Study on performance of iron material shielding concrete pavement under low frequency electromagnetic waves
This paper expounds the raw material selection and test method of the shielding concrete pavement made of iron material,and studies the pavement performance,durability and electromagnetic shielding performance of the shielding concrete pavement made of iron material.The results show that the compressive strength of shielding concrete pavement material without steel slag powder is similar to that of ordinary concrete pavement material,and the flexural strength is better than that of ordinary concrete pavement material,meeting the requirements of 300 freeze-thaw cycles.With the increase of the content of iron material and the thickness of concrete,the shielding effectiveness of shielding concrete pavement material increases gradually.At 2.45GHz frequency,the shielding effectiveness value increases by 2.8dB with every 1cm increase in the thickness of concrete,with 30%fine aggregate steel slag powder,40%coarse aggregate magnetite and 60%hematite.
万方数据
维普
