SEBS is verified by comparing the test results of the modified and unmodified CAMs, and the water stability and Marshall stability tests are conducted before and after CAM storage, respectively. Results show that the optimum contents of SEBS and diesel oil are 7.5% and 40% of the base asphalt weight, respectively, and the best modified asphalt content is 4.6% of the mineral material weight in CAM. The Marshall residual stability and freeze–thaw splitting strength ratio of the 7.5% SEBS-modified CAM are increased by 20.1% and 15.7%, respectively, relative to the unmodified CAM, and the storage performance requirement of at least two months can be guaranteed.
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spelling pubmed-97389082022-12-11 Investigation of the Water Damage Resistance and Storability of a SEBS-Modified Cold-Patching Asphalt Mixture Zhang, Yuechao Chen, Zirun Zhang, Xiaoyuan Zhang, Yanhao Zhu, Xiaojun Li, Qinsong Liu, Shuai Polymers (Basel) Article At present, achieving good storability and water damage resistance remains challenging for cold-patching asphalt mixtures (CAMs). To address this issue, this study selects styrene–ethylene–butadiene–styrene copolymer (SEBS) and diesel as a modifier and diluent, respectively, to improve the water stability and storability of CAMs. The diesel oil content is determined through the Brookfield rotational viscosity test, and the modifier content is obtained through the Marshall stability test. With the empirical formula method, paper trail test, and modified Marshall test, mixed designs of CAMs modified with and without SEBS are established to determine the best cold-patching asphalt content. On this basis, the modification effect of SEBS is verified by comparing the test results of the modified and unmodified CAMs, and the water stability and Marshall stability tests are conducted before and after CAM storage, respectively. Results show that the optimum contents of SEBS and diesel oil are 7.5% and 40% of the base asphalt weight, respectively, and the best modified asphalt content is 4.6% of the mineral material weight in CAM. The Marshall residual stability and freeze–thaw splitting strength ratio of the 7.5% SEBS-modified CAM are increased by 20.1% and 15.7%, respectively, relative to the unmodified CAM, and the storage performance requirement of at least two months can be guaranteed. MDPI 2022-11-29 /pmc/articles/PMC9738908/ /pubmed/36501586 http://dx.doi.org/10.3390/polym14235191 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Yuechao
Chen, Zirun
Zhang, Xiaoyuan
Zhang, Yanhao
Zhu, Xiaojun
Li, Qinsong
Liu, Shuai
Investigation of the Water Damage Resistance and Storability of a SEBS-Modified Cold-Patching Asphalt Mixture
title Investigation of the Water Damage Resistance and Storability of a SEBS-Modified Cold-Patching Asphalt Mixture
title_full Investigation of the Water Damage Resistance and Storability of a SEBS-Modified Cold-Patching Asphalt Mixture
title_fullStr Investigation of the Water Damage Resistance and Storability of a SEBS-Modified Cold-Patching Asphalt Mixture
title_full_unstemmed Investigation of the Water Damage Resistance and Storability of a SEBS-Modified Cold-Patching Asphalt Mixture
title_short Investigation of the Water Damage Resistance and Storability of a SEBS-Modified Cold-Patching Asphalt Mixture
title_sort investigation of the water damage resistance and storability of a sebs-modified cold-patching asphalt mixture
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9738908/
https://www.ncbi.nlm.nih.gov/pubmed/36501586
http://dx.doi.org/10.3390/polym14235191
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