Study on Conventional and Rheological Properties of Corn Stalk Bioasphalt/PPA Composite Modified Asphalt

As a new type of pavement material, bioasphalt has received more and more attention. However, the high-temperature behavior of bioasphalt is poor after blending with asphalt binder. In order to solve this problem and facilitate the waste utilization and resource conservation, the corn stalk bioaspha...

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Autores principales:	Fuhai Wang, Tuo Huang, Gongfeng Xin, Minghao Mu, Quanjun Shen
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/395aa10312d245958254fecdd4e96c2d
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spelling	oai:doaj.org-article:395aa10312d245958254fecdd4e96c2d2021-11-08T02:36:49ZStudy on Conventional and Rheological Properties of Corn Stalk Bioasphalt/PPA Composite Modified Asphalt1687-809410.1155/2021/7928189https://doaj.org/article/395aa10312d245958254fecdd4e96c2d2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/7928189https://doaj.org/toc/1687-8094As a new type of pavement material, bioasphalt has received more and more attention. However, the high-temperature behavior of bioasphalt is poor after blending with asphalt binder. In order to solve this problem and facilitate the waste utilization and resource conservation, the corn stalk bioasphalt/PPA composite modified asphalt was proposed. The conventional performance tests and rheological tests were conducted to evaluate high-temperature and low-temperature behavior. Fourier transform infrared reflection (FTIR) test was undertaken to analyze the mechanism of modified asphalt. The results indicated that blended asphalt penetration and ductility gradually decrease with the PPA content increasing. The softening point and viscosity of the modified asphalt increased, which led to an improvement of blended asphalt’s rigidity. The PPA increased the rutting index of corn stalk bioasphalt/PPA composite modified asphalt. However, bioasphalt had a negative effect on its high-temperature performance. The corn stalk bioasphalt/PPA composite modified asphalt could meet the specification requirement at −18°C considering the creep rate and stiffness modulus, indicating it had outstanding crack resistance. When the PPA and bioasphalt respect to the weight of neat asphalt were 6%–8% and 10%–16%, respectively, the corn stalk bioasphalt/PPA composite modified asphalt performance was optimal. However, shear time and shear rate merely affected the proposed modified asphalt performance. The bioasphalt did not affect the chemical structure of asphalt. However, PPA generated new functional groups (P-O single bond, phosphate (RO)3P = O, and P=O double bond) causing a chemical modification in the asphalt binder. This study can provide a basis for applying bioasphalt, making road engineering more economical and environmentally friendly.Fuhai WangTuo HuangGongfeng XinMinghao MuQuanjun ShenHindawi LimitedarticleEngineering (General). Civil engineering (General)TA1-2040ENAdvances in Civil Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Fuhai Wang Tuo Huang Gongfeng Xin Minghao Mu Quanjun Shen Study on Conventional and Rheological Properties of Corn Stalk Bioasphalt/PPA Composite Modified Asphalt
description	As a new type of pavement material, bioasphalt has received more and more attention. However, the high-temperature behavior of bioasphalt is poor after blending with asphalt binder. In order to solve this problem and facilitate the waste utilization and resource conservation, the corn stalk bioasphalt/PPA composite modified asphalt was proposed. The conventional performance tests and rheological tests were conducted to evaluate high-temperature and low-temperature behavior. Fourier transform infrared reflection (FTIR) test was undertaken to analyze the mechanism of modified asphalt. The results indicated that blended asphalt penetration and ductility gradually decrease with the PPA content increasing. The softening point and viscosity of the modified asphalt increased, which led to an improvement of blended asphalt’s rigidity. The PPA increased the rutting index of corn stalk bioasphalt/PPA composite modified asphalt. However, bioasphalt had a negative effect on its high-temperature performance. The corn stalk bioasphalt/PPA composite modified asphalt could meet the specification requirement at −18°C considering the creep rate and stiffness modulus, indicating it had outstanding crack resistance. When the PPA and bioasphalt respect to the weight of neat asphalt were 6%–8% and 10%–16%, respectively, the corn stalk bioasphalt/PPA composite modified asphalt performance was optimal. However, shear time and shear rate merely affected the proposed modified asphalt performance. The bioasphalt did not affect the chemical structure of asphalt. However, PPA generated new functional groups (P-O single bond, phosphate (RO)3P = O, and P=O double bond) causing a chemical modification in the asphalt binder. This study can provide a basis for applying bioasphalt, making road engineering more economical and environmentally friendly.
format	article
author	Fuhai Wang Tuo Huang Gongfeng Xin Minghao Mu Quanjun Shen
author_facet	Fuhai Wang Tuo Huang Gongfeng Xin Minghao Mu Quanjun Shen
author_sort	Fuhai Wang
title	Study on Conventional and Rheological Properties of Corn Stalk Bioasphalt/PPA Composite Modified Asphalt
title_short	Study on Conventional and Rheological Properties of Corn Stalk Bioasphalt/PPA Composite Modified Asphalt
title_full	Study on Conventional and Rheological Properties of Corn Stalk Bioasphalt/PPA Composite Modified Asphalt
title_fullStr	Study on Conventional and Rheological Properties of Corn Stalk Bioasphalt/PPA Composite Modified Asphalt
title_full_unstemmed	Study on Conventional and Rheological Properties of Corn Stalk Bioasphalt/PPA Composite Modified Asphalt
title_sort	study on conventional and rheological properties of corn stalk bioasphalt/ppa composite modified asphalt
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/395aa10312d245958254fecdd4e96c2d
work_keys_str_mv	AT fuhaiwang studyonconventionalandrheologicalpropertiesofcornstalkbioasphaltppacompositemodifiedasphalt AT tuohuang studyonconventionalandrheologicalpropertiesofcornstalkbioasphaltppacompositemodifiedasphalt AT gongfengxin studyonconventionalandrheologicalpropertiesofcornstalkbioasphaltppacompositemodifiedasphalt AT minghaomu studyonconventionalandrheologicalpropertiesofcornstalkbioasphaltppacompositemodifiedasphalt AT quanjunshen studyonconventionalandrheologicalpropertiesofcornstalkbioasphaltppacompositemodifiedasphalt
_version_	1718443081869557760

Study on Conventional and Rheological Properties of Corn Stalk Bioasphalt/PPA Composite Modified Asphalt

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