Sains Malaysiana 42(6)(2013):
783–793
Correction of Compliance Errors in the Dynamic Shear Modulus
of Bituminous Binders Data
(Pembetulan Ralat Pematuhan dalam Data Modulus Ricih Dinamik
Pengikat Berbitumen)
Jiantao Wu
College of Civil Engineering and Transportation
Hohai University, 1 Xikang Road, Nanjing,
Jiangsu Province
210098 China
Nur Izzi Md. Yusoff*
Department of Civil and Structural Engineering, Faculty
of Engineering and Built Environment
Universiti Kebangsaan Malaysia, 43600 Bangi,
Selangor, Malaysia
Fauzan Mohd Jakarni
Department of Civil Engineering, Universiti
Putra Malaysia, 43400 Serdang, Selangor
Mohd Rosli Hainin
Faculty of Civil Engineering and
Construction Research Alliance, Universiti Teknologi Malaysia
81310 Skudai, Johor, Malaysia
Diserahkan: 19 Jun 2012/Diterima: 15 Oktober 2012
ABSTRACT
The dynamic shear rheometer (DSR) is one of the most
complex and powerful instruments currently used to characterise the linear
viscoelastic (LVE)
rheological properties of bituminous binders. However, the DSR also has its
limitations in that the measured complex modulus data are exposed to errors,
known as compliance (testing) errors, particularly at low temperatures and/or
high frequencies. This study was conducted to investigate the validity of
equations developed by Schröter and associates on complex modulus data
collected using the DSR. The equations used were originally
developed based on the calibration of the advanced rheometric expanse system (ARES)
rheometer. It was found that those equations are able to satisfactorily correct
the data on unmodified bitumens and unaged bitumen-filler mastics, including
unaged and aged samples. Similar results were also observed for storage and
loss moduli master curves. Finally, the 2S2P1D Model was used to calibrate the
corrected complex moduli data and it was found that the model satisfactorily
simulates the rheological properties of tested samples.
Keywords: Bitumen-filler mastic; compliance errors; linear
viscoelastic; modelling; unmodified bitumen
ABSTRAK
Reometer ricih dinamik (DSR) adalah salah satu
alat yang rumit dan berkuasa yang kini digunakan untuk mencirikan sifat reologi
likat kenyal lelurus (LVE) bahan pengikat berbitumen. Walau bagaimanapun, DSR juga
mempunyai batasan dengan data modulus kompleks yang diukur terdedah kepada ralat,
yang dikenali sebagai kesilapan pematuhan (ujian), terutamanya pada suhu rendah
dan/atau frekuensi tinggi. Kajian ini telah dijalankan
untuk menyiasat pengesahan penggunaan persamaan yang dibangunkan oleh Schröter
dan sekutu terhadap data kompleks modulus yang dikumpul menggunakan alat DSR. Persamaan yang digunakan pada asalnya dibangunkan berdasarkan penentukuran
reometer advanced rheometric expanse
system (ARES). Didapati bahawa persamaan tersebut dapat membetulkan
data-data bitumen tidak terubah suai dan mastik-pengisi bitumen secara
memuaskan, termasuk sampel yang tidak dan mengalami penuaan. Keputusan
yang sama juga diperhatikan terhadap lengkuk utama
modulus penyimpanan dan modulus kehilangan. Akhirnya, Model
2S2P1D telah digunakan untuk tujuan penentukuran data kompleks modulus yang
diperbetulkan dan didapati bahawa model ini dapat mensimulasi sifat reologi
sampel yang diuji dengan memuaskan.
Kata kunci: Bitumen tidak
diubah suai; kesilapan pematuhan; likat kenyal lelurus; mastik-terisi bitumen;
permodelan
RUJUKAN
Airey, G.D. 2002. Use of black diagrams to
identify inconsistencies in rheological data. Road Materials and Pavement
Design 3(4): 403-424.
Airey, G.D. & Hunter, A.E. 2003. Dynamic
mechanical testing of bitumen: Sample preparation methods. Proceedings of
the Institution of Civil Engineers–Transport 156(TR 2): 85-92.
Choi, K.Y. 2005. Development
of the saturation ageing tensile stiffness (SATS) test for high modulus base
materials. PhD Thesis, the University of Nottingham, United Kingdom (unpublished).
Christensen, D.W. & Anderson, D.A. 1992. Interpretation of dynamic mechanical test data for paving grade
asphalt. Journal of the Association of Asphalt
Paving Technologists 61: 67-116.
Delaporte, B., Di
Benedetto, H., Chaverot, P. & Gauthier, G. 2007. Linear viscoelastic
properties of bituminous materials; from binders to mastics. Journal of Association of Asphalt Paving Technologists 76:
455-494.
Hutcheson, S.A. & McKenna, G.B. 2008. The
measurement of mechanical properties of glycerol, m-toluidine and
sucrose benzoate under consideration of corrected rheometer compliance; An in-depth study and review. The Journal of Chemical
Physics 129: 074502-1-074502-14.
Liao, M.C. 2007. Small and large strain
rheological and fatigue characterisation of bitumen-filler mastics. PhD Thesis,
the University of Nottingham, United Kingdom (unpublished).
Lu, X., Isacsson, U. &
Ekblad, J. 1998. Low-temperature properties
of styrene-butadiene-styrene polymer modified bitumens. Construction and
Building Materials 12: 405-414.
Olard, F. & Di
Benedetto, H. 2003. General ‘2S2P1D’ Model and relation between the linear viscoelastic
behaviours of bituminous binders and mixes. Road Materials and
Pavement Design 4(2): 185-224.
Petersen, J.C., Robertson, J.F., Branthaver,
J.F., Harnsberger, P.M., Duvall, J.J. & Kim, S.S. 1994. Binder
characterization and evaluation volume 4: Test methods. SHRP
A–370, Strategic Highway Research Program, Ntional Research Council,
Washington, D.C.
Schröter, K., Hutchenson, S.A., Shi, X. &
McKenna, G.B. 2006. Dynamic shear modulus of glycerol: Corrections due to
instrument compliance. The Journal of Chemical Physics 125:
214507-1-214507-4.
Sui, C. 2008. Determination of low-temperature properties of
asphalt using dynamic shear rheology. Petersen Asphalt Research Conference, Laramie, Wyoming.
Sui, C., Farrar, M.J.,
Tuminello, W.H. & Turner, T.F. 2009. Anew technique for measuring low-temperature
properties of asphalt binders with small amounts of materials. Paper
submitted to the Annual Meeting of The Transportation Research Board,
January 2010.
Wu, J. 2009. The influence of
mineral aggregates and binder volumetrics on bitumen ageing. PhD Thesis,
the University of Nottingham, United Kingdom (unpublished).
*Pengarang
untuk surat-menyurat; email: izzi@eng.ukm.my
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