Effect of nano-particles and aminosilane interaction on the performances of cement-based composites: An experimental study

Abstract The aim of the present study was to experimentally investigate the interaction between a low replacement ratio of different nano-particles (SiO 2 , Al 2 O 3 , clay, and CaCO 3 ) and aminosilane in the matrices of cement paste and mortar. Results showed that the optimum content of aminosilane for improving the 28-day compressive strength of cement mortar was 0.75% (by weight of the total binder). The utilization of nano-SiO 2 and nano-clay particles improved the strengths of the cement mortar containing hybrid systems of nano-particles/aminosilane at early (7 days) and middle curing ages (28 and 91 days). The 28-day compressive strength enhancement of cement mortar with hybrid systems of nano-SiO 2 /aminosilane and nano-clay/aminosilane was about 19% and 20%, respectively. Additionally, the application of aminosilane with nano-CaCO 3 and nano-Al 2 O 3 particles showed lower efficacy on mechanical performance of the cement-based composites in comparison with nano-clay and nano-SiO 2 . Despite the fact that the utilization of aminosilane with and without different nano-particles enhanced the flowability of the cement paste and mortar, it reduced the electrical resistivity of the cement mortar. In this regard, the minimum electrical resistivity was achieved for specimens with only aminosilane. This reduction was about 19.5% for samples containing 0.75% aminosilane for a curing time of 28 days.

[1]  Mohamad Ibrahim Mohamad,et al.  Toward green revolution in concrete industry: the role of nanotechnology (a review) , 2011 .

[2]  David J. Corr,et al.  Study of the mechanisms underlying the fresh-state response of cementitious materials modified with nanoclays , 2012 .

[3]  It Meng Low,et al.  Microstructures and mechanical properties of hemp fabric reinforced organoclay–cement nanocomposites , 2013 .

[4]  Reza Hosseinpourpia,et al.  Production of waste bio-fiber cement-based composites reinforced with nano-SiO2 particles as a substitute for asbestos cement composites , 2012 .

[5]  Dachamir Hotza,et al.  Effect of nano-silica on rheology and fresh properties of cement pastes and mortars , 2009 .

[6]  A. Liu,et al.  Effect of Nano-CaCO3 on Properties of Cement Paste , 2012 .

[7]  Dachamir Hotza,et al.  Mortars with nano-SiO2 and micro-SiO2 investigated by experimental design , 2010 .

[8]  Wander L. Vasconcelos,et al.  Chemical functionalization of ceramic tile surfaces by silane coupling agents: polymer modified mortar adhesion mechanism implications , 2008 .

[9]  Taijiro Sato,et al.  Seeding Effect of Nano-CaCO3 on the Hydration of Tricalcium Silicate , 2010 .

[10]  James J. Beaudoin,et al.  A.C. impedance spectroscopy (II): Microstructural characterization of hydrating cement-silica fume systems , 1993 .

[11]  K. Kalcher,et al.  The influence of aminosilanes on macroscopic properties of cement paste , 2008 .

[12]  K. Bilba,et al.  Silane treatment of bagasse fiber for reinforcement of cementitious composites , 2008 .

[13]  Ana Guerrero,et al.  Improvement of initial mechanical strength by nanoalumina in belite cements , 2007 .

[14]  Y. Qing,et al.  Influence of nano-SiO2 addition on properties of hardened cement paste as compared with silica fume , 2007 .

[15]  R. Iler.  The Chemistry of Silica: Solubility, Polymerization, Colloid and Surface Properties and Biochemistry of Silica , 1979 .

[16]  Hadi Bahadori,et al.  Reduction of Cement Consumption by the Aid of Silica Nano-Particles (Investigation on Concrete Properties) , 2012 .

[17]  J. Ou,et al.  Microstructure of cement mortar with nano-particles , 2004 .

[18]  Jeng-Ywan Shih,et al.  Material properties of portland cement paste with nano-montmorillonite , 2007 .

[19]  D.D.L. Chung,et al.  Improving silica fume cement by using silane , 2000 .

[20]  H. Nikraz,et al.  Effects of nano-Al2O3 on early-age microstructural properties of cement paste , 2014 .

[21]  Daniel Cusson,et al.  Field Performance of Concrete Repair Systems on Highway Bridge , 2006 .

[22]  Xianming Shi,et al.  Chloride Permeability and Microstructure of Portland Cement Mortars Incorporating Nanomaterials , 2008 .

[23]  Abdul-Ghani Olabi,et al.  Effect of nano clay particles on mechanical, thermal and physical behaviours of waste-glass cement mortars , 2011 .

[24]  Li Jiahe,et al.  Analysis of the damping behavior and microstructure of cement matrix with silane-treated silica fume , 2006 .

[25]  Abbas Booshehrian,et al.  Influence of Nano-SiO2 Addition on Microstructure and Mechanical Properties of Cement Mortars for Ferrocement , 2010 .

[26]  Zhenhua Li,et al.  Investigations on the preparation and mechanical properties of the nano-alumina reinforced cement composite , 2006 .

[27]  Alireza Khaloo,et al.  Improving the performance of cement-based composites containing superabsorbent polymers by utilization of nano-SiO2 particles , 2012 .

[28]  J. Labrincha,et al.  Effect of nano-SiO2 and nano-TiO2 addition on the rheological behavior and the hardened properties of cement mortars , 2012 .