Effects of Proportion of Buton Rock Asphalt on Performance of Modified Asphalt Mixture with Wet Method

ZENG Menglan, CHEN Wei, ZHU Yangui, LIANG Hengguo

Abstract

In order to investigate the effect of proportion of buton rock asphalt on the performance of modified asphalt mixture with wet method,Penetration 70 Grade A petroleum asphalt was used as base asphalt for preparing the modified asphalt binder containing rock asphalt up to 40% of the base asphalt. Limestone aggregate was used in designing the AC-20C asphalt mixture of various percentages of rock asphalt by using Marshall method. Laboratory tests were carried out to determine the properties of the asphalt mixture modified with Buton rock asphalt. These properties include dynamic stability from rutting test, retained Marshall stability from immersion Marshall test, tensile strength ratio from freeze-thaw indirect tension test, failure strain from low temperature flexural test, water permeability coefficient from permeability test, compressive resilient moduli from compression tests at 20 ℃ and 15 ℃, and tensile strength from indirect tension test at 15 ℃. The test results and analyses indicate that with the increase of rock asphalt percentage,the high temperature rutting resistance, moisture damage resistance,permeability resistance,stiffness, and strength of the modified asphalt mixture improve gradually to varying degrees.On the other hand,with the increase of rock asphalt percentage,the low temperature cracking resistance of the modified asphalt mixture improves to a peak value and then falls back slightly.The recommended maximum percentage of Buton rock asphalt for paving asphalt mixture is 30% of the base asphalt.

 

Keywords: asphalt mixture,  modified asphalt,  Buton rock asphalt,  wet method,  performance


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Editorial department of China journal of highway aтв transport. Re-view on China's road engineering researeh:2013 [J].China Journal of Highway and Transport ,2013.26( 3 ):7-10. ( In Chinese)

JI C Z.ZHU H Q.HE N D.et al. Development of home-made natural asphalt modifier[J]. Journal of Highway and Transportation Re-search and Development.2002,19(6): 25-27. (In Chinese)

ZHA X D,TONG L. Research on properties of Buton rock asphalt modified asphalt [J]. Journal of Changsha Communications University .2010,23(4):28-32.(In Chinese)

SUO Z,WONG W G. Analysis of fatigue crack growth behavior in asphalt concrete materials in wearing course [J]. Construction and Building aterials,2009,23(1):462-468.

AFLAKI S,TABATABAEE N. Proposals for modification of Iranian bitumen to meet the climatic requirements of Iran [J].Construction and Building Materials,2009,23( 6):2141-2150.

AMERI M.MANSOURIAN A,ASHANI S S,et al. Technical study on the Iranian gilsonite as an additive for modification of asphalt binders used in pavement construction [J]. Construction and Building Materials,2011,25(3 ):1379-1387.2014:9-12.

ZHU T. Evaluating performance of Buton rock asphalt modified asphalt binder [D]. Changsha: College of Civil Engineering, Hunan University ,2014:9-12. (In Chinese)

ZENG M L. ZHU Y G. TIAN W,et al. Experimental study on performance of European rock asphalt modified asphalt mixture [J]. Journal of Hunan University (Natural Sciences) .2017,44 (7): 156-161. (In Chinese)

ZENG M L.ZHAO Y. PAN H Z,et al. An experimental study on performance of European rock asphalt modified asphalt binder[j]. Journal of Hunan University (Natural Sciences).2016,43 (5): 125-130.(In Chinese)

JTG F40-2004 Technical specifications for construction of highway asphalt pavements [S]. Beijing: China Communications Press, 2004:8-31.(In Chinese)

JT/T 860.5-2014 Modifier for asphalt mixture - part 5: natural asphalt [S]. Beijing: China Communications Press,2014:1-2. (In Chinese)

HUANG W T. Research on characteristic behavior for North American rock asphalt and asphalt mixtures [I)]. Guangzhou: School of Civil Engineering and Transportation, South China University of Technology ,2014:76-78.(In Chinese)


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