dc.contributor.author |
George, Theresa B
|
|
dc.contributor.author |
Anochie-Boateng, Joseph
|
|
dc.contributor.author |
Jenkins, KJ
|
|
dc.date.accessioned |
2021-02-15T10:07:02Z |
|
dc.date.available |
2021-02-15T10:07:02Z |
|
dc.date.issued |
2020-09 |
|
dc.identifier.citation |
George, T.B., Anochie-Boateng, J.K. & Jenkins, K. 2020. Laboratory performance and modelling behaviour of hot-mix asphalt with recycled crushed glass. <i>Journal of the South African Institution of Civil Engineering, 62(3).</i> http://hdl.handle.net/10204/11763 |
en_ZA |
dc.identifier.issn |
2309-8775 |
|
dc.identifier.issn |
1021-2019 |
|
dc.identifier.uri |
http://hdl.handle.net/10204/11763
|
|
dc.description.abstract |
In South Africa research is currently under way to determine the suitability of using locally available recycled crushed glass as a partial fine aggregate substitute in the production of asphalt mixes. This paper characterises the laboratory performance of a dense-graded asphalt wearing course mix consisting of 15% recycled crushed glass. The influence of selected antistripping additives on moisture susceptibility was specifically assessed as a variable in the performance evaluation of the glass-asphalt mix as follows: (a) the effect of 1% hydrated lime, (b) the effect of 0.5% liquid antistripping additive, and (c) the effect without the addition of antistripping additive. The effect of these variables on the moisture susceptibility of the glass-asphalt mix was evaluated using the tensile strength ratio parameter supported with a microscopic imaging analysis. Additionally, the stiffness and permanent deformation properties of the glass-asphalt mix that demonstrated optimum resistance to moisture damage was compared to the same mix without crushed glass. The performance properties were evaluated using the Huet-Sayegh model and a polynomial model respectively, which were used particularly to develop performance characterisation models for the glass-asphalt mix. The findings of this study revealed that an anti-stripping additive is essential to meet moisture susceptibility criteria and alleviate moisture damage in dense-graded glass-asphalt mixes. In particular, moisture susceptibility was improved using hydrated lime rather than the liquid antistripping additive. Furthermore, the selected constitutive models were able to effectively characterise the laboratory performance of both mixes, with the glass-asphalt mix demonstrating improved resistance to permanent deformation when compared with the conventional asphalt mix. |
en_US |
dc.format |
Fulltext |
en_US |
dc.language.iso |
en |
en_US |
dc.relation.uri |
http://dx.doi.org/10.17159/2309-8775/2020/v62n3a2 |
en_US |
dc.relation.uri |
http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S1021-20192020000300002&lng=en&nrm=iso |
en_US |
dc.source |
Journal of the South African Institution of Civil Engineering, 62(3) |
en_US |
dc.subject |
Glass-asphalt |
en_US |
dc.subject |
Moisture susceptibility |
en_US |
dc.subject |
Dynamic modulus |
en_US |
dc.subject |
Permanent deformation |
en_US |
dc.subject |
Constitutive modelling |
en_US |
dc.title |
Laboratory performance and modelling behaviour of hot-mix asphalt with recycled crushed glass |
en_US |
dc.type |
Article |
en_US |
dc.description.pages |
10-22 |
en_US |
dc.description.note |
Licensed under a Creative Commons Attribution License |
en_US |
dc.description.cluster |
Smart Mobility |
en_US |
dc.description.impactarea |
Pavement Design and Construction |
en_US |
dc.identifier.apacitation |
George, T. B., Anochie-Boateng, J. K., & Jenkins, K. (2020). Laboratory performance and modelling behaviour of hot-mix asphalt with recycled crushed glass. <i>Journal of the South African Institution of Civil Engineering, 62(3)</i>, http://hdl.handle.net/10204/11763 |
en_ZA |
dc.identifier.chicagocitation |
George, Theresa B, Joseph K Anochie-Boateng, and KJ Jenkins "Laboratory performance and modelling behaviour of hot-mix asphalt with recycled crushed glass." <i>Journal of the South African Institution of Civil Engineering, 62(3)</i> (2020) http://hdl.handle.net/10204/11763 |
en_ZA |
dc.identifier.vancouvercitation |
George TB, Anochie-Boateng JK, Jenkins K. Laboratory performance and modelling behaviour of hot-mix asphalt with recycled crushed glass. Journal of the South African Institution of Civil Engineering, 62(3). 2020; http://hdl.handle.net/10204/11763. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - George, Theresa B
AU - Anochie-Boateng, Joseph K
AU - Jenkins, KJ
AB - In South Africa research is currently under way to determine the suitability of using locally available recycled crushed glass as a partial fine aggregate substitute in the production of asphalt mixes. This paper characterises the laboratory performance of a dense-graded asphalt wearing course mix consisting of 15% recycled crushed glass. The influence of selected antistripping additives on moisture susceptibility was specifically assessed as a variable in the performance evaluation of the glass-asphalt mix as follows: (a) the effect of 1% hydrated lime, (b) the effect of 0.5% liquid antistripping additive, and (c) the effect without the addition of antistripping additive. The effect of these variables on the moisture susceptibility of the glass-asphalt mix was evaluated using the tensile strength ratio parameter supported with a microscopic imaging analysis. Additionally, the stiffness and permanent deformation properties of the glass-asphalt mix that demonstrated optimum resistance to moisture damage was compared to the same mix without crushed glass. The performance properties were evaluated using the Huet-Sayegh model and a polynomial model respectively, which were used particularly to develop performance characterisation models for the glass-asphalt mix. The findings of this study revealed that an anti-stripping additive is essential to meet moisture susceptibility criteria and alleviate moisture damage in dense-graded glass-asphalt mixes. In particular, moisture susceptibility was improved using hydrated lime rather than the liquid antistripping additive. Furthermore, the selected constitutive models were able to effectively characterise the laboratory performance of both mixes, with the glass-asphalt mix demonstrating improved resistance to permanent deformation when compared with the conventional asphalt mix.
DA - 2020-09
DB - ResearchSpace
DP - CSIR
J1 - Journal of the South African Institution of Civil Engineering, 62(3)
KW - Glass-asphalt
KW - Moisture susceptibility
KW - Dynamic modulus
KW - Permanent deformation
KW - Constitutive modelling
LK - https://researchspace.csir.co.za
PY - 2020
SM - 2309-8775
SM - 1021-2019
T1 - Laboratory performance and modelling behaviour of hot-mix asphalt with recycled crushed glass
TI - Laboratory performance and modelling behaviour of hot-mix asphalt with recycled crushed glass
UR - http://hdl.handle.net/10204/11763
ER - |
en_ZA |
dc.identifier.worklist |
24169 |
en_US |