Evaluation of Cost-Effective Modified Binder Thin Chip and Cape Seal Surfacings on an Anionic Nano-Modified Emulsion (NME)-Stabilised Base Layer Using Accelerated Pavement Testing (APT)

Emulsion stabilisation of base layers surfaced with chip seals often proves problematic, chips punching into the and early distress. This can be aggravated by use modified binders that restricts evaporation moisture from pavement layers. The introduction new-age (nano)-modified emulsion (NME) has advantage water is chemically repelled stabilised layer, resulting in an accelerated development strength. A need was identified to evaluate early-life performance selected Cape seals, together on anionic NME-stabilised constructed materials traditionally classified as unsuitable, using archaic empirically derived tests. Three different seal surfacings unconventional were evaluated testing (APT) Model Mobile Load Simulator—3rd model (MMLS3). objectives experimental design binder performance, terms loss before orientation, deformation characteristics a hand-laid NME slurry without any cement filler. It shown used at low risk, layer containing fines exceeding 22%. selection specific reduce risks associated surfacings, which impact construction limitations. recommended elastomer-modified newly or rehabilitated layers, entrapment, needs reconsidered.