ISSN: 1945-7553
CODEN: JTEVAB
Published Online: 7 July 2009
Page Count: 7

Study on Low-Temperature Cracking Performance of Asphalt Mortar Modified by an Aluminate Coupling Agent

Liu, Shu-tang
Shandong Univ., Jinan,

Hou, Feng
Shandong Univ., Jinan,

Cao, Wei-dong
ShandongUniv., Jinan,

Liu, Ying
Shandong Univ., Jinan,

(Received 19 December 2008; accepted 5 June 2009)

Abstract

The low-temperature performance properties of asphalt mortar modified by an aluminate coupling agent (ACA) were investigated and are reported in this paper. An orthogonal experiment design method was used, and the creep stiffness and m-value were adopted as the indicators to investigate the modifier effects of the filler-asphalt ratio, ACA, and stearic acid on the low-temperature performance of asphalt mortar. The influence of other factors on the high-temperature, anti-rutting performance and intermediate-temperature fatigue performance of asphalt mortar was also evaluated. Analysis indicated that ACA could improve significantly the low-temperature performance and intermediate-temperature fatigue performance of asphalt mortar but reduced the high-temperature performance. Asphalt mortar modified by a moderate filler-asphalt ratio, a significant amount of ACA, and stearic acid showed better low-temperature performance properties.

Keywords:
asphalt mortar, aluminate coupling agent (ACA), stearic acid, filler-asphalt ratio, performance

Paper ID: JTE000319
DOI: 10.1520/JTE000319
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