Experimental study on cement mortar with magnetized water treated by composite time-varying electromagnetic fields
Wu Zhao, Jinliang Wang, Tao Li, Chang Ni
TL;DR
This study explores how magnetized water, treated with different electromagnetic fields, affects the strength and properties of cement mortar.
Contribution
The novelty lies in demonstrating the synergistic effects of combined time-varying electromagnetic fields on enhancing cement mortar properties.
Findings
Magnetized water treatment increased compressive strength by up to 32.5% in cement mortar.
Combined DC-sinusoidal fields at 5 kHz improved 7-day compressive strength to 19.39 MPa.
Key water properties like pH, conductivity, and viscosity increased significantly after treatment.
Abstract
The present study investigated the effects of composite time-varying electromagnetic fields on the microstructure and macroscopic mechanical properties of cement-based composites. Fourteen magnetized water samples were prepared using direct current (DC), sinusoidal/triangular/rectangular alternating currents (AC) and their combined electromagnetic field configurations. Comprehensive characterization was conducted to elucidate the evolution of physicochemical properties and their subsequent effects on the compressive strength of M20 cement mortar. The experimental findings demonstrated that critical parameters of magnetized water, the maximum increases in pH value, conductivity and viscosity of water, were 30.9%, 32.3% and 24.3% respectively. Conversely, surface tension displayed an inverse relationship with frequency elevation. Studies have shown that the application of magnetized water…
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Taxonomy
TopicsMagnetic and Electromagnetic Effects · Microbial Applications in Construction Materials · Electromagnetic Effects on Materials