TY - CHAP
T1 - Low-temperature characterization of hot-poured crack sealant by crack sealant direct tensile tester
AU - Al-Qadi, I. L.
AU - Yang, S. H.
AU - Dessouky, S.
AU - Masson, J. F.
PY - 2007
Y1 - 2007
N2 - 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.
AB - 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.
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U2 - 10.3141/1991-13
DO - 10.3141/1991-13
M3 - Chapter
AN - SCOPUS:38349181455
SN - 9780309104166
SP - 109
EP - 118
BT - Management and Maintainance of the Infrastructure
PB - National Research Council
ER -