English：

In order to improve the strength of foam concrete and the stability of foam, nine kinds of foamconcrete were prepared by magnetized water in permanent magnetic field for 1, 5, and 10 times at theflow rates of 0.65, 1.65, and 2.65m / s, respectively. The foam stability, compressive strength, andsplitting tensile strength tests were carried out on them, and compared with the specimens usingunmagnetized water. The test results show that the foam stability, compressive strength and splittingtensile strength of foam concrete are significantly improved after the use of magnetized water. The flowrate of water and the number of times through the permanent magnetic field are important factors.Compared with the unmagnetized control group, when the magnetized water flow rate is 0.65m / s and1.65m / s, the mechanical properties of the magnetized 10 times specimen are the best, when themagnetized water flow rate is 2.65m / s, the mechanical properties of the specimen magnetized once arethe best.