Structure · dataset · 2026
Supplementary file 1_Protocol-dependent aging responses of polyurethane-bound pavement composites under thermo-oxidative, hygrothermal, and UV exposure.docx
Listed in NCL Data
<p>Polyurethane-bound pavement composites offer high mechanical performance, but accelerated durability rankings can depend on how aging is imposed and which material response is measured.
Description
This study compared a moisture-curing methylene diphenyl diisocyanate-based polyether polyurethane binder and dense PC-13 composite under thermo-oxidative, hygrothermal, continuous ultraviolet (UV), intermittent UV, and intermittent UV–immersion exposure.
A 20 h thermo-oxidative group enabled duration-matched comparison with 20 h hygrothermal aging, and replicated mixture testing at 480 h supported Welch tests with Holm correction across the three UV protocols. At 20 h, thermo-oxidative aging reduced binder tensile strength to 13.52 MPa versus 18.13 MPa after hygrothermal aging and also produced lower elongation at break and splitting strength. Gel permeation chromatography and tetrahydrofuran-insoluble measurements showed that soluble-fraction molecular-mass changes did not reproduce the mechanical severity ranking.
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At 480 h, intermittent UV–immersion produced the lowest mean dynamic stability, flexural strain, and splitting strength, with retentions of 38.31%, 25.59%, and 52.57%, respectively. Flexural strain distinguished all three UV protocols, while the matched intermittent comparison showed a significant additional loss of dynamic stability when water immersion replaced 1 h of dark conditioning. Because continuous and intermittent schedules accumulated different UV-on times, those comparisons are interpreted only as whole-protocol contrasts.
The results demonstrate that durability assessment of polyurethane-bound pavement composites requires protocol-specific, multi-indicator interpretation.</p>
Links
Where it is published
- DOI doi.org/10.3389/fmats.2026.1964302.s001 ↗
DOI / persistent id · from data ncl ac uk
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from data ncl ac uk
Topics
- From keywords
- Earth & Environmental Science · Functional materials
Provenance · 1 source records, 7 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NCL Data | oai:figshare.com:article/34069236 | 4 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · data ncl ac uk | connector:data_ncl_ac_uk@1.0.0 | |
| concepts[field].anzsrc:field:401605 | mapping · data ncl ac uk | vocabulary-mapper@1.0.0 | keywords['Functional Materials'] |
| concepts[field].local:field:earth-environmental | mapping · data ncl ac uk | connector:data_ncl_ac_uk@1.0.0 | |
| description | source · data ncl ac uk | connector:data_ncl_ac_uk@1.0.0 | /metadata/dc/description |
| license | source · data ncl ac uk | connector:data_ncl_ac_uk@1.0.0 | /metadata/dc/rights |
| publication_date | source · data ncl ac uk | connector:data_ncl_ac_uk@1.0.0 | |
| title | source · data ncl ac uk | connector:data_ncl_ac_uk@1.0.0 | /metadata/dc/title |