Asphalt modification using acid treated waste oil fly ash

M. Anwar Parvez; Hamad I. Al-Abdul Wahhab; Reyad A. Shawabkeh; Ibnelwaleed A. Hussein

doi:10.1016/j.conbuildmat.2014.07.045

Asphalt modification using acid treated waste oil fly ash

M. Anwar Parvez
, Hamad I. Al-Abdul Wahhab
, Reyad A. Shawabkeh
, Ibnelwaleed A. Hussein^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

Oil fly ash (OFA) is generated in large quantities from power generation plants through combustion of fuel oil. Waste OFA contains more than 80% carbon and can be used to improve asphalt performance. H₂SO₄ and HNO₃ acids were used to functionalize OFA with carboxylic group (COOH) to improve its dispersion and chemical bonding with asphalt. Thermo gravimetric analysis (TGA), FTIR and combined SEM/EDS techniques were used to characterize as-received and treated OFA. Asphalt modification with treated OFA showed better results than that of untreated OFA. The treated OFA were blended with base asphalt and tested for rheological properties of pure and modified asphalt binders. OFA were used at 2-8% by weight of asphalt binder. Melt state rheology was investigated in ARES rheometer using temperature sweep, dynamic shear and steady shear rheological measurements. Incorporation of OFACOOH in the modified asphalt binders showed improvement in binder properties as investigated through steady and dynamic shear rheology. OFACOOH modification reduced temperature susceptibility of modified asphalt binder and increased the upper grading (performance) temperature. The rutting parameter G*/sin δ increased linearly with OFACOOH content of asphalt binder. Activation energy was found to decrease with OFACOOH content which indicated better resistance to low temperature cracking of the modified binder. Asphalt modification with treated OFA proved that acid treatment of OFA has enhanced the properties of asphalt mixes.

Original language	English
Pages (from-to)	201-209
Number of pages	9
Journal	Construction and Building Materials
Volume	70
DOIs	https://doi.org/10.1016/j.conbuildmat.2014.07.045
State	Published - 15 Nov 2014

Bibliographical note

Funding Information:
The authors thank King Abdul Aziz City of Science and Technology (KACST) for its support for this research through project # AR-29-101. The authors are thankful KFUPM for supporting this research.

Keywords

Asphalt modification
Oil fly ash
Performance grading
Rheology

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
General Materials Science

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10.1016/j.conbuildmat.2014.07.045

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title = "Asphalt modification using acid treated waste oil fly ash",

abstract = "Oil fly ash (OFA) is generated in large quantities from power generation plants through combustion of fuel oil. Waste OFA contains more than 80\% carbon and can be used to improve asphalt performance. H2SO4 and HNO3 acids were used to functionalize OFA with carboxylic group (COOH) to improve its dispersion and chemical bonding with asphalt. Thermo gravimetric analysis (TGA), FTIR and combined SEM/EDS techniques were used to characterize as-received and treated OFA. Asphalt modification with treated OFA showed better results than that of untreated OFA. The treated OFA were blended with base asphalt and tested for rheological properties of pure and modified asphalt binders. OFA were used at 2-8\% by weight of asphalt binder. Melt state rheology was investigated in ARES rheometer using temperature sweep, dynamic shear and steady shear rheological measurements. Incorporation of OFACOOH in the modified asphalt binders showed improvement in binder properties as investigated through steady and dynamic shear rheology. OFACOOH modification reduced temperature susceptibility of modified asphalt binder and increased the upper grading (performance) temperature. The rutting parameter G*/sin δ increased linearly with OFACOOH content of asphalt binder. Activation energy was found to decrease with OFACOOH content which indicated better resistance to low temperature cracking of the modified binder. Asphalt modification with treated OFA proved that acid treatment of OFA has enhanced the properties of asphalt mixes.",

keywords = "Asphalt modification, Oil fly ash, Performance grading, Rheology",

author = "\{Anwar Parvez\}, M. and \{Al-Abdul Wahhab\}, \{Hamad I.\} and Shawabkeh, \{Reyad A.\} and Hussein, \{Ibnelwaleed A.\}",

note = "Funding Information: The authors thank King Abdul Aziz City of Science and Technology (KACST) for its support for this research through project \# AR-29-101. The authors are thankful KFUPM for supporting this research.",

year = "2014",

month = nov,

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doi = "10.1016/j.conbuildmat.2014.07.045",

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journal = "Construction and Building Materials",

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AU - Anwar Parvez, M.

AU - Al-Abdul Wahhab, Hamad I.

AU - Shawabkeh, Reyad A.

AU - Hussein, Ibnelwaleed A.

N1 - Funding Information: The authors thank King Abdul Aziz City of Science and Technology (KACST) for its support for this research through project # AR-29-101. The authors are thankful KFUPM for supporting this research.

PY - 2014/11/15

Y1 - 2014/11/15

N2 - Oil fly ash (OFA) is generated in large quantities from power generation plants through combustion of fuel oil. Waste OFA contains more than 80% carbon and can be used to improve asphalt performance. H2SO4 and HNO3 acids were used to functionalize OFA with carboxylic group (COOH) to improve its dispersion and chemical bonding with asphalt. Thermo gravimetric analysis (TGA), FTIR and combined SEM/EDS techniques were used to characterize as-received and treated OFA. Asphalt modification with treated OFA showed better results than that of untreated OFA. The treated OFA were blended with base asphalt and tested for rheological properties of pure and modified asphalt binders. OFA were used at 2-8% by weight of asphalt binder. Melt state rheology was investigated in ARES rheometer using temperature sweep, dynamic shear and steady shear rheological measurements. Incorporation of OFACOOH in the modified asphalt binders showed improvement in binder properties as investigated through steady and dynamic shear rheology. OFACOOH modification reduced temperature susceptibility of modified asphalt binder and increased the upper grading (performance) temperature. The rutting parameter G*/sin δ increased linearly with OFACOOH content of asphalt binder. Activation energy was found to decrease with OFACOOH content which indicated better resistance to low temperature cracking of the modified binder. Asphalt modification with treated OFA proved that acid treatment of OFA has enhanced the properties of asphalt mixes.

AB - Oil fly ash (OFA) is generated in large quantities from power generation plants through combustion of fuel oil. Waste OFA contains more than 80% carbon and can be used to improve asphalt performance. H2SO4 and HNO3 acids were used to functionalize OFA with carboxylic group (COOH) to improve its dispersion and chemical bonding with asphalt. Thermo gravimetric analysis (TGA), FTIR and combined SEM/EDS techniques were used to characterize as-received and treated OFA. Asphalt modification with treated OFA showed better results than that of untreated OFA. The treated OFA were blended with base asphalt and tested for rheological properties of pure and modified asphalt binders. OFA were used at 2-8% by weight of asphalt binder. Melt state rheology was investigated in ARES rheometer using temperature sweep, dynamic shear and steady shear rheological measurements. Incorporation of OFACOOH in the modified asphalt binders showed improvement in binder properties as investigated through steady and dynamic shear rheology. OFACOOH modification reduced temperature susceptibility of modified asphalt binder and increased the upper grading (performance) temperature. The rutting parameter G*/sin δ increased linearly with OFACOOH content of asphalt binder. Activation energy was found to decrease with OFACOOH content which indicated better resistance to low temperature cracking of the modified binder. Asphalt modification with treated OFA proved that acid treatment of OFA has enhanced the properties of asphalt mixes.

KW - Asphalt modification

KW - Oil fly ash

KW - Performance grading

KW - Rheology

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DO - 10.1016/j.conbuildmat.2014.07.045

M3 - Article

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VL - 70

SP - 201

EP - 209

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Asphalt modification using acid treated waste oil fly ash

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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