| Download | - View accepted manuscript: Cooling rates in hot-poured bituminous sealants (PDF, 638 KiB)
|
|---|
| Author | Search for: Collins, P.1; Search for: Masson, J-F.; Search for: Al-Qadi, I. L. |
|---|
| Affiliation | - National Research Council of Canada. NRC Institute for Research in Construction
|
|---|
| Format | Text, Article |
|---|
| Subject | pavement, maintenance, rehabilitation, cracking, repair, sealants, installation; Roads/Pavement; Pavements |
|---|
| Abstract | The performance of bituminous sealants applied to cracks and joints is partly governed by installation. An important installation parameter that has yet to be investigated is the sealant rate of cooling after it is poured hot. Cooling rates affect the time during which traffic must be re-routed, sealant microstructure and rheology, and the adhesion at the sealant/hot-mix asphalt (HMA) interface. In an effort to provide data on sealant cooling rates, the temperature change in three sealants was measured in the field and in the laboratory. The results indicated that sealant bulk temperatures were >50°C lower than the sealant application temperature, typically 180°C, almost immediately after pouring and that sealants bulk temperatures reached 40°C or less within 15 min. This suggests that traffic could be re-routed for less time than the standard 30 min. The instantaneous sealant temperature at the sealant-substrate interface was also measured to be below 100°C immediately after the pouring of the sealant. This emphasizes the need for sealants with good wetting propensity to maximize the potential for proper adhesion. |
|---|
| Publication date | 2006-01-22 |
|---|
| In | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| NRC number | NRCC 48381
NRC-IRC-17857 |
|---|
| NPARC number | 20377545 |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | a793cf83-a153-4005-815f-f72ab4bcc8ce |
|---|
| Record created | 2012-07-24 |
|---|
| Record modified | 2020-04-22 |
|---|
