Pore Characteristics and Their Effects on the Material Properties of Foamed Concrete Evaluated Using Micro-CT Images and Numerical Approaches
Abstract
:1. Introduction
2. Preparation of Foamed Concrete Specimens
3. Micro-CT Image and Characterization of the Pore Structure
3.1. SEM and Micro-CT Imaging Method
3.2. Probabilistic and Quantitative Characterization Methods
3.2.1. Low-Order Probability Functions
3.2.2. Local Volume Ratio and Shape Factor
4. Properties Evaluation Using Experiments and Numerical Methods
4.1. Experiments for the Evaluation of Material Properties
4.2. Numerical Simulation for Thermal and Mechanical Analysis
5. Results and Discussion
5.1. Micro-CT Image and Characteristics of the Pore Structure
5.2. Material Properties of the Foamed Specimens
6. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
- Nambiar, E.K.; Ramamurthy, K. Air–void characterisation of foam concret. Cem. Concr. Res. 2007, 37, 221–230. [Google Scholar] [CrossRef]
- Ramamurthy, K.; Nambiar, E.K.; Ranjani, G. A classification of studies on properties of foam concrete. Cem. Concr. Compos. 2009, 31, 388–396. [Google Scholar] [CrossRef]
- Huang, Z.; Zhang, T.; Wen, Z. Proportioning and characterization of portland cement-based ultra-lightweight foam concretes. Constr. Build. Mater. 2015, 79, 390–396. [Google Scholar] [CrossRef]
- Pacheco-Torgal, F. Eco-efficient construction and building materials research under the EU Framework Programme Horizon 2020. Constr. Build. Mater. 2014, 51, 151–162. [Google Scholar] [CrossRef]
- Eleftheriadis, S.; Mumovic, D.; Greening, P. Life cycle energy efficiency in building structures: A review of current developments and future outlooks based on BIM capabilities. Renew. Sustain. Energy Rev. 2017, 67, 811–825. [Google Scholar] [CrossRef]
- Amran, Y.H.; Farzadnia, N.; Ali, A.A. Properties and applications of foamed concrete; a review. Constr. Build. Mater. 2015, 101, 990–1005. [Google Scholar] [CrossRef]
- Jaing, J.; Lu, Z.; Niu, Y.; Li, J.; Zhang, Y. Study on the preparation and properties of high-porosity foamed concretes based on ordinary portland cement. Mater. Des. 2016, 92, 949–959. [Google Scholar] [CrossRef]
- Yang, K.-H.; Lo, C.-W.; Huang, J.-S. Production and properties of foamed reservoir sludge inorganic polymers. Constr. Build. Mater. 2014, 50, 421–431. [Google Scholar] [CrossRef]
- Dorey, R.; Yeomans, J.; Smith, P. Effect of pore clustering on the mechanical properties of ceramics. J. Eur. Ceram. Soc. 2002, 22, 403–409. [Google Scholar] [CrossRef]
- Gallucci, E.; Scrivener, K.; Groso, A.; Stampanoni, M.; Margaritondo, G. 3D experimental investigation of the microstructure of cement pastes using synchrotron X-ray microtomography. Cem. Concr. Res. 2007, 37, 360–368. [Google Scholar] [CrossRef]
- Chung, S.-Y.; Han, T.-S.; Yun, T.S.; Yeom, K.S. Evaluation of the anisotropy of the void distribution and the stiffness of lightweight aggregates using CT imaging. Constr. Build. Mater. 2013, 48, 998–1008. [Google Scholar] [CrossRef]
- Kearsley, E.P.; Wainwright, P.J. The effect of porosity on the strength of foamed concrete. Cem. Concr. Res. 2002, 32, 233–239. [Google Scholar] [CrossRef]
- Hilal, A.A.; Thom, N.H.; Dawson, A.R. On entrained pore size distribution of foamed concrete. Constr. Build. Mater. 2015, 75, 227–233. [Google Scholar] [CrossRef]
- Wei, S.; Yuqiang, C.; Yunsheng, Z.; Jones, M.R. Characterization and simulation of microstructure and thermal properties of foamed concrete. Constr. Build. Mater. 2013, 47, 1278–1291. [Google Scholar] [CrossRef]
- Wei, S.; Yunsheng, Z.; Jones, M.R. Three-dimensional numerical modeling and simulation of the thermal properties of foamed concrete. Constr. Build. Mater. 2014, 50, 421–431. [Google Scholar]
- Narayanan, N.; Ramamurthy, K. Structure and properties of aerated concrete: A review. Cem. Concr. Compos. 2000, 22, 321–329. [Google Scholar] [CrossRef]
- Hilal, A.A.; Thom, N.H.; Dawson, A.R. On void structure and strength of foamed concrete made without/with additives. Constr. Build. Mater. 2015, 85, 157–164. [Google Scholar] [CrossRef]
- Patterson, B.M.; Escobedo-Diaz, J.P.; Dennis-Koller, D.; Cerreta, E. Dimensional quantification of embedded voids or objects in three dimensions using X-ray tomograph. Microsc. Microanal. 2012, 18, 390–398. [Google Scholar] [CrossRef] [PubMed]
- Natesayer, K.; Chan, C.; Sinha-Ray, S.; Song, D.; Lin, C.L.; Miller, J.D.; Garboczi, E.J.; Foster, A.M. X-ray CT imaging and finite element computations of the elastic properties of a rigid organic foam compared to experimental measurements: Insights into foam variability. J. Mater. Sci. 2015, 50, 4012–4024. [Google Scholar] [CrossRef]
- Torquato, S. Random Heterogeneous Materials; Springer: New York, NY, USA, 2002; pp. 327–335. [Google Scholar]
- Tewari, A.; Gokhale, A.M.; Spowart, J.E.; Miracle, D.B. Quantitative characterization of spatial clustering in three-dimensional microstructures using two-point correlation functions. Acta Mater. 2004, 52, 307–319. [Google Scholar] [CrossRef]
- Gokhale, A.; Tewari, A.; Garmestani, H. Constraints on microstructural two-point correlation functions. Scr. Mater. 2005, 53, 989–993. [Google Scholar] [CrossRef]
- Lu, B.; Torquato, S. Lineal-path function for random heterogeneous materials. Phys. Rev. A 1992, 45, 922–929. [Google Scholar] [CrossRef] [PubMed]
- Chung, S.-Y.; Han, T.-S. Reconstruction of random two-phase polycrystalline solids using low-order probability functions and evaluation of mechanical behavior. Comput. Mater. Sci. 2010, 49, 705–719. [Google Scholar] [CrossRef]
- Ke, Y.; Beaucour, A.L.; Ortola, S.; Dumontet, H.; Cabrillac, R. Influence of volume fraction and characteristics of lightweight aggregates on the mechanical properties of concrete. Constr. Build. Mater. 2009, 23, 2821–2828. [Google Scholar] [CrossRef]
- Neithalath, N.; Sumanassoriya, M.S.; Deo, O. Characterizing pore volume, size, and connectivity in pervious concretes for permeability prediction. Mater. Charact. 2010, 61, 802–813. [Google Scholar] [CrossRef]
- Plastics–Determination of Thermal Conductivity and Thermal Diffusivity–Part 2: Transient Plane Heat Source (Hot Disk) Method; ISO 22007-2:2015, DIN EN 1990; International Organization for Standardization: Geneva, Switzerland, 2015.
- Luca, S. Preparing Foamed Concrete for Wall Backfillings, Comprises Forming Cement Paste Comprising Cement, Water and Network Agent by Mixing of the Components in Planet Mixer, Forming a Foam by Foam Generator, and Mixing the Paste and the Foam. DE Patent App. DE201-010-062-762, 14 June 2012. [Google Scholar]
- Boone, M.; Witte, Y.D.; Dierick, M.; Bulcke, J.V.; Vlassenbroeck, J.; Hoorebeke, V. Practical use of the modified bronnikov algorithm in micro-CT. Nucl. Instrum. Methods Phys. Res. Sect. B 2009, 267, 1182–1186. [Google Scholar] [CrossRef]
- Otsu, N. A threshold selection method from gray-level histograms. Man. Cybern. 1979, 9, 62–66. [Google Scholar] [CrossRef]
- Chen, Q.; Yang, X.; Petriu, E.M. Watershed segmentation for binary images with different distance transforms. In Proceedings of the 3rd IEEE International Workshop on Haptic, Audio and Visual Environments and Their Applications, Ottawa, ON, Canada, 2–3 October 2004; Volume 2–3, pp. 111–116. [Google Scholar]
- Videla, A.; Lin, C.-L.; Miller, J.D. Watershed functions applied to a 3D image segmentation problem for the analysis of packed particle beds. Part. Part. Syst. Char. 2006, 23, 237–245. [Google Scholar] [CrossRef]
- Babcsan, N.; Beke, S.; Szamel, G.; Borzsonyu, T.; Szabo, B.; Mokso, R.; Kadar, C.; Kiss, J.B. Characterizsation of ALUHAB aluminium foams with micro-CT. Procedia Mater. Sci. 2014, 4, 69–74. [Google Scholar] [CrossRef]
- Cui, F.; Wang, X. L.; Peng, S.; Vogel, C. A Parallel Algorithm for Quasi Euclidean Distance Transform. J. Image Gr. 2004, 6, 1–6. [Google Scholar]
- MATLAB Version 7.10; The MathWorks Inc.: Natick, MA, USA, 2015.
