Comparison of bituminous mixture properties at Various stages of construction of pavement
By: Singh, Japleen
.
Contributor(s): Singh, Prabhjot.
Publisher: Pune NICMAR 2021Edition: Vol.36(2), April-June.Description: 13-22p.Subject(s): Civil EngineeringOnline resources: Click here
In:
NICMAR Journal of construction managementSummary: Construction of bituminous pavements includes production, transportation, and
compaction of bituminous mixtures. The bituminous pavements undergo aging during
various stages from production to the end of service life. The initial aging, which
happens during production to compaction stage is termed as short term aging and has
profound effect on the mixture behaviour. As aged binder becomes stiff relative to virgin
binder, it is important to quantify such effects on mixture behaviour. In order to
investigate the density, stability and aging in bituminous pavements, mixtures were
collected from hot mix plant, at site in front of paver at various distances from hot mix
plant, and cores from compacted mixtures at different time periods. Marshall Method
was used to compact mixtures in laboratory to determine volumetric and mechanical
properties. Further, the bitumen was extracted from representative specimens to
determine the rheological properties such as complex shear modulus and viscosity
using Dynamic Shear Rheometer (DSR). The rheological properties were used to
quantify differences in binder behaviour subjected to different stages of aging. It was
found that bitumen extracted from the field core had better recovery characteristics and
highest complex shear modulus than the bitumen extracted from the paver and Hot Mix
Asphalt (HMA) plant mix. The results clearly indicated the variations in the rheological
properties of bitumen recovered from different sources during the process of
construction.
| Item type | Current location | Call number | Status | Date due | Barcode | Item holds |
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Articles Abstract Database
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School of Engineering & Technology (PG) Archieval Section | Not for loan | 2021-2022660 |
Construction of bituminous pavements includes production, transportation, and
compaction of bituminous mixtures. The bituminous pavements undergo aging during
various stages from production to the end of service life. The initial aging, which
happens during production to compaction stage is termed as short term aging and has
profound effect on the mixture behaviour. As aged binder becomes stiff relative to virgin
binder, it is important to quantify such effects on mixture behaviour. In order to
investigate the density, stability and aging in bituminous pavements, mixtures were
collected from hot mix plant, at site in front of paver at various distances from hot mix
plant, and cores from compacted mixtures at different time periods. Marshall Method
was used to compact mixtures in laboratory to determine volumetric and mechanical
properties. Further, the bitumen was extracted from representative specimens to
determine the rheological properties such as complex shear modulus and viscosity
using Dynamic Shear Rheometer (DSR). The rheological properties were used to
quantify differences in binder behaviour subjected to different stages of aging. It was
found that bitumen extracted from the field core had better recovery characteristics and
highest complex shear modulus than the bitumen extracted from the paver and Hot Mix
Asphalt (HMA) plant mix. The results clearly indicated the variations in the rheological
properties of bitumen recovered from different sources during the process of
construction.
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