Ir. A.C.J. de Korte : Curriculum Vitae

Education

September 2001 – December 2006

Industrial Engineering and Management,

Faculty of Business, Public Administration and Technology

University of Twente

Technical specialization Construction Technology & Management

July 2001

Propadeuse Exam Industrial Engineering and Management (old style)

Augustus 1995 – June 2001

Hendrik Pierson College, Zetten

Secondary education

Employment record

January 2007 - Current

PhD-student

University of Twente

Subject; Modelling of hydration and fire behaviour of gypsum and cementious materials

Supervisor; Prof.Dr.Ir. H.J.H. Brouwers (TU Eindhoven)

February 2006 – December 2006

Graduation project

Cement-Immobilisation-Concrete research group

University of Twente, Enschede

Subject; Cold Immobilisation of contaminate soil

Supervisors; Prof. Dr.Ir. H.J.H. Brouwers, Prof. D.G. Mans, ing. E.M.H. Schildkamp and Ir. S.J. Dijkmans

Augustus – October 2004

Internship

Department real estate and building affairs

Wageningen University and Research centre.

Subject: Sales yield & park management; a research to the surplus value of park management of the area Kortenoord in Wageningen.

Supervisors; Dr.Ir. R.S. de Graaf and Drs. E.G. van der Meer

Research

The research, placed in the 6th FP project I-SSB, concerns innovative developments in the design, production and application of gypsum plasterboards in lightweight steel structures. The research focuses on the development of mixes containing anhydrite/hemi-hydrate/cement binders, admixtures, aggregates, fillers, photo-catalytic materials, fibres etc. Based on underlying theory, European building codes, and the construction industry’s needs, new types of plasterboard will be developed. The study will also include research, evaluation and application of alternative ingredients and smart components.

The present research project concerns the simulation of hardening process of gypsum based plasterboards and materials and influences of fire on the microstructure of these materials. The simulation of hydration behaviour of cement/gypsum plasterboards is executed by extending the CEMHYD3D-model with the hydration of calcium sulphates. In the last ten years the model is extended at the University of Twente for pore water chemistry (Van Eijk, 2001) and slag cement hydration (Chen, 2007).

Overall research-objectives

1. The modelling of the hydration.

Calcium sulphates (like gypsum) are in the existing hydration model CEMHYD3D already present, but the way these products are modelled is too limited for the present research.

2. The development of a multi-scale fire model

The fire model which is developed describes the chemical and mechanical changes in the material. The model makes use of the chemical decomposition reactions. Together with the reaction temperatures and an external heat flux this forms the basis for model. The chemical reactions introduce volume changes and changes in the thermal properties (density, specific heat, heat conduction).

3. Computer based design

The combination of the hydration and fire model can be used for the computer-based design of gypsum plasterboards. The design process is cyclic. This will be done by changing the input parameters of the hydration and exposing the ‘produced’ microstructure to fire with the help of the fire model. The output results of both models can than be assessed according to the predefined requirements. Based on these results the input of the model can be modified and cycle will start again.

4.The development of a forensic fire investigation tool

Forensic research focuses on the determination of the temperature levels (history) and the cause of the fire. The main differences among fires are their speed and attained temperatures. Based on structure changes of the material the temperature and speed of the fire can be determined. For this purpose the fire model will have the possibility to cope with the several fire curves

Current results include;

First modification of the hydration model for the use of gypsum as main binder. This modification includes the formation of needles (crystal shape), modification of the primary and secondary nucleation and the including of gypsum as the final product.
First version of the fire model has been developed. This model is based on thermo-chemical laws and can predict the influence of fire on the properties of the material (i.e. density, thermal conductivity, specific heat, enthalpy, permeability, specific surface area).

Plans for next years include;

Further modification of the hydration model for the use of gypsum, including pore water chemistry
Further development of fire model, including improved mass and heat transfer and the introduction of cement phases.
Prediction/simulation of the following properties of gypsum plasterboard at ambient and elevated temperature; thermal conductivity, permeability, specific surface area and ultrasoon velocity through the mixtures
Simulation of packing of particles.

Teaching activities

Involved in the bachelor courses;

Civil material science (coordinating lecturer)

Civil environmental science (assisting in Greencalc practical work).

Guest lecturer in the course of sustainable building

Publications

Brouwers, H. J. H., and A. C. J. de Korte. “Multi-Cycle and Multi-Scale Cellular Automata for Hydration Simulation (of Portland-Cement),” 2014.

De Korte, A. C. J. “Cement/Gypsum Plasterboards; The Modelling of Hydration and Fire Response.” Oral presentation presented at the 9th PhD Symposium 2007, Research school Integral design of structures, Delft, The Netherlands, 2007.

———. “Granular and Multi-Phase in Hydration and Fire Modelling.” Oral presentation presented at the Impact, n.d.

———. “Hydration Modelling of Calcium Sulphates.” In 7th Fib International PhD Symposium in Civil Engineering, edited by R. Eligehausen and C. Gehlen, 8:3–13. Stuttgart, Germany: Universitat Stuttgart, 2008.

———. “Modeling of Hydration and Fire Behavior of Gypsum Plasterboards.” presented at the Impact meeting, April 26, 2007.

———. “Thermal Conductivity of Gypsum Plasterboards.” Oral and poster presentation presented at the PhD-meeting Research School Integral Design of Structures (9-10 December 2008), Noordwijkerhout, December 9, 2008.

De Korte, A. C. J., and H. J. H Brouwers. “Ultrasonic Sound Speed Measurement as Method for the Determining the Hydration Degree of Hydration Degree.” In Proceedings 8th Fib International PhD Symposium in Civil Engineering, edited by Gregor Fisher, Mette R Geiker, Ole Hededal, Lisbeth Ottosen, and Henrik Stang, 1:593–97. Kgs. Lyngby, Denmark: DTU Byg, 2010.

De Korte, A. C. J., and H. J. H. Brouwers. “A Cellular Automata Approach to Chemical Reactions; 1 Reaction Controlled Systems.” Chemical Engineering Journal 228C (2013): 172–78. doi:10.1016/j.cej.2013.04.084.

———. “Calculation of Thermal Conductivity of Gypsum Plasterboards at Ambient and Elevated Temperature.” Fire and Materials 34, no. 2 (2010): 55–75. doi:10.1002/fam.1009.

———. “Hydration Modelling of Calcium Sulphates.” In International Conference on Construction and Building Technology, ICCBT 2008, edited by H. Al-Mattarneh, K. N. Mustapha, and M. P. Nuruddin, A:433–44. Kuala Lumpur, Malaysia, 2008.

———. “Multi-Scale Hydration Modeling of Calcium Sulphates.” In 17th Internationale Baustofftagung, edited by H. B Fischer and K. A. Bode, 1:413–18. Weimar, Germany: F.A. Finger-Institut fur Baustoffkunde, 2009.

———. “Production of Non-Constructive Concrete Blocks Using Contaminated Soil.” In Excellence in Concrete Construction through Innovation, 107–18. London, UK: CRC Press Taylor & Francis group., 2008.

———. “Production of Non-Constructive Concrete Blocks Using Contaminated Soil.” Construction and Building Materials 23, no. 12 (2009): 3564–78. doi:10.1016/j.conbuildmat.2009.06.022.

———. “Relation between a Hybrid Surface and Diffusion Controlled Reactions and Cellular Automata Parameters.,” 2015.

———. “Report on Combined Functional, Financial and Environmental Analysis.” Deliverable. I-SSB. Enschede, The Netherlands: University of Twente, 2010.

———. “The Modelling of Particles Packing and Specific Surface for Spherical and Non-Spherical Particles in a Digitized Cementsystem.” In Preparation, 2010.

———. “Thermal Conductivity of Gypsum Plasterboards; at Ambient Temperature and Exposed to Fire.” In Proceedings of International Conference Applications of Structural Fire Engineering, edited by F. Wald, P. Kallerova, and J. Chlouba, 1:158–63. Prague, Czech Republic: Czech Technical University, Prague, Czech Republic, 2009.

———. “Thermodynamic and Micro-Structural Changes in Plasterboards Containing Various Fibres.” Deliverable. I-SSB. Enschede, The Netherlands: University of Twente, 2010.

———. “Thermodynamic Changes in Plasterboards and Novel Gypsum Materials.” Deliverable. Enschede, The Netherlands: University of Twente, June 30, 2009.

———. “Ultrasonic Sound Speed Analysis of Hydrating Calcium Sulphate Hemihydrate.” Journal of Material Science, 2011. doi:10.1007/s10853-011-5682-6.

———. “Ultrasonic Sound Speed of Hydrating Calcium Sulphate Hemihydrate; Part 1, the Calculation of Sound Speed of Slurries and Hardened Porous Material.” In 1. Weimarer Gipstagung, edited by H. B. Fischer, Chr. Mattes, and C. Beuthan, 1:55–64. Weimar, Germany: F.A. Finger-Institut für Baustoffkunde, 2011.

———. “Ultrasonic Sound Speed of Hydrating Calcium Sulphate Hemihydrate; the Correlation of Sound Velocity to Hydration Degree.” In 1. Weimarer Gipstagung, edited by H. B. Fischer, Chr. Mattes, and C. Beuthan, 1:65–71. Weimar, Germany: F.A. Finger-Institut für Baustoffkunde, 2011.

Weber, B., A. C. J. De Korte, and H. J. H. Brouwers. “Report on Validation of Existing Thermomechanical Constitutive Laws for Modeling of Gypsum/extension for Cement.” Deliverable. Dübendorf / Enschede: Swiss Federal Laboratory for Material Testing and Research (EMPA) / University of Twente, January 1, 2008.

Yu, Q. L., and H. J. H Brouwers. “Gypsum: An Investigation of Microstructure and Mechanical Properties.” In Proceedings 8th Fib International PhD Symposium in Civil Engineering, edited by Gregor Fisher, Mette R Geiker, Ole Hededal, Lisbeth Ottosen, and Henrik Stang, 1:341–46. Kgs. Lyngby, Denmark: DTU Byg, 2010.

Yu, Q. L., H. J. H. Brouwers, and A. C. J. De Korte. “Gypsum Hydration: A Theoretical and Experimental Study.” In 17th Internationale Baustofftagung, 1:783–88. Weimar, Germany: F.A. Finger-Institut fur Baustoffkunde, Weimar, 2009.

———. “The Influence of Fibres on Hydration, Mechnical and Thermal Properties.” In Preparation, 2009.