A study on effects of hydrated lime on moisture susceptibility of SMA mixtures

Kyung-Ha Lee

doi:10.22702/jkai.2019.9.2.011

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2019 Vol.9, Issue 2 Preview Page Next Page

Scientific Paper

A study on effects of hydrated lime on moisture susceptibility of SMA mixtures 소석회를 첨가한 SMA의 수분 저항 특성 분석

31 December 2019. pp. 167-175

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Abstract

The objective of this study is to evaluate effects of hydrated lime on SMA mixtures as an anti-stripping agent. The SMA mixtures containing hydrated lime were evaluated for asphalt mixture properties through indirect tensile strength, tensile strength ratio (TSR), and dynamic immersion test. The results of the IDT test revealed that the indirect tensile strength of mixtures with hydrated lime is 1.2~1.5 times greater than those with anti-stripping agent. And hydrated lime has more influence on strength characteristics of modified asphalt mixtures than those of straight asphalt. The results of TSR test showed that the mixtures with hydrated lime and anti-stripping agent are 1.3~1.5 times more resistant to moisture damage than control mixtures. The results of dynamic immersion test showed that the coverage rate of asphalt in the mixture with hydrated lime and anti-stripping agent is 2.9~3.1 times greater than that of control mixtures. It is considered that the improved moisture resistance of asphalt mixtures with the use of hydrated lime can reduce incidences of various pavement damages caused by stripping.

Keywords

Hydrated lime

SMA

Anti-stripping agent

TSR

Dynamic immersion test

References

AASHTO (2011). T 283-07 ; Standard method of test for resistance of compacted asphalt mixtures to moisture- induced damage, American Association of State and Highway Transportation Officials, p. 8.

Al-Suhaibani, A., Al-Mudaiheem, J. and Al-Fozan, F. (1992). Effect of filler type and content on properties of asphalt concrete mixes, in SPT 1147 effects of aggregates and mineral fillers on asphalt mixtures performance, ed. By R. C. Meininger, ASTM, Philadelphia PA, pp. 107-130.

10.1520/STP24214S

ASTM (1988). Standard test method for effect of moisture on asphalt concrete paving mixtures, ASTM Designation : D4867-88.

Bari, J. and Witczak, M. W. (2005). "Evaluation of the effect of lime modification on the dynamic modulus stiffness of hot-mix asphalt use with the new mechanistic-empirical pavement design guide," Transportation Research Record, 1929, pp. 10-19.

10.1177/0361198105192900102

Kennedy, T. W. and Ping, W. V. (1991). "Evaluation of effectiveness of antistripping additives in protecting asphalt mixtures from moisture damage," Journal of the Association of Asphalt Paving Technologists, from the Proceedings of Technical Sessions, Seattle, WA, Vol. 60.

Ping, W. V. and Kennedy, T. W. (1991). Evaluation of stripping and moisture damage in asphalt pavements treated with lime and anti-stripping agents, Center for Transportation Research, Research Report No. 441-1.

Shahrour, A. M. and Salouke, G. B. (1992). Effect of quality and quantity of locally produced filler (passing sieve no. 200) on asphaltic mixtures in dubai, in effect of aggregates and mineral fillers on asphalt mixtures performance, ASTM STP 1147, ed. by R. C. Meininger, American Society for Testing and Material, Philadelphia, USA.

Information

Publisher :KOREAN ASPHALT INSTITUTE
Publisher(Ko) :한국아스팔트학회
Journal Title :Journal of the Korean Asphalt Institute
Journal Title(Ko) :한국아스팔트학회지
Volume : 9
No :2
Pages :167-175
Received Date : 2019-12-10
Revised Date : 2019-12-29
Accepted Date : 2019-12-30
DOI :https://doi.org/10.22702/jkai.2019.9.2.011

Journal of the Korean Asphalt Institute ISSN:2234-0785(Print) 2635-9553(Online) 한국아스팔트학회지

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