Double-layer stainless steel fiber conductive cement concrete

Abstract

The invention provides double-layer stainless steel fiber conductive cement concrete. The cement concrete comprises two stainless steel electrode plates with holes, a bottom matrix cement concrete layer, a bottom stainless steel fiber layer, an intermediate matrix cement concrete layer, a top stainless steel fiber layer and a surface matrix cement concrete layer, wherