Papers & Presentations

Pelcon runs a specialised laboratory for aggregate and concrete testing, covering numerous test methods. We are highly recognised within the fields of aggregate acceptance testing, concrete microstructure, air void structure and durability testing. Your specimens and samples will be treated professionally and fast.

The publication list represents only a small fraction of the investigations, analysis and reports produced by Peter Laugesen (Managing Director of PELCON) over the years. The selection of subjects for publication has been controlled both by duty of silence against clients, and by the key scopes of interest of Dansk Beton Teknik A/S.

  • Laugesen, P.: Main Defects in High Performance Concretes, as Detected by Petrographic and Air void Analysis of Hardened Con­crete. Dansk Beton Teknik A/S, 1991.
  • Laugesen, P.: Petrographic Analysis - Potential and Limitation (in Danish). Dansk Beton Forening, November 1992.
  • Laugesen, P.: Effective W/C Ratio of Cement Paste in Concrete, in Jan E. Lindqvist et. Al. (eds.) Proceedings of the Fourth Euroseminar on Microscopy Applied to Building Materials. Visby - Sweden, 1993
  • Laugesen, P.: Do the Control Parameters Control ? - Do the Mixer Homogenise ? - and Can Silica Fume Be Dispersed ? (in Danish), Dansk Beton Forening, 1993.
  • Laugesen, P.: Concrete Airvoid- and Micro structure Problems, eba. A Description of Possible Relationships Between NCR and the Production of Concrete Structures. Dansk Beton Teknik A/S 1994.
  • Laugesen, P.: Silica Fume Clumps in Fresh Concrete (in Danish), Test Method DBT-LAB-46. Dansk Beton Teknik A/S 1994.
  • Henrichsen, A. & Laugesen, P.: Monitoring of Concrete Quality in High Performance Civil Engineering Constructions, in S. Diamond et al.(ed): Microstructure of Cement Based Systems / Bonding and Interfaces in Cementitious Materials, MRS Volume 370, 1994, pp. 49-56.
  • Laugesen, P.: Dispersability of Condensed Silica Fume (CSF), Standard Test Method, DBT-LAB-47. Dansk Beton Teknik A/S 1995.
  • Laugesen, P.: Silica Fume Clumps in Condensed Powder and in Concrete (in Danish). Dansk Beton Teknik A/S, august 1995.
  • Laugesen, P.: The use of petrography in QA/QC of concrete, in J. Elsen (ed.): Pro­ceed­ings from 5th Euro­seminar on Micro­scopy of Building Materials, Leuven - Belgium 1995.
  • P. et al.: HETEK. Method for Test of the Frost Resistance of High Performance Concrete. State of the Art. The Danish Road Directorate, Report no. 55, 1996.
  • Geiker, M.; Laugesen. P.; Pedersen, E.J.; Thaulow, N.; Goldman, P.; and Frederiksen, J.O.: HETEK. Method for Test of the Frost Resistance of High Performance Concrete. Supplementary research. The Danish Road Directorate, Report no. 86, 1996.
  • Eriksen, K.; Geiker, M.; Grelk, B.; Laugesen. ; Pedersen. E.J.; Thaulow, N.; Goldman, P. and Frederiksen, J.O.: HETEK. Method for Test of the Frost Resistance of High Performance Concrete. Performance testing versus in situ observations. The Danish Road Directorate, Report no. 93, 1996.
  • Henrichsen, A.; Laugesen, P.; Geiker, M.; Pedersen. J.; and Thaulow, N.: HETEK. Method for Test of the Frost Resistance of High Performance Concrete. Summary, conclusions and Recommendations. The Danish Road Directorate, Report no. 97, 1997.
  • Henrichsen, A.; Laugesen, P.; Geiker, M.; Pedersen. J.; and Thaulow, N.: HETEK. Method for Test of the Frost Resistance of High Performance Concrete. Summary, conclusions and Recommendations (in Danish). The Danish Road Directorate, Report nr. 105, 1997.
  • Laugesen, P.: The new test method for petrographic analysis? (In Danish). Presentation, Dansk Beton Forening, April 16, 1997.
  • Laugesen, P.: Testing of Concrete, Hardened Concrete, Production of fluorescence impregnated plane sections. Danish test method DSF 423.39, 1998.
  • Laugesen, P.: Testing of Concrete, Hardened Concrete, Production of fluorescence impregnated thin sections. Danish test method DSF 423.40, 1998.
  • Laugesen, P.: Testing of Concrete, Hardened Concrete, Internal stability. Danish test method DSF 423.41 with Appendix, 1998.
  • Laugesen, P.: Testing of Concrete, Hardened Concrete, Concrete composition. Danish test method DSF 423.42, 1998.
