تأثير الماء المعرض للمجال المغناطيسي على بعض خواص الخرسانة

Abstract

Mixing water was prepared through shedding three magnetic fields of the fixed type, where the water has been passed in a tube diameter of 5 mm on a side put magnets severity required and speeds the flow of the water ranged between (0.2 -0.25 m / s). The research includes the study of the effect of water exposed to the magnetic field passing through (a point magnetic ), was the work of four concrete mixes mixture of reference with tap water in addition to the three mixes with water exposed to magnetic fields strongly (470 mT, 700 mT, 900 mT).Been the focus of this research study , as has been the study of some mechanical properties such as (compressive strength, modulus of elasticity, tensile strength), and some of the physical properties such as (density, absorption, porosity).The study showed a significant improvement in the mechanical properties of concrete when passing water mixing magnetic field intensity of 900 mT, where the rate of increase in the compressive strength of concrete (25.3%, 23.3%) at the age of (1,28) Day respectively, and the percentage increase of the values of the modulus of elasticity and tensile strength at the age of 28 days (22%, 13.2%), respectively. The study also showed an improvement in the physical properties where rates were the difference in the results of density, porosity and absorption (1.6%, -22.4%, -21.2%), respectively.