- Chung, S.-Y.; Han, T.-S.; Kim, S.-Y.; Lee, T.-H. Investigation of the permeability of porous concrete reconstructed using probabilistic description methods. Constr. Build. Mater. 2014, 66, 760–770. [Google Scholar] [CrossRef]
- Chung, S.-Y.; Abd Elrahman, M.; Stephan, D.; Kamm, P.H. Investigation of characteristics and responses of insulating cement paste specimens with Aer solids using X-ray micro-computed tomography. Constr. Build. Mater. 2016, 118, 204–215. [Google Scholar] [CrossRef]
- Vecchio, I.; Schladitz, K.; Godehardt, M. Geometrical Characterization of Particles in 3D with an Application to Technical Cleanliness; Fraunhofer-Institut fur Techno- und Wirtschaftsmathematik: Kaiserslautern, Germany, 2011; pp. 1–33. [Google Scholar]
- ABAQUS Version 6.13; Dassault Systemes: Pawtucket, RI, USA, 2013.
- Chung, S.-Y.; Stephan, D.; Abd Elrahman, M.; Han, T.-S. Effects of anisotropic voids on thermal properties of insulating media investigated using 3D printed samples. Constr. Build. Mater. 2016, 111, 529–542. [Google Scholar] [CrossRef]
- Incropera, F.P.; Dewitt, D.P.; Bergman, T.L.; Lavine, A.S. Fundamentals of Heat and Mass Transfer; John Wiley and Sons: New York, NY, USA, 2006; pp. 127–139. [Google Scholar]
- Kmiecik, P.; Kaminski, M. Modelling of reinforced concrete structures and composite structures with concrete strength degradation taken into consideration. Arch. Civ. Mech. Eng. 2011, 11, 623–636. [Google Scholar] [CrossRef]
- Jones, M.R. Foamed concrete for structural use. In Proceeding of One Day Seminar on Foamed Concrete: Properties, Applications and Latest Technological Developments; Loughborough University: Reading, UK, 2001; pp. 24–33. [Google Scholar]
- Sayadi, A.A.; Tapia, J.V.; Neitzert, T.R.; Clifton, G.C. Effects of expanded polystyrene (EPS) particles on fire resistance, thermal conductivity and compressive strength of foamed concrete. Constr. Build. Mater. 2016, 112, 716–724. [Google Scholar] [CrossRef]
- Jankowiak, T.; Lodygowski, T. Identification of parameters of concrete damage plasticity constitutive model. Found. Civ. Environ. Eng. 2008, 6, 53–69. [Google Scholar]
Specimen | LithoPore®100 | LithoPore®200 | LithoPore®450 | LithoPore®600 |
---|---|---|---|---|
Target (dry) density (kg/m) | 100 | 200 | 450 | 600 |
Wet density (kg/m) | 150–158 | 305–315 | 530–545 | 710–760 |
Cement content (kg/m) | 61 | 170 | 215 | 285 |
Water (kg/m) | 28 | 77 | 125 | 225 |
Foam content (kg/m) | 67.2 | 64.3 | 59.2 | 52.0 |
Filler (fly ash and calcium carbonate) (kg/m) | - | - | 95 | 215 |
Network former LithoFoam® (kg/m) | 6 | 5 | 5 | 4 |
Stabilizer LithoFoam® (kg/m) | 0.6 | 0.6 | 0.6 | 0.6 |
Specimens | LithoPore®100 | LithoPore®200 | LithoPore®450 | LithoPore®600 |
---|---|---|---|---|
Thermal conductivity (W/m/K) | 0.05 | 0.08 | 0.14 | 0.24 |
Density (kg/m) | 100 | 200 | 450 | 600 |
Specific heat (J/g/K) | 435 | 380 | 250 | 178 |
Specimens | LithoPore®100 | LithoPore®200 | LithoPore®450 | LithoPore®600 |
---|---|---|---|---|
Elastic modulus (GPa) | 0.6 | 0.9 | 2.5 | 2.9 |
Poisson’s ratio | 0.3 | 0.3 | 0.2 | 0.2 |
Yield strength (MPa) | 0.45 | 0.9 | 4.2 | 7.2 |
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Chung, S.-Y.; Lehmann, C.; Abd Elrahman, M.; Stephan, D. Pore Characteristics and Their Effects on the Material Properties of Foamed Concrete Evaluated Using Micro-CT Images and Numerical Approaches. Appl. Sci. 2017, 7, 550. https://doi.org/10.3390/app7060550
Chung S-Y, Lehmann C, Abd Elrahman M, Stephan D. Pore Characteristics and Their Effects on the Material Properties of Foamed Concrete Evaluated Using Micro-CT Images and Numerical Approaches. Applied Sciences. 2017; 7(6):550. https://doi.org/10.3390/app7060550
Chicago/Turabian StyleChung, Sang-Yeop, Christian Lehmann, Mohamed Abd Elrahman, and Dietmar Stephan. 2017. "Pore Characteristics and Their Effects on the Material Properties of Foamed Concrete Evaluated Using Micro-CT Images and Numerical Approaches" Applied Sciences 7, no. 6: 550. https://doi.org/10.3390/app7060550