dc.contributor.author |
Rust, FC
|
|
dc.contributor.author |
Servas, VP
|
|
dc.contributor.author |
Van Der Walt, N
|
|
dc.date.accessioned |
2007-11-28T13:02:05Z |
|
dc.date.available |
2007-11-28T13:02:05Z |
|
dc.date.issued |
1989-06 |
|
dc.identifier.citation |
Rust, FC, Servas, P and Van Der Walt, N. 1989. Performance of various modified binders in road trials and under simulated crack movement in the laboratory. 5th Conference on Asphalt Pavements for Southern Africa, Swaziland, 5-9 June 1989, pp 56-67 |
en |
dc.identifier.isbn |
620143959 |
|
dc.identifier.uri |
http://hdl.handle.net/10204/1719
|
|
dc.description |
1989: 5th Conference on Asphalt Pavements for Southern Africa, Swaziland |
en |
dc.description.abstract |
The use of bitumen-rubbers and other modified binders to inhibit reflection cracking, highlighted the need to investigate the phenomena of load-associated crack movement and crack reflection and the evaluation of the field performance of modified binders. The development of the Crack-activity Meter (CAM)and its use with the Heavy Vehicle Simulator (HVS) has led to an improved understanding of crack movement behaviour. The N3 trial sections, which were built to determine the field performance of various modified binders under normal traffic, as well as initial rsults from this experiment are discussed in this paper. To date, fatigue testing under simulated crack movement in the laboratory was conducted on four of the binders used in the N3 trials. Initial results from this work, including fatigue curves of the four materials, are reported. Guidelines are suggested for the identification of sections on pavements where crack reflection problems can be expected. Models were also developed to predict crack movement from a knowledge of block sizes and structural parameters such as basin of deflection and an example of this is shown. It is also shown that these models can be used to predict the decrease in crack movement due to the overlaying of a pavement with a structural layer. It is concluded that the measurement of an analysis of crack movement can aid rehabilitation design. |
en |
dc.language.iso |
en |
en |
dc.publisher |
Asphalt Pavements for Southern Africa |
en |
dc.subject |
Cracks |
en |
dc.subject |
Overlays |
en |
dc.subject |
Seals |
en |
dc.subject |
Rainwater |
en |
dc.subject |
Potholing |
en |
dc.subject |
Deformation |
en |
dc.title |
Performance of various modified binders in road trials and under simulated crack movement in the laboratory |
en |
dc.type |
Conference Presentation |
en |
dc.identifier.apacitation |
Rust, F., Servas, V., & Van Der Walt, N. (1989). Performance of various modified binders in road trials and under simulated crack movement in the laboratory. Asphalt Pavements for Southern Africa. http://hdl.handle.net/10204/1719 |
en_ZA |
dc.identifier.chicagocitation |
Rust, FC, VP Servas, and N Van Der Walt. "Performance of various modified binders in road trials and under simulated crack movement in the laboratory." (1989): http://hdl.handle.net/10204/1719 |
en_ZA |
dc.identifier.vancouvercitation |
Rust F, Servas V, Van Der Walt N, Performance of various modified binders in road trials and under simulated crack movement in the laboratory; Asphalt Pavements for Southern Africa; 1989. http://hdl.handle.net/10204/1719 . |
en_ZA |
dc.identifier.ris |
TY - Conference Presentation
AU - Rust, FC
AU - Servas, VP
AU - Van Der Walt, N
AB - The use of bitumen-rubbers and other modified binders to inhibit reflection cracking, highlighted the need to investigate the phenomena of load-associated crack movement and crack reflection and the evaluation of the field performance of modified binders. The development of the Crack-activity Meter (CAM)and its use with the Heavy Vehicle Simulator (HVS) has led to an improved understanding of crack movement behaviour. The N3 trial sections, which were built to determine the field performance of various modified binders under normal traffic, as well as initial rsults from this experiment are discussed in this paper. To date, fatigue testing under simulated crack movement in the laboratory was conducted on four of the binders used in the N3 trials. Initial results from this work, including fatigue curves of the four materials, are reported. Guidelines are suggested for the identification of sections on pavements where crack reflection problems can be expected. Models were also developed to predict crack movement from a knowledge of block sizes and structural parameters such as basin of deflection and an example of this is shown. It is also shown that these models can be used to predict the decrease in crack movement due to the overlaying of a pavement with a structural layer. It is concluded that the measurement of an analysis of crack movement can aid rehabilitation design.
DA - 1989-06
DB - ResearchSpace
DP - CSIR
KW - Cracks
KW - Overlays
KW - Seals
KW - Rainwater
KW - Potholing
KW - Deformation
LK - https://researchspace.csir.co.za
PY - 1989
SM - 620143959
T1 - Performance of various modified binders in road trials and under simulated crack movement in the laboratory
TI - Performance of various modified binders in road trials and under simulated crack movement in the laboratory
UR - http://hdl.handle.net/10204/1719
ER -
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en_ZA |