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Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21
Danish Innovation Consortium (2014-2018)
Green Transition of Cem...
Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21
Companies
 Aalborg Portland A/S
 Sweco A/S
 Rambøll Danmark A...
Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21
Purpose and motivation
 Denmark has a long tradition for Green ...
Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21
Activities
 Test and demonstrate new binder systems in full sca...
Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21
Activities …cont.
 Assess the potential for CO2 reductions
 Fu...
Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21
 Danish concrete branch organisation has
launched a sustainabil...
Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21
 Marine exposure sites and a highway between traffic lanes
Expo...
Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21
Demonstration
projects
Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21
Funktionsbaseret optimering
Motorway bridge – Rødby, 2016
Trial ...
Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21
 XC2, XC3, XC4 + XF1 (air entrainment), V/C < 0.55
 Requiremen...
Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21
 XD2, XD3, XS3, V/C < 0.40 and strength class  C40/50
 For XF...
Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21
 Two concrete applications
 Bridge concrete XD3, XS3, XF4, XA3...
Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21
 Performance-based development for hardened
concrete:
 Strengt...
Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21
 For the bridge applications CEM I 52.5 N was used:
 FA/C = 0....
Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21
 www.gronbeton.dk
 www.baeredygtigbeton.dk
 CLN@DTI.dk
 Ques...
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Grøn betong II – Ett danskt projekt om klimatreducerad betong - Claus Vestergaard, Teknologisk Institut.

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Grøn betong II – Ett danskt projekt om klimatreducerad betong - Claus Vestergaard, Teknologisk Institut.

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Grøn betong II – Ett danskt projekt om klimatreducerad betong - Claus Vestergaard, Teknologisk Institut.

  1. 1. Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21 Danish Innovation Consortium (2014-2018) Green Transition of Cement and Concrete Production in Denmark
  2. 2. Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21 Companies  Aalborg Portland A/S  Sweco A/S  Rambøll Danmark A/S  MT Højgaard A/S  Unicon A/S  Dansk Beton Fabriksbetonforeningen  A/S Ikast Betonvarefabrik  Betonværket Brønderslev A/S  DK Beton A/S  Frejlev Cementstøberi A/S  Gammelrand Beton A/S  IBF Beton Nordvestjylland A/S  K.G. Beton A/S  NCC Roads, Bornholms Betonværk A/S  Skagen Cementstøberi A/S  Thisted-Fjerritslev Cementvarefabrik A/S  Unicon A/S  VK Beton og Byggemarked A/S  Wewers Belægningssten A/S Participants Knowledge and dissemination  Teknologisk Institut (DTI)  Københavns Erhvervsakademi  Erhvervsakademi Sjælland  Erhvervsakademiet Lillebælt  Via University College – Campus Horsens  Center for Betonuddannelse (AMU Nordjylland) Academia (Research)  DTU Byg Other  Energistyrelsen  InnoBYG network Building owners  Vejdirektoratet  Banedanmark  Femern A/S
  3. 3. Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21 Purpose and motivation  Denmark has a long tradition for Green Concrete since the late 1990ies  Cement manufacturer under pressure to develop new green binder materials  General lack of SCM’s in the market  Sustainability is getting high on the agenda  Need to collaborate across the “specifier – designer – producer – supplier” chain
  4. 4. Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21 Activities  Test and demonstrate new binder systems in full scale  Development of transport model for concrete (DTU) for durability modelling  Develop and apply the methodology for the use of performance-based specifications/requirements instead of deemed-to-satisfy requirements  …
  5. 5. Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21 Activities …cont.  Assess the potential for CO2 reductions  Full-scale demonstration projects (three bridges and an indoor wall)  Establish exposure sites for long-term observations  Workshops for concrete students
  6. 6. Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21  Danish concrete branch organisation has launched a sustainability initiative:  50 % reduction of CO2 footprint per unit concrete in 2030 compared with today (2019)  Aalborg Portland is working on new cement type for 2020  Based on CEM II/B-M (LL-Q)  Danish EN 206 DK NA has opened up for more use of bio-coal-FA and limestone filler What is next step ?
  7. 7. Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21  Marine exposure sites and a highway between traffic lanes Exposure sites for long-term durability data Hirtshals, West Coast Rødby near Femern
  8. 8. Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21 Demonstration projects
  9. 9. Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21 Funktionsbaseret optimering Motorway bridge – Rødby, 2016 Trial castings. Unicon, MT Højgaard Bridge elements to be lifted in place Extension of railway bridge
  10. 10. Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21  XC2, XC3, XC4 + XF1 (air entrainment), V/C < 0.55  Requirement on min. strength class  C30/37 Danish requirements on binder Cement C (EN 197-1) SCM’s (if used) Limitations when calculating V/C Other remarks CEM I (min. 42.4 MPa) + FA + MS k = 0.5 and 2.0 FA/C ≤ 0.33 MS/C ≤ 0.11 Normal approach in DK. Clinker ratio typically > 80% CEM II/A-V CEM II/B-V + MS k = 2.0 MS/C ≤ 0.11 Normally not used CEM II/A-L CEM II/A-LL + FA + MS k = 0.5 and 2.0 FA/C ≤ 0.33 MS/C ≤ 0.11 CEM II/A-LL is used in DK precast Clinker ratio as low as 60 % CEM I (min. 52.5 MPa) + GCC type A + GCC type B GCC/C ≤ 0.25 (k = 1.0) GCC/C ≤ 0.10 (k = 1.0) GCC = Ground limestone filler (fulfilling certain requirements)
  11. 11. Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21  XD2, XD3, XS3, V/C < 0.40 and strength class  C40/50  For XF4 air void structure shall be good  For XA3 sulphate resistant cement, CEM I - SR5 Danish requirements on binder Cement C (EN 197-1) SCM’s (if used) Limitations when calculating V/C Other remarks CEM I (min. 42.4 MPa) + FA + MS k = 0.5 and 2.0 FA/C ≤ 0.33 MS/C ≤ 0.11 Normal approach in DK. Clinker ratio typically > 80% CEM II/A-V + MS k = 2.0 MS/C ≤ 0.11 Normally not used. CEM II/A-L CEM II/A-LL + FA + MS k = 0.5 and 2.0 FA/C ≤ 0.33 MS/C ≤ 0.11 Only for XD3 without frost. Clinker ratio as low as 60 % Normally not used.
  12. 12. Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21  Two concrete applications  Bridge concrete XD3, XS3, XF4, XA3 - C35/40  Indoor concrete XC1, C25/30, SCC  Compare the candidate concretes with reference mix designs  CEM I 42.5 SR5, Fly ash FA/C = 0.15 for the bridge application, V/C = 0.37, C40/50  CEM I 52.5 N, Fly ash FA/C = 0.25 for the building application, V/C = 0.69, C25/30, SCC How did we investigate ?
  13. 13. Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21  Performance-based development for hardened concrete:  Strength and E-modulus  Freeze-thaw resistance (only for bridge)  Chloride migration at different times up to one year (only for bridge)  Carbonation resistance (only for indoor)  Fresh properties:  Slump/flow, air content  Viscosity, stickiness How did we investigate ?
  14. 14. Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21  For the bridge applications CEM I 52.5 N was used:  FA/C = 0.8. Clinker only 55% of binder.  FA/C = 0.5 and LL/C = 0.35. Clinker only 54%.  FA/C = 0.5 and no LL. up to 0.8. Clinker 67%.  Mixes with limestone and calcined clay:  CEM I / LL / Q = 86% / 2% / 12% CEM II/A-M (Q-LL)  CEM I / LL / Q = 86% / 6% / 8% CEM II/A-M (Q-LL)  Plus mixes with FA addition 10 to 20% of binder  For the building application CEM I / LL / Q = 65% / 14% / 21% CEM II/B-M (Q-LL) Resulting mixes
  15. 15. Claus Vestergaard Nielsen, Svensk Betongdagen, 2019-11-21  www.gronbeton.dk  www.baeredygtigbeton.dk  CLN@DTI.dk  Questions… ? More information

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