Experimental evaluation and modeling of drying shrinkage behavior of metakaolin and calcined kaolin blended concretes

Abstract In the first stage of the study presented herein, the findings of an experimental study on drying shrinkage behavior of concretes incorporated with high reactivity commercial metakaolin (MK) and calcined kaolins (CKs) were reported. Free shrinkage strain measurements as well as corresponding weight loss were measured over 60 days of drying. Four different types of kaolins obtained from local sources were calcined and used as mineral admixture for concrete production. Moreover, commercial metakaolin of high purity was also used as reference material for comparison. In the second stage of the study, prediction models through gene expression programming (GEP) and multiple linear regression (MLR) were derived. The data set used for training and testing covers the experimental data presented in this study as well as additional ones collected from the literature. The parameters considered for developing the prediction model are related to the characteristic properties of mineral admixture, concrete composition, and drying period. As a result, CK incorporated concretes revealed comparable performance with MK incorporated ones in terms of drying shrinkage and weight loss. Furthermore, the prediction models yielded strong correlation with the experimental results. Statistical analyses also revealed that the proposed models can be handful tools in predicting the drying shrinkage strain of the concretes modified with MK.

[1]  Mehmet Gesoǧlu,et al.  Strength Deterioration of Plain and Metakaolin Concretes in Aggressive Sulfate Environments , 2010 .

[2]  G. Kakali,et al.  Metakaolin as supplementary cementitious material , 2005 .

[3]  Thierry Chotard,et al.  Application of ultrasonic testing to describe the hydration of calcium aluminate cement at the early age , 2001 .

[4]  Surendra P. Shah,et al.  SHRINKAGE CRACKING OF HIGH-STRENGTH CONCRETE , 1996 .

[5]  David E. Goldberg,et al.  Genetic Algorithms in Search Optimization and Machine Learning , 1988 .

[6]  Folker H. Wittmann,et al.  Drying, moisture distribution, and shrinkage of cement-based materials , 2002 .

[7]  Bishwajit Bhattacharjee,et al.  Performance evaluation of rebar in chloride contaminated concrete by corrosion rate , 2009 .

[8]  A. Chaipanich,et al.  Compressive strength and drying shrinkage of fly ash-bottom ash-silica fume multi-blended cement mortars , 2012 .

[9]  Mehmet Gesoǧlu,et al.  Strength, permeability and shrinkage cracking of silica fume and metakaolin concretes , 2012 .

[10]  V. Sirivivatnanon,et al.  Influence of fly ash fineness on strength, drying shrinkage and sulfate resistance of blended cement mortar , 2004 .

[11]  Mehmet Gesoǧlu,et al.  Permeation Properties of Self-Consolidating Concretes with Mineral Admixtures , 2011 .

[12]  John R. Koza,et al.  Genetic programming - on the programming of computers by means of natural selection , 1993, Complex adaptive systems.

[13]  M. Pigeon,et al.  Influence of key parameters on drying shrinkage of cementitious materials , 1999 .

[14]  J. Brooks,et al.  Effect of metakaolin on creep and shrinkage of concrete , 2001 .

[15]  GüneyisiErhan,et al.  Microstructural properties and pozzolanic activity of calcined kaolins as supplementary cementing materials , 2012 .

[16]  W. Al-Khaja,et al.  STRENGTH AND TIME-DEPENDENT DEFORMATIONS OF SILICA FUME CONCRETE FOR USE IN BAHRAIN , 1994 .

[17]  Mehmet Gesoğlu,et al.  Empirical modeling of fresh and hardened properties of self-compacting concretes by genetic programming , 2008 .

[18]  Edward G. Nawy,et al.  CONTROL OF CRACKING IN CONCRETE STRUCTURES , 1972 .

[19]  Konstantin Kovler,et al.  The effect of dehydroxylation/amorphization degree on pozzolanic activity of kaolinite , 2003 .

[20]  S. H Alsayed.  Influence of superplasticizer, plasticizer, and silica fume on the drying shrinkage of high-strength concrete subjected to hot-dry field conditions , 1998 .

[21]  C. Ireland.  Fundamental concepts in the design of experiments , 1964 .

[22]  Cândida Ferreira,et al.  Gene Expression Programming: A New Adaptive Algorithm for Solving Problems , 2001, Complex Syst..

[23]  S. Tsivilis,et al.  EXPLOITATION OF POOR GREEK KAOLINS: STRENGTH DEVELOPMENT OF METAKAOLIN CONCRETE AND EVALUATION BY MEANS OF K-VALUE , 2004 .

[24]  Gilles Escadeillas,et al.  Study of the reactivity of cement/metakaolin binders at early age for specific use in steam cured precast concrete , 2009 .

[25]  E. Güneyisi,et al.  Comparative study on strength, sorptivity, and chloride ingress characteristics of air-cured and water-cured concretes modified with metakaolin , 2007 .

[26]  S. A. Al-Saleh,et al.  Effects of drying conditions, admixtures and specimen size on shrinkage strains , 2006 .

[27]  S. Tsivilis,et al.  The effect of metakaolin on the corrosion behavior of cement mortars , 2005 .

[28]  Zongjin Li,et al.  Effects of Metakaolin and Silica Fume on Properties of Concrete , 2002 .

[29]  Mehmet Gesoğlu,et al.  Strength and drying shrinkage properties of self-compacting concretes incorporating multi-system blended mineral admixtures , 2010 .

[30]  Mehmet Gesoǧlu,et al.  Improving strength, drying shrinkage, and pore structure of concrete using metakaolin , 2008 .

[31]  Yan Yao,et al.  A study on creep and drying shrinkage of high performance concrete , 2001 .

[32]  Han-Young Moon,et al.  Strength properties and durability aspects of high strength concrete using Korean metakaolin , 2007 .