  • Laugesen, P.: Testing of Concrete, Hardened Concrete, Paste homogeneity. Danish test method DSF 423.43 with Appendix, 1998.
  • Laugesen, P.: Testing of Concrete, Hardened Concrete, Paste cracks and bond cracks. Danish test method DSF 423.44, 1998.
  • Laugesen, P.: Testing of Concrete, Hardened Concrete, Degree of compaction. Danish test method DSF 423.45, 1998.
  • Jakobsen, U., Laugesen, P. and Thaulow, N.: Determination of water to cement ratio in hardened concrete by optical fluorescence microscopy. ACI Fall Convention, Los Angeles, California 1998.
  • Laugesen, P.: Concrete and its constituents. Keynote presentation, Hans S. Pietersen et al. (eds.): Pro­ceed­ings from 7th Euro­seminar on Micro­scopy of Building Materials, Delft – The Netherlands 1999.
  • Laugesen, P.: Testing of un-dispersed silica fume: in condensed powder, in fresh concrete and in hardened concrete, in Hans S. Pietersen et al. (eds.): Pro­ceed­ings from 7th Euro­seminar on Micro­scopy of Building Materials, Delft – The Netherlands 1999.
  • Jakobsen, U.H., Laugesen, P. and Thaulow, N. 2000: Determination of water to cement ratio in hardened concrete by optical fluorescence microscopy. In: Khan, M.S. (ed) Water-Cement Ratio and other durability parameters - Techniques for determination, ACI SP-191, pp. 27-41.
  • Laugesen, P.: Four presentations: An overview of Alkali Silica Reactions. ASR – The Danish Experience. QA-QC of Aggregate Reactivity. Evaluation of test methods. Workshop on ASR, Delft 2001. Organised by RWS The Netherlands.
  • Geiker, M.R. and Laugesen, P.: On the effect of laboratory conditioning and freeze/thaw exposure on moisture profiles in HPC. Cement and Concrete Research 31 (2001) 1831-1836.
  • Laugesen, P. and Aarre, T.: Floor Manual - A handbook for projecting and constructing concrete floors (in Danish). DBT-NCC, 182 pages, 2001.
  • Laugesen, P. and Aarre, T.: Flawless concrete floors – Planning, casting and curing concrete floors (in Danish). DBT-NCC, 46 pages, 2001.
  • Laugesen, P.: Appendices A-E in the Dutch Test method for petrographic assessment of potential alkali reactivity (translated from English to Dutch): A: Fluorescent epox;, B: Vacuum impregnation of sand samples; C: Thin section production; D: Checklist and E: Photo atlas). VD-62. ReijksWaterStadt/CUR. 2002.
  • Laugesen, P.: Concrete petrography in testing, construction and research. Lectures at EPFL, Lausanne, Switzerland. April 2002.
  • Laugesen, P.: Preparation of impregnated polished sections and thin sections, techniques. Sixth Canmet/ACI International Conference on Durability of Concrete; Thessaloniki, 2003.
  • Laugesen, P.: Objectives and benefits of conducting petrographic analysis. Sixth Canmet/ACI International Conference on Durability of Concrete; Thessaloniki, 2003.
  • Bonafous, L., Strini, A., Vallee, F., Moussiopoulos, P.N., Batzis, J. McIntyre, R and Laugesen, P.: Photo-catalytic innovative covering applications for de-pollution assessment. Abstract. ECM 2004: Rilem International Symposium on Environment-Conscious Materials and Systems for Sustainable Development; Japan, 2004.
  • Laugesen, P.: Do we obtain the expected porosity? Lecture at Danish Technical University Summer School on ‘Hydration and microstructure development in cement-based materials’; Lyngby Denmark – June 2003.
  • Laugesen, P.: Long term microstructural changes. Lecture at DTU Summer School on ‘Hydration and microstructure development in cement-based materials’; Lyngby Denmark – June 2003.
  • Laugesen, P.: Avoiding preparation defects. Workshop presentation at the 9th Euroseminar on Microscopy Applied to Building Materials, Trondheim Norway, September 2003.
  • Laugesen P.: Water to cement ratio determination by fluorescence microscopy of thin sections – An online round robin test. Presentation at the 9th Euroseminar on Microscopy Applied to Building Materials, Trondheim Norway, September 2003.
  • Scrivener, K.L, Crumbie, A.K. & Laugesen, P.: The interfacial transition zone (ITZ) between cement paste and aggregate in concrete: Special Issue: Cementitious materials. Interface Science, October 2004, vol. 12, no. 4, pp. 411-421(11).
