The role of particle technology in developing sustainable construction materials

Abstract This paper presents a brief review of the role of particle technology in the development of low-CO 2 aluminosilicate ‘geopolymer’ binders and concretes as an alternative to traditional Portland cement-based materials. The role of particle shape in particular is highlighted, both in the context of its effect on paste rheology and on water demand. The spherical particles of fly ash and the platy particles of metakaolin show opposite effects in each of these areas, and this must be understood and controlled if an effective geopolymer concrete is to be designed. The angular particles of blast furnace slag are also important in determining paste rheology and porosity. The selection of the correct combination of aggregate gradings is critical in maximising concrete durability, as the ability of aggregates to pack sufficiently densely in a hardened concrete product then hinders the ability of aggressive external agents to migrate into the concrete and cause structural damage to either the binder or the embedded steel reinforcing.

[1]  Pierre-Henri Jezequel,et al.  Mixability and particle size distribution criteria — Study on model materials , 2009 .

[2]  John L. Provis,et al.  Effect of Calcium Silicate Sources on Geopolymerisation , 2008 .

[3]  Per Goltermann,et al.  Packing of aggregates : An alternative tool to determine the optimal aggregate mix , 1997 .

[4]  Kostas Komnitsas,et al.  Geopolymerisation of low calcium ferronickel slags , 2007 .

[5]  Moray D. Newlands,et al.  Comparison of particle packing models for proportioning concrete constitutents for minimum voids ratio , 2002 .

[6]  Francisca Puertas,et al.  Effect of superplasticisers on the behaviour and properties of alkaline cements , 2003 .

[7]  J. Thomassin,et al.  Experimental hydration of two synthetic glassy blast furnace slags in water and alkaline solutions (NaOH and KOH 0.1 N) at 40° C: structure, composition and origin of the hydrated layer , 1990 .

[8]  V M Malhotra,et al.  Blended Fly Ash Cements A Review , 1999 .

[9]  J. Deventer,et al.  The Role of Inorganic Polymer Technology in the Development of ‘Green Concrete’ , 2007 .

[10]  J. Provis,et al.  Designing Precursors for Geopolymer Cements , 2008 .

[11]  Ángel Palomo,et al.  Engineering Properties of Alkali-Activated Fly Ash Concrete , 2006 .

[12]  Measurement of aggregate interfacial porosity in complex, multi-phase aggregate concrete: Binary mask production using backscattered electron, and energy dispersive X-ray images , 2006 .

[13]  E. Samson,et al.  Durability of concrete — Degradation phenomena involving detrimental chemical reactions , 2008 .

[14]  John L. Provis,et al.  Spatial distribution of pores in fly ash-based inorganic polymer gels visualised by Wood’s metal intrusion , 2009 .

[15]  C. Shi,et al.  Alkali-Activated Cements and Concretes , 2003 .

[16]  J. Bai,et al.  Metakaolin and calcined clays as pozzolans for concrete: a review , 2001 .

[17]  Adil Amirjanov,et al.  Optimization of a Computer Simulation Model for Packing of Concrete Aggregates , 2008 .

[18]  N Bouzoubaâ,et al.  The effect of grinding on the physical properties of fly ashes and a portland cement clinker , 1997 .

[19]  B. Rangan,et al.  DEVELOPMENT AND PROPERTIES OF LOW-CALCIUM FLY ASH-BASED GEOPOLYMER CONCRETE , 2005 .

[20]  J. Deventer,et al.  Understanding the relationship between geopolymer composition, microstructure and mechanical properties , 2005 .

[21]  Thierry Sedran,et al.  Mixture-proportioning of high-performance concrete , 2002 .

[22]  Tao Ji,et al.  A concrete mix proportion design algorithm based on artificial neural networks , 2006 .

[23]  Hjh Jos Brouwers,et al.  Flow analysis of water-powder mixtures: Application to specific surface area and shape factor , 2009 .

[24]  J. Davidovits.  Geopolymers : inorganic polymeric new materials , 1991 .

[25]  Waltraud M. Kriven,et al.  The effect of alkali and Si/Al ratio on the development of mechanical properties of metakaolin-based geopolymers , 2007 .

[26]  Maria C.G. Juenger,et al.  The use of nitrogen adsorption to assess the microstructure of cement paste , 2001 .

[27]  Paul Mccormick,et al.  Investigation of a synthetic aluminosilicate inorganic polymer , 2002 .

[28]  K. Shimoda,et al.  Total understanding of the local structures of an amorphous slag: Perspective from multi-nuclear (29Si, 27Al, 17O, 25Mg, and 43Ca) solid-state NMR , 2008 .

[29]  Phillip Frank Gower Banfill,et al.  Properties of alkali-activated fly ashes determined from rheological measurements , 2005 .

[30]  Moray D. Newlands,et al.  Estimation of the filler content required to minimise voids ratio in concrete , 2003 .

[31]  F. H. Hsu,et al.  Positron Annihilation Lifetime Spectra in a Metakaolin‐Based Geopolymer , 2008 .

[32]  J. Deventer,et al.  Geopolymer technology: the current state of the art , 2007 .

[33]  H. H. C. Wong,et al.  Packing density of cementitious materials: Measurement and modelling , 2008 .

[34]  Hjh Jos Brouwers,et al.  The work of Powers and Brownyard revisited: Part 1 , 2004 .

[35]  John L. Provis,et al.  Structural Evolution of Fly Ash Based Geopolymers in Alkaline Environments , 2008 .

[36]  Aminul Islam Laskar,et al.  Rheological behavior of high performance concrete with mineral admixtures and their blending , 2008 .

[37]  Ken W Day,et al.  Concrete Mix Design, Quality Control and Specification , 1994 .

[38]  Sidney Diamond,et al.  Mercury porosimetry: An inappropriate method for the measurement of pore size distributions in cement-based materials , 2000 .

[39]  F. Larrard.  Concrete Mixture Proportioning: A Scientific Approach , 1999 .

[40]  Runyu Yang,et al.  Discrete particle simulation of particulate systems: A review of major applications and findings , 2008 .

[41]  Sanjay Kumar,et al.  Influence of reactivity of fly ash on geopolymerisation , 2007 .

[42]  P. Banfill,et al.  Alkali activated fly ash: effect of admixtures on paste rheology , 2009 .

[43]  J. Deventer,et al.  Thermal evolution of metakaolin geopolymers: Part 1 – Physical evolution , 2006 .