Mechanism on Hot Mix Asphalt Construction under Low Temperature Condition
PENG Jian kang,DONG Rui kun and YOU Hong
DOI:10.11835/j.issn.1674-4764.2009.04.013
Received ,Revised , Accepted , Available online July 01, 2015
Volume ,2009,Pages 66-69
- Abstract
In order to explore the mechanism of low temperature construction and influence of additives on the high temperature performance of the asphalt concrete pavement, the viscosity at 110 ℃, 120 ℃ and 135 ℃ and softening point were measured for SBS modified asphalt and base asphalt with different additive content of ADZ, ADW or ADS, respectively. The additives can reduce viscosity of asphalt and realize construction of asphalt concrete in low temperature. The experimental results showed that: To some extent, three kinds of additives can reduce the viscosity of base asphalt or SBS modified bitumen. In contrast, at lower temperature (120 ℃or 110 ℃), the viscosity of SBS modified asphalt and base asphalt with ADW or ADS were obvious smaller than that of ADZ. With the increase of the three types of additive content, the softening points of base asphalt also increased. However, the softening points of SBS modified asphalt with lower additive content of ADZ, ADW or ADS were smaller than those without ADZ, ADW or ADS.