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8/12/2019 Roller Compacted Concrete (RCC) in Pavements
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Roller Compacted Concrete (RCC) in Pavements.. the UK Experience
Kostas Koutselas Research Manager
Aggregate Industries UK
Research & Development Department
Aggregate Industries Ltd. 2008 Technical Seminar, EcoLanes Fifth Management Meeting, Paphos, Cyprus, 8 April 2009
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What is Roller Compacted Concrete?
RCC takes its name from the construction method used
Laid by tracked asphalt paver equipped with heavy duty dual tampingscree an compacte w t ro ers
,
aggregates and water)
Produced in a high output continuous mix plant
Crack control is b induced crackin
Aggregate Industries Ltd. 2008 Technical Seminar, EcoLanes Fifth Management Meeting, Paphos, Cyprus, 8 April 2009
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What is the performance of Roller Compacted Concrete?
Strength and durability of Pavement Quality Concrete
May provide final running surface
Suitable for low speed environment
Requires surfacing for high speed roads
Requires surfacing in airfield applications
Aggregate Industries Ltd. 2008 Technical Seminar, EcoLanes Fifth Management Meeting, Paphos, Cyprus, 8 April 2009
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Constituent Materials
Aggregate - Good quality crushed rock preferred
High 10% fines value Los Angeles Coefficient LA40
Specific dense grading
Cement - Relatively low cement content
.
PC / PFA blend gives long term strength gain
Water- Potable
Low target moisture content
Typically 6%
Aggregate Industries Ltd. 2008 Technical Seminar, EcoLanes Fifth Management Meeting, Paphos, Cyprus, 8 April 2009
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Specification - Standard UK practise adopted
Specification for Highway Works
Series 800 covers mixing, laying, rolling and jointing activities
oncrete strengt to , typ ca y
Testing of strength & Density to Clause 870 of SHW
5 samples per 1000mCubes tested in compression at 7 and 28 days
In-situ density verified by NDM
Optional additional testing compressive strength at 56, 90 & 365
Flexural strength beams taken to verify laboratory trials
Aggregate Industries Ltd. 2008 Technical Seminar, EcoLanes Fifth Management Meeting, Paphos, Cyprus, 8 April 2009
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Method - Mixing
RCC is usually produced in a continuous mixing plant set up on site, enablingood control over roduct ualit and continuit of su l to the aver. Su l
Aggregate Industries Ltd. 2008 Technical Seminar, EcoLanes Fifth Management Meeting, Paphos, Cyprus, 8 April 2009
from Ready Mix plant is also possible depending on contract
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Method - Paving
Paver laid
High compaction dual tampingscreeds
Crack control joints installedmechanically
compaction
Aggregate Industries Ltd. 2008 Technical Seminar, EcoLanes Fifth Management Meeting, Paphos, Cyprus, 8 April 2009
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Highway Paving
Full width paving up to 12m in
one pass
Thickness of up to 300mm in
one lift
Aggregate Industries Ltd. 2008 Technical Seminar, EcoLanes Fifth Management Meeting, Paphos, Cyprus, 8 April 2009
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Testing
Pavement performance is heavily influenced by the degree of
compaction of the RCC and every effort is made to achieve the
The site testing regime includes NDMs, cubes and control beams
Aggregate Industries Ltd. 2008 Technical Seminar, EcoLanes Fifth Management Meeting, Paphos, Cyprus, 8 April 2009
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Current Applications in UK
Truck & Trailer Parking
Container Storage & Handling
Materials Storage & Handling
Waste Processing Hardstandings
Composting Hardstandings
Heav Industrial Access Roads
Farm Roads
Aggregate Industries Ltd. 2008 Technical Seminar, EcoLanes Fifth Management Meeting, Paphos, Cyprus, 8 April 2009
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Further Information
USA Portland Cement Association website
www.cement.org/pavements
Carlos Jofr Spanish Institute of Cement, Madrid
Aggregate Industries Ltd. 2008 Technical Seminar, EcoLanes Fifth Management Meeting, Paphos, Cyprus, 8 April 2009
