Abstract
The current specifications for selecting crack sealants correlate poorly with actual field performance. To address this issue and assist in predicting the low-temperature properties of hot-poured bituminous crack sealants, a modified direct tensile tester method has been developed. Sample geometry is modified to accommodate testing sealants. A sensitivity analysis considering various loading rates, sample lengths, and cross-section areas was conducted to define both optimized specimen geometry and testing protocol. Two types of sealants, having a wide range of rheological behaviors (one polymer-modified and one having crumb rubber), were tested at low temperature. Results showed that the rich polymer-modified sealant has a high resistance to failure compared with the sealant with crumb rubber-modified. Each sealant was tested at the lowest corresponding expected service temperature. A performance parameter, strain energy density, was proposed to differentiate crack sealant material in the laboratory.
Original language | English (US) |
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Title of host publication | Management and Maintainance of the Infrastructure |
Publisher | National Research Council |
Pages | 109-118 |
Number of pages | 10 |
Edition | 1991 |
ISBN (Print) | 9780309104166 |
DOIs | |
State | Published - 2007 |
ASJC Scopus subject areas
- Civil and Structural Engineering
- Mechanical Engineering