Investigation of the mechanical behaviour of metakaolin-based sandcrete mixtures

This paper investigates the mechanical properties of sandcrete mixes with metakaolin (MK) as a mineral additive. Three different types of binders were prepared: one used as reference, based on 100% w/w ordinary Portland cement (PC), and two modified, where MK replaced PC in percentages 10% or 20% by weight of the reference cement content. Experimental tests have been carried out in order to obtain the full stress–strain diagram for the material under uniaxial compressive loading. The results of the tests have been post-processed numerically in order to obtain various mechanical characteristics of the sandcrete material, such as compressive strength, modulus of elasticity and strain at maximum strength. It has been found that, in general, specimens with metakaolin in the binder exhibit enhanced compressive strength compared to the reference samples without metakaolin. The improvement in compressive strength was more pronounced in samples with higher concentration of binder (50% w/w) and low or medium water per binder (W/B) ratio. Samples with higher compressive strength were characterised by higher values for the measured ultrasonic pulse velocity. The strain values, recorded at maximum strength, are considerably higher than the strain value of 2‰ for concrete under uniaxial compressive load.

[1]  J. Ryou,et al.  Hybrid techniques for quality improvement of recycled fine aggregate , 2014 .

[2]  J. de Brito,et al.  Use of coarse recycled aggregates from precast concrete rejects: Mechanical and durability performance , 2014 .

[3]  A. Minocha,et al.  Recycled aggregate from C&D waste & its use in concrete – A breakthrough towards sustainability in construction sector: A review , 2014 .

[4]  J. Brito,et al.  Properties and composition of recycled aggregates from construction and demolition waste suitable for concrete production , 2014 .

[5]  Kaveh Ahangari,et al.  A Novel Approach in Estimation of the Soilcrete Column's Diameter and Optimization of the High Pressure Jet Grouting Using Adaptive Neuro Fuzzy Inference System (ANFIS) , 2014 .

[6]  Behzad Fatahi,et al.  A constitutive model for cemented clays capturing cementation degradation , 2014 .

[7]  Wenzhong Zhu,et al.  Influence of mixed recycled aggregate on the physical – mechanical properties of recycled concrete , 2014 .

[8]  Her-Yung Wang,et al.  Experimental study and strength formulation of soil-based controlled low-strength material containing stainless steel reducing slag , 2014 .

[9]  Enzo Martinelli,et al.  Compressive strength and hydration processes of concrete with recycled aggregates , 2014 .

[10]  J. de Brito,et al.  Concrete with fine recycled aggregates: a review , 2014 .

[11]  Joaquim Agostinho Barbosa Tinoco,et al.  Support vector machines applied to uniaxial compressive strength prediction of jet grouting columns , 2014 .

[12]  Davide Lo Presti,et al.  Recycled Tyre Rubber Modified Bitumens for road asphalt mixtures: A literature review☆ , 2013 .

[13]  P. G. Asteris,et al.  Mechanical properties of soilcrete mixtures modified with metakaolin , 2013 .

[14]  Jianzhuang Xiao,et al.  Effects of interfacial transition zones on the stress–strain behavior of modeled recycled aggregate concrete , 2013 .

[15]  Mohammed Sonebi,et al.  Optimisation of rheological parameters and mechanical properties of superplasticised cement grouts containing metakaolin and viscosity modifying admixture , 2013 .

[16]  T. Y. Lo,et al.  Mechanical performance, durability, qualitative and quantitative analysis of microstructure of fly ash and Metakaolin mortar at elevated temperatures , 2013 .

[17]  I. Lungu,et al.  SOME EFFECTS OF ECO-CEMENT STABILIZATION OF EXPANSIVE SOILS ON CRITICAL STATE PARAMETERS , 2013 .

[18]  C. Cheeseman,et al.  Use of Oil Drill Cuttings as an Alternative Raw Material in Sandcrete Blocks , 2011 .

[19]  Martin Schneider,et al.  Sustainable cement production—present and future , 2011 .

[20]  Demetrios M. Cotsovos,et al.  Reinforced jet-grouted piles. Part 1: analysis and design , 2010 .

[21]  Demetrios M. Cotsovos,et al.  Reinforced jet-grouted piles. Part 2: materials and tolerances , 2010 .

[22]  Kaveh Ahangari,et al.  Field study of the influence of various jet grouting parameters on soilcrete unconfined compressive strength and its diameter , 2010 .

[23]  Kaveh Ahangari,et al.  Estimation of jet grouting parameters in Shahriar dam, Iran , 2010 .

[24]  Morteza Osanloo,et al.  Effect of grout pressure and grout flow on soil physical and mechanical properties in jet grouting operations , 2009 .

[25]  Dio Ambakederemo Wenapere,et al.  Physico-mechanical behaviour of sandcrete block masonry units , 2009 .

[26]  Oscar Ortiz,et al.  Sustainability in the construction industry: A review of recent developments based on LCA , 2009 .

[27]  Young-Shik Park,et al.  Comparative Study on Compressive Strength of Concrete with New Sand-Cap and Neoprene Pad , 2008 .

[28]  A. Marí,et al.  Influence of Amount of Recycled Coarse Aggregates and Production Process on Properties of Recycled Aggregate Concrete , 2007 .

[29]  Costas A. Anagnostopoulos,et al.  Cement–clay grouts modified with acrylic resin or methyl methacrylate ester: Physical and mechanical properties , 2007 .

[30]  S. Coulter,et al.  Single fluid jet-grout strength and deformation properties , 2006 .

[31]  A. Omoregie,et al.  The influence of fine aggregate combinations on particle size distribution, grading parameters, and compressive strength of sandcrete blocks , 2006 .

[32]  C. Tam,et al.  Microstructural analysis of recycled aggregate concrete produced from two-stage mixing approach , 2005 .

[33]  Selim Altun,et al.  Taguchi approach for optimization of the bleeding on cement-based grouts , 2005 .

[34]  Yung-Show Fang,et al.  Properties of soilcrete stabilized with Jet grouting , 2004 .

[35]  F. Bouchelaghem,et al.  Experimental Determination of the Longitudinal Dispersivity During the Injection of a Micro-Cement Grout in a One-Dimensional Soil Column , 2003 .

[36]  Denys Breysse,et al.  Effect of coarse aggregate on the workability of sandcrete , 2002 .

[37]  P. Erik Mikkelsen,et al.  Cement-Bentonite Grout Backfill for Borehole Instruments , 2002 .

[38]  G. Kakali,et al.  Thermal treatment of kaolin : the effect of mineralogy on the pozzolanic activity , 2001 .

[39]  Wei-Hsing Huang.  Properties of cement-fly ash grout admixed with bentonite, silica fume, or organic fiber , 1997 .

[40]  I. Topcu,et al.  Using waste concrete as aggregate , 1995 .

[41]  J. Walraven.  Fundamental Analysis of Aggregate Interlock , 1981 .

[42]  Joost C. Walraven,et al.  Aggregate interlock: A theoretical and experimental analysis , 1980 .