Evaluation of high-performance concrete with recycled aggregates: Use of densified silica fume as cement replacement

Abstract This paper intends to evaluate the real influence of a commercial densified silica fume (SF) and of recycled concrete aggregates (RA) on the behaviour of high-performance concrete (HPC). For that purpose, three families of concrete with 0%, 5% and 10% silica fume (SF) of the binder’s mass were produced. In addition to the commercial silica fume, fly ash (FA) and superplasticizer (SP) were also incorporated in the concrete mixes. Each type of concrete comprises a reference concrete (RC) and three recycled aggregates concrete (RAC) mixes with replacement percentages (in volume) of fine natural aggregates (FNA) with fine recycled aggregates (FRA) and of coarse natural aggregates (CNA) with coarse recycled aggregates (CRA) of 50/50, 0/100 and 100/100, respectively. Considering the mechanical performance and durability of the concrete mixes, results show that it is possible to incorporate significant amounts of FRA and CRA. Regarding the silica fume, the densification process used in its manufacture seems to lead to the formation of agglomerates that change the real particle size of the SF, originating a loss of performance of the concrete made with them.

[1]  Gonzalez Andreu,et al.  Experimental analysis of properties of high performance recycled aggregate concrete , 2014 .

[2]  Chuanzeng Zhang,et al.  Mechanical Properties of Recycled Aggregate Concrete Under Uniaxial Loading , 2005 .

[3]  Jorge de Brito,et al.  Concrete Made with Coarse Concrete Aggregate: Influence of Curing on Durability , 2012 .

[4]  J. de Brito,et al.  Performance of concrete made with aggregates recycled from precasting industry waste: influence of the crushing process , 2015 .

[5]  Ravindra K. Dhir,et al.  Use of recycled concrete aggregate in high-strength concrete , 2000 .

[6]  Jianzhuang Xiao,et al.  FEM simulation of chloride diffusion in modeled recycled aggregate concrete , 2012 .

[7]  A. Neville.  Properties of Concrete , 1968 .

[8]  Deyu Kong,et al.  Effect and mechanism of surface-coating pozzalanics materials around aggregate on properties and ITZ microstructure of recycled aggregate concrete , 2010 .

[9]  B. González-Fonteboa,et al.  Concretes with aggregates from demolition waste and silica fume. Materials and mechanical properties , 2008 .

[10]  Manabu Kanematsu,et al.  Application of Conventionally Recycled Coarse Aggregate to Concrete Structure by Surface Modification Treatment , 2007 .

[11]  F. Buyle-Bodin,et al.  Utilisation de l'absorption d'eau des bétons comme critères de leur durabilité—Application aux bétons de granulats recyclés , 2000 .

[12]  Ravindra K. Dhir,et al.  Tensile strength behaviour of recycled aggregate concrete , 2015 .

[13]  Michael D.A. Thomas,et al.  The effect of product form of silica fume on its ability to control alkali–silica reaction , 2000 .

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

[15]  Eric Wirquin,et al.  Assessment of the Surface Permeation Properties of Recycled Aggregate Concrete , 2003 .

[16]  Andrzej Ajdukiewicz,et al.  Influence of recycled aggregates on mechanical properties of HS/HPC , 2002 .

[17]  Ravindra K. Dhir,et al.  Prediction of Chloride Ion Penetration of Recycled Aggregate Concrete , 2015 .

[18]  J. Brito,et al.  The effect of superplasticisers on the workability and compressive strength of concrete made with fine recycled concrete aggregates , 2012 .

[19]  Chi Sun Poon,et al.  Effect of microstructure of ITZ on compressive strength of concrete prepared with recycled aggregates , 2004 .

[20]  Özgür Çakır,et al.  Influence of silica fume on mechanical and physical properties of recycled aggregate concrete , 2015 .

[21]  Jiaping Liu,et al.  A new dispersing method on silica fume and its influence on the performance of cement-based materials , 2016 .

[22]  Chi Sun Poon,et al.  Properties of concrete prepared with PVA-impregnated recycled concrete aggregates , 2010 .

[23]  Valeria Corinaldesi,et al.  Influence of mineral additions on the performance of 100% recycled aggregate concrete , 2009 .

[24]  Jong Herman Cahyadi,et al.  Effects of densified silica fume on microstructure and compressive strength of blended cement pastes , 2003 .

[25]  J. Brito,et al.  Influence of the use of recycled concrete aggregates from different sources on structural concrete , 2014 .

[26]  H. Mahmud,et al.  The role of 0–2 mm fine recycled concrete aggregate on the compressive and splitting tensile strengths of recycled concrete aggregate concrete , 2014 .

[27]  H. B. Choi,et al.  Study on interfacial transition zone properties of recycled aggregate by micro-hardness test , 2013 .

[28]  Jianzhuang Xiao,et al.  Interfacial transition zones in recycled aggregate concrete with different mixing approaches , 2012 .

[29]  J. de Brito,et al.  The influence of the use of recycled aggregates on the compressive strength of concrete: a review , 2015 .

[30]  Luís Evangelista,et al.  Microstructural Characterization of Concrete Prepared with Recycled Aggregates , 2013, Microscopy and Microanalysis.

[31]  Sidney Diamond,et al.  Densified silica fume: particle sizes and dispersion in concrete , 2006 .

[32]  Sidney Diamond,et al.  Occurrence of large silica fume-derived paticles in hydrated cement paste , 1992 .

[33]  M. L. Berndt,et al.  Properties of sustainable concrete containing fly ash, slag and recycled concrete aggregate , 2009 .

[34]  A. Neville,et al.  High performance concrete—An overview , 1998 .

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

[36]  J. de Brito,et al.  Rheological behaviour of concrete made with fine recycled concrete aggregates – Influence of the superplasticizer , 2015 .

[37]  Peiyu Yan,et al.  Comparative study of effect of raw and densified silica fume in the paste, mortar and concrete , 2016 .

[38]  A. Katz.  Properties of concrete made with recycled aggregate from partially hydrated old concrete , 2003 .

[39]  J. Brito,et al.  Influence of the pre-saturation of recycled coarse concrete aggregates on concrete properties , 2011 .