We have applied dicyclopentadiene (DCPD) resin for reinforcing pothole patch materials due to its unique properties –
low cost, low viscosity at beginning and ultra-toughness after curing, chemical compatibility with tar, tunable curing
profile through catalyst design. In this paper, we have designed a two layer structure – well compacted base layer and
DCPD reinforced 1-1.5" top layer – for pothole repair. By choosing two graded asphalt mixes, a porous top layer and
fully compacted base layer was prepared after compaction and ready for DCPD resin infiltration. The DCPD curing and
infiltration profile within this porous top layer was measured with thermocouples. The rutting resistance was tested with home-made wheel rutter. The cage effect due to the p-DCPD wrapping was characterized with wheel penetration test. The results showed that this two layer structure pothole repair has greatly improved properties and can be used for pothole repair to increase the service life.
As asphalt pavements age and deteriorate, recurring pothole repair failures and propagating alligator cracks in the asphalt pavements have become a serious issue to our daily life and resulted in high repairing costs for pavement and
vehicles. To solve this urgent issue, pothole repair materials with superior durability and long service life are needed. In the present work, revolutionary pothole patching materials with high toughness, high fatigue resistance that are
reinforced with nano-molecular resins have been developed to enhance their resistance to traffic loads and service life of repaired potholes. In particular, DCPD resin (dicyclopentadiene, C10H12) with a Rhuthinium-based catalyst is employed to develop controlled properties that are compatible with aggregates and asphalt binders. In this paper, a multi-level numerical micromechanics-based model is developed to predict the viscoelastic properties and dynamic moduli of these innovative nano-molecular resin reinforced pothole patching materials. Irregular coarse aggregates in the finite element analysis are modeled as randomly-dispersed multi-layers coated particles. The effective properties of asphalt mastic, which consists of fine aggregates, tar, cured DCPD and air voids are theoretically estimated by the homogenization technique of micromechanics in conjunction with the elastic-viscoelastic correspondence principle. Numerical predictions of homogenized viscoelastic properties and dynamic moduli are demonstrated.
As asphalt pavements age and deteriorate, recurring pothole repair failures and propagating alligator cracks in
the asphalt pavements have become a serious issue to our daily life and resulted in high repairing costs for pavement and
vehicles. To solve this urgent issue, pothole repair materials with superior durability and long service life are needed. In
the present work, revolutionary pothole patching materials with high toughness, high fatigue resistance that are
reinforced with nano-molecular resins have been developed to enhance their resistance to traffic loads and service life of
repaired potholes. In particular, DCPD resin (dicyclopentadiene, C10H12) with a Rhuthinium-based catalyst is employed
to develop controlled properties that are compatible with aggregates and asphalt binders. In this paper, a multi-level
numerical micromechanics-based model is developed to predict the mechanical properties of these innovative nanomolecular
resin reinforced pothole patching materials. Coarse aggregates in the finite element analysis are modeled as
irregular shapes through image processing techniques and randomly-dispersed coated particles. The overall properties of
asphalt mastic, which consists of fine aggregates, asphalt binder, cured DCPD and air voids are theoretically estimated
by the homogenization technique of micromechanics. Numerical predictions are compared with suitably designed
experimental laboratory results.
The potholes and alligator cracks in the asphalt pavement of our country's roadways have become an annoying part of
our daily life. In order to reinstate and maintain our pavement infrastructure integrity and durability, we have identified
dicyclopentadiene (DCPD) resin for this purpose due to its unique properties - low cost, low viscosity at beginning and
ultra-toughness after curing, chemical compatibility with tar, tunable curing profile due to catalyst design. DCPD resin
can penetrate into high porous pavement area to reinforce them and block water or moisture seeping channels. It also can
strongly bond the pothole patches with original pavement, and hold them together for a whole. With the catalyst design,
DCPD could apply for all the weather, cold or hot, wet or dry. In this paper, we will investigate the DCPD reinforcement
for cold mix and hot mix for pothole repair, as well as the bonding strength improvement between repair materials and
original pavement, and show that DCPD is promising materials for application in reinforced pothole patching materials.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.