Preparation of Electric- and Magnetic-Activated Water and Its Influence on the Workability and Mechanical Properties of Cement Mortar

Cement-based materials prepared with activated water induced by a magnetic field or electric field represent a possible solution to environmental issues caused by the worldwide utilization of chemical admixtures. In this contribution, electric- and magnetic-activated water have been produced. The workability and mechanical properties of cement mortar prepared with this activated water have been investigated. The results indicate that the pH and absorbance (Abs) values of the water varied as the electric and magnetic field changed, and their values increased significantly, exhibiting improved activity compared with that of the untreated water. In addition, activated water still retains activity within 30 min of the resting time. The fluidity of the cement paste prepared with electric-activated water was significantly larger than that of the untreated paste. However, the level of improvement differed with the worst performance resulting from cement paste prepared with alternating voltage activated water. In terms of mechanical properties, both compressive strength and flexural strength obtained its maximum values at 280 mT with two processing cycles. The compressive strength increased 26% as the curing time increased from 7 days to 28 days and flexural strength increased by 31%. In addition, through the introduction of magnetic-activated water into cement mortar, the mechanical strength can be maintained without losing its workability when the amount of cement is reduced.

[1]  Junjie Wang,et al.  Influences of thermal damage on water transport in heat-treated cement mortar: Experimental and theoretical analyses , 2021, Construction and Building Materials.

[2]  Myungkwan Lim,et al.  Study on the Bending and Joint Performances of Reinforced Concrete Beams Using High-Strength Rebars , 2021 .

[3]  Ahmed M. Soliman,et al.  Influence of Fine Recycled Concrete Powder on the Compressive Strength of Self-Compacting Concrete (SCC) Using Artificial Neural Network , 2021, Sustainability.

[4]  M. Kohail,et al.  Enhancement of the Concrete Durability with Hybrid Nano Materials , 2021, Sustainability.

[5]  Peng Zhang,et al.  Effects of magnesia expansive agents on the self-healing performance of microcracks in strain-hardening cement-based composites (SHCC) , 2020 .

[6]  Junjie Wang,et al.  Influence of water re-curing on microstructure of heat-damaged cement mortar characterized by low-field NMR and MIP , 2020 .

[7]  T. Zhao,et al.  Influence of exposure environments and moisture content on water repellency of surface impregnation of cement-based materials , 2020 .

[8]  Peng Zhang,et al.  Experimental and numerical study on chloride transport in cement mortar during drying process , 2020, Construction and Building Materials.

[9]  Peng Zhang,et al.  Application of three self-developed ECT sensors for monitoring the moisture content in sand and mortar , 2020 .

[10]  X. Shu,et al.  Pyrolysis of municipal solid waste with iron-based additives: A study on the kinetic, product distribution and catalytic mechanisms , 2020, Journal of Cleaner Production.

[11]  R. A. F. Peixoto,et al.  Enhancing the eco-efficiency of concrete using engineered recycled mineral admixtures and recycled aggregates , 2020 .

[12]  L. Yi,et al.  Fabrication of recyclable multi-responsive magnetic nanoparticles for emulsified oil-water separation , 2020 .

[13]  T. Zhao,et al.  Influence of the incorporation of recycled coarse aggregate on water absorption and chloride penetration into concrete , 2020 .

[14]  Shingo Asamoto,et al.  Applicability of machine learning to a crack model in concrete bridges , 2020, Comput. Aided Civ. Infrastructure Eng..

[15]  Xu Zhao,et al.  Sustainable and easy recoverable magnetic TiO2-Lignocellulosic Biomass@Fe3O4 for solar photocatalytic water remediation , 2019, Journal of Cleaner Production.

[16]  J. de Brito,et al.  Effect of Magnetized Water on the Mechanical and Durability Properties of Concrete Block Pavers , 2018, Materials.

[17]  Peng Zhang,et al.  Application of neutron imaging to investigate fundamental aspects of durability of cement-based materials: A review , 2018, Cement and Concrete Research.

[18]  Yan Wang,et al.  A Risk Evaluation Method with an Improved Scale for Tunnel Engineering , 2018 .

[19]  A. Kheyroddin,et al.  An investigation on the fresh and hardened properties of self-compacting concrete incorporating magnetic water with various pozzolanic materials , 2018 .

[20]  F. Wittmann,et al.  Influence of freeze-thaw cycles on capillary absorption and chloride penetration into concrete , 2017 .

[21]  H. I. Ahmed.  Behavior of magnetic concrete incorporated with Egyptian nano alumina , 2017 .

[22]  M. Ranjbar,et al.  Characteristics and applications of magnetized water as a green technology , 2017 .

[23]  Jianjun Luo,et al.  Influence of magnetic water on early-age shrinkage cracking of concrete , 2017 .

[24]  Etsuo Sakai,et al.  Chemical admixtures — Chemistry, applications and their impact on concrete microstructure and durability , 2015 .

[25]  J. J. Soto-Bernal,et al.  Effects of Static Magnetic Fields on the Physical, Mechanical, and Microstructural Properties of Cement Pastes , 2015 .

[26]  Y. Ou,et al.  The effect of a static magnetic field on the hydrogen bonding in water using frictional experiments , 2013 .

[27]  Surendra P. Shah,et al.  Effects of colloidal nanosilica on rheological and mechanical properties of fly ash–cement mortar , 2013 .

[28]  X. Pang,et al.  The influences of magnetized water on physical properties of concrete , 2011, 2011 International Conference on Applied Superconductivity and Electromagnetic Devices.

[29]  K. Hover.  The influence of water on the performance of concrete , 2011 .

[30]  M. Gholizadeh,et al.  Improving Mechanical Properties of High Strength Concrete by Magnetic Water Technology , 2010 .

[31]  Hongwei Yang,et al.  THE EFFECTS OF MAGNETIC FIELDS ON WATER MOLECULAR HYDROGEN BONDS , 2009 .

[32]  F. Tietz,et al.  Electrical Conductivity of Sintered Chromia Mixed with TiO2, CuO and Mn-Oxides , 2009 .

[33]  Saddam M. Ahmed.  Effect of Magnetic Water on Engineering Properties of Concrete , 2009 .

[34]  T. Ramalho,et al.  Influence of magnetic field on physical–chemical properties of the liquid water: Insights from experimental and theoretical models , 2008 .

[35]  Tarun R. Naik,et al.  Sustainability of Concrete Construction , 2008 .

[36]  M. S. Ansari,et al.  Increase of water viscosity under the influence of magnetic field , 2006 .

[37]  Georges Maurin,et al.  Effect of a magnetic water treatment on homogeneous and heterogeneous precipitation of calcium carbonate. , 2006, Water research.

[38]  S. Rai,et al.  Magnetic restructuring of water , 1995, Medical and Biological Engineering and Computing.

[39]  I. Danielewicz-Ferchmin,et al.  Phase diagram of electrostricted H2O at surfaces of electrodes at 273-373 K: electric critical point of water. , 2005, Chemphyschem : a European journal of chemical physics and physical chemistry.

[40]  A Amirfazli,et al.  Development of a new methodology to study drop shape and surface tension in electric fields. , 2004, Langmuir : the ACS journal of surfaces and colloids.

[41]  N. Su,et al.  Effect of magnetic field treated water on mortar and concrete containing fly ash , 2003 .

[42]  A. Ruchinskene,et al.  Corrosion Behavior of Low-Carbon Steel in Tap Water Treated with Permanent Magnetic Field , 2003 .

[43]  B. S. Choo,et al.  Advanced concrete technology , 2003 .

[44]  G. Lu,et al.  Monte Carlo simulation of liquid water in a magnetic field , 2000 .

[45]  Nan Su,et al.  Effect of magnetic water on the engineering properties of concrete containing granulated blast-furnace slag , 2000 .

[46]  Liu Yan.  EXPERIMENTAL STUDY ABOUT MODIFYING CEMENT SLURRY IN PHYSICS FIELD , 2000 .

[47]  Miroslav Colic,et al.  The elusive mechanism of the magnetic ‘memory’ of water , 1999 .

[48]  R. Horne.  Marine Chemistry: The Structure of Water and the Chemistry of the Hydrosphere , 1969 .