钢筋电极导电发热混凝土的研究

Research on Electrically Conductive Concrete Using Steel Bar as Electrode

提出利用钢筋良好的导电性来制作导电发热混凝土的电极,并进行了相关的实验研究.通过实验发现此种发热混凝土电阻达到稳定的时间要比一般混凝土的固化期长,用细不锈钢钢筋为电极得到的电阻率最低,此种发热混凝土的电阻随电压的升高而降低明显,而升温实验表明所制造出的发热混凝土是成功的.文中所做的研究不仅可以将碳纤维导电发热混凝土所需的碳纤维体积含量降低到0.29%左右,大幅降低制造导电发热混凝土的成本,而且还可以有效地提高导电发热混凝土铺层的强度.

Steel bar with good electrical conductivity is used as electrode in making carbon fiber （CF） electrically conductive concrete for heating. The pertinent experiments illustrate that this kind of conductive concrete has a longer curing time than normal cement on electrical resistivity. Low electrical resistivity can be obtained when stainless steel bar with a minor diameter is used. The electrical resistance of this conductive concrete decreases apparently with the increase of voltage. The temperature rise experiment illustrates the success of the design. Not only can the study reduce the minimum CF content of the CF electrically conductive concrete for heating application to 0.29%, but also it can enhance the strength of the concrete slab effectively.