@article{c96227686c304dcca76f493ef50a8b08,
title = "Improvement of asphalt-aggregate adhesion using plant ash byproduct",
abstract = "The adhesion bonding between asphalt and aggregate significantly influences field performance and durability of asphalt pavement. Adhesion promoters are typically used to improve asphalt-aggregate bonding and minimize moisture-related pavement damage, such as cracking and raveling. This study evaluated the effectiveness of plant ash byproduct as adhesion promoter to improve asphalt-aggregate adhesion performance. Three commonly used aggregate types (granite, basic rock, and limestone) and two asphalt binder types were used in laboratory testing. A modified stripping test method was developed to evaluate test results with image analysis and measurement of asphalt film thickness. The contact angle test and scanning electron microscopy (SEM) with energy disperse spectroscopy (EDS) were conducted. Test results showed that plant ash lixivium significantly improved asphalt-aggregate adhesion. Among three aggregate types, granite yielded the worst asphalt-aggregate adhesion for both control and treated specimens. The effectiveness of adhesion promotion varied depending on the type of asphalt or aggregate and temperature. The SEM/EDS observations showed that the mesh-like crystalline was formed at the interface between asphalt binder and aggregate in the treated specimen, which was believed to enhance the interfacial bonding and prevent asphalt film peeling off from aggregate.",
keywords = "Asphalt-aggregate adhesion, Contact angle, Interfacial transition zone, Plant ash lixivium, Stripping test",
author = "Zhuangzhuang Liu and Xiaonan Huang and Aimin Sha and Hao Wang and Jiaqi Chen and Cheng Li",
note = "Funding Information: 6. Conclusions In this study, plant ash lixivium was used to improve adhesion performance of three commonly used agIng rtehgisastetusdfyo,rpalaspnthaaslthmlixixivtuiurmes .waTsouesvedalutoaitme pthroeviem apdrhoevseiomnepnetrofofrimntaenrcfaecoef tahdrheees cioomn,mthoenly conuvseedn tiaogngarlesgtaritpesp ifnogr teasstpwhaalst mmoixdtiufireeds.wTitoh eimvaalgueataen atlhyes isimopf rteosvtermeseunltt so. fThinetmerofadciefi eaddshtersipiopni,n gthe tesctornevsuelnttsioshnoawl setdrippplainntga tsehstl iwxiavsiu mmodcaifnieedffewcittihve ilmy apgreev aennatlypseiesl ionfg teosfta rsepshualtlts.b Tinhdeemr fordomifieadg gsrterigpaptein. g Amteosnt grethsureltesasghgorewgeadte ptylapnets,agsrha nliitxeivyiiuemld ecdatnheewffeocrtsitvaelsyphparlet-vaegngtr epgeaetleinagdhoefs iaosnpfhoarltb obtihndcoenr trforolm anadgtgrereagteadtes.p Aecmimonengs t.hTrheee targegatrmegeantte etfyfepcetsiv, egnreasnsitoef ypilealndteads hthleix wivoiurmst avsapriheadltd-aegpgenredgiantge oandthheesitoynp efor ofbaospthh aclotnantrdolagagnrde gtarteea.ted specimens. The treatment effectiveness of plant ash lixivium varied depTehnedcionngtaocnttahneg tlyepteesotfaansdphSaEltMa/ndE DagSgarneaglaytsei.s were conducted to analyze adhesion work and microstTruhcet ucroenotafcatgagnrgeglea ttee-satspanhdaltSiEnMte/rEfaDcSes a. nTahleysciosnwtaecrtea ncognledtuecstterde vteoalaendaltyhzaet paldahnetsaisohn liwxiovriku mand incmreicarsoesdtrwucotrukreo offaadghgerseigoanteo-afsapshpahlta ilnt-taegrgfarceegsa. tTehien cteornftaaccet, aensgpleec tieasltlyreavteahliegdh thteamt pplearnatt uasrhes l.ixTivhiuem obisnecrrveaatsioendswwoitrhk SoEfMadahnedsEioDnS oinf daiscpahteadlt-tahgagt rthegearetew ienrteercfhaecme,iceaslpienctiearlalyctiaotnshibgehtwteemenpaesrpahtuarletsa.nTdhe agogbresgeravteataioftnesr wthiteha SgEgMre gaantde EwDaSs itnredaicteadtedw tihthatptlhaenrte awsherlei xcihveimumic;atlhinreteercarcytisotnalsl ibneetwperoend uacstpshwalet raend obasgergvreegdaatet tahfeteirn ttehref aacgegorefgaastpeh walatsa ntrdeaatgegdr ewgiathte .pTlahnet satsuhd lyixfiivniduimng; sthprreoev certyhsetapllointeen ptiraoldoufcutssiwngere plaonbtsaersvheeds taotetnhhe ainncteertfhaecem oofisatsuprhearletsaisntdanacgegorefgaaspteh.aTlthme sixtutudryesfiinndpinragcstipcraolvaeppthliec aptiootnens.tial of using plant ashes to enhance the moisture resistance of asphalt mixtures in practical applications. Author Contributions: Investigation, X.H. & Z.L.; Conceptualization, A.S. and H.W.; Methodology & Formal AnAaluytshiso,rXC.Hon. tarnibduZti.Lo.n;sD: IantaveCsutirgaattioionn,,X X.H. H.;uWanrigti&ng Z-O. Lriigui.n; CaloDncreapfttuParelipzaartaiotino,n A, .Z S.Lh.aa anndd XH.H. W.; aWnrgi;t iMnge-tRheovdioelwogy & Formal Analysis, X. Huang and Z. Liu; Data Curation, X. Huang; Writing-Original Draft Preparation, Z .Liu Funding: This study was partially funded by the National Key R&D Program of China (2018YFB1600200) and National Natural Science Foundation of China (NSFC, No. 51708045). Funding: This study was partially funded by the National Key R&D Program of China (2018YFB1600200) and Acknowledgments: The authors would like to acknowledge Sha Yaohua and Zou Xiaolong for their assistance in laboratory experiments. Acknowledgments: The authors would like to acknowledge Sha Yaohua and Zou Xiaolong for their assistance Conflicts of Interest: The authors declare no conflict of interest. The funders had no role in the design of the study;in laboratory experiments. in the collection, analyses, or interpretation of data; in the writing of the manuscript, and in the decision to Publisher Copyright: {\textcopyright} 2019 by the authors.",
year = "2019",
month = feb,
day = "18",
doi = "10.3390/ma12040605",
language = "English (US)",
volume = "12",
journal = "Materials",
issn = "1996-1944",
publisher = "MDPI AG",
number = "4",
}