  • Laugesen, P.: Crack sampling, Treatment and Analysis, in O. Mejlhede et al. (Ed.) Advanced Cement-Based Materials: Research and Teaching. Proceedings of the Knud Højgaard Conference, June 2005. DTU, Report R-155.
  • Laugesen, P.: Choice of concrete type and quality (in Danish). Danish Concrete Society, October 2006.
  • Laugesen, P.: The importance of sample preparation for petrographic studies. Workshop at the 11th Euroseminar on Microscopy Applied to Building Materials, Porto, Portugal, June 2007.
  • Laugesen, P. & Geiker M.: Effects of PP-fibres on fire-exposed concrete. Presentation at the 11th Euroseminar on Microscopy Applied to Building Materials, Porto, Portugal, June 2007.
  • Laugesen, P.: Quantitative petrography and point counting. Workshop at the 13th International Conference on Alkali Aggregate Reaction in Concrete, Trondheim, Norway, June 2008.
  • Laugesen, P.: Microstructure of RCC – Roller Compacted Concrete. 13th EMAMB, Dortmund 2009
  • Eriksen, K., Jakobsen, U. H., Laugesen, P.: Delayed ettringite formation in concrete exposed to seawater – microstructure, cracking and expansion testing. 13th EMAMB, Dortmund 2009
  • Laugesen, P.: Technical Aspects of Professional Petrography in Denmark and the World. Presentation at 11th meeting; Geological Society of London / Applied Petrography Group; September 21st 200
  • Laugesen, P.: Experiences with freeze-thaw test methods: Laboratory testing versus damages in ‘real life’ concrete. Presentation at the Nordic Miniseminar: Freeze-Thaw Testing of Concrete – Input to Revision of CEN Test Methods, Vedbæk, Danmark 4-5 march 2010
  • Laugesen, P.: Influence on Chloride Migration of Concrete Microstructure Defects. Presentation at the 32nd Conf. on Cement Microscopy, New Orleans, U.S.A. March 28 – April 1, 2010
  • Laugesen, P.: Air Void Analysis (in Danish). Presentation at the Danish Concrete Society / ‘The concrete club’, Jutland, Denmark, May 28th
  • Laugesen, P.: Inspection and Maintenance of Fresh Water Concrete Tanks (in Danish). Presentation at the Danish Water Supply Committee Meeting, December 15th
  • Laugesen, P.: Air void analysis in fresh & hardened concrete. Presentation at the ICMA, International Cement Microscopy Association 33rd Annular Conference, San Francisco, April 2011.
  • Laugesen, P.: Polycarboxylates – Friend or foe? Presentation at the 13th Euroseminar on Microscopy Applied to Building Materials, Ljubljana, June 2011.
  • Laugesen, P.: An on-line in-situ ASR investigation of the pylons of an 80 years old concrete bridge’ Presentation at the 34th ICMA, Halle Germany, April 2012.
  • Laugesen, P.: Fluorescence microscopy – A great help in concrete petrography. Presentation at the 35th ICMA, Chicago, April 2013.
  • Laugesen, P.: Microstructure changes by oxidation of slag cement concrete. Workshop presentation at the 14th Euroseminar on Microscopy Applied to Building Materials (EMABM 2013), Elsinore, Denmark, June 2013
  • Laugesen, P.: Application of slag cement concrete in marine environment – frost resistance (in Danish). Presentation at the Danish Concrete Society, Copenhagen, Denmark, March 2014
  • Laugesen, P.: Visby 1993 re-visited: Understanding the effective W/C ratio, as influenced by aggregates and air voids. 15th Euroseminar on Microscopy Applied to Building Materials (EMABM), TU Delft, The Netherlands, June 2015.
  • Laugesen, P.: 10 petrographic questions we don’t dare to ask – or maybe never thought of before… Workshop at the 15th Euroseminar on Microscopy Applied to Building Materials (EMABM), TU Delft, The Netherlands, June 2015.
  • Laugesen, P.: Recycled concrete for new buildings – a demonstration project (in Danish). DAKOFA-VHGB workshop: When recycling is successful, Copenhagen, March 28th
  • Laugesen, P.: Techniques in concrete microscopy with special emphasis on potential pitfalls in preparation and interpretation. Workshop at the 39th ICMA Conference, Toronto, Canada April 2017
  • Laugesen, P.: 30 years of petrography in field concrete. Keynote presentation, 16th Euroseminar on Microscopy Applied to Building Materials (EMABM), EPFL, Diablerets, Switzerland May 2017.
  • Laugesen, P.: Erfaringer fra Pelican-projektet. Genanvendelse af betonaffald i ny beton møde i Dansk Beton, Denmark November 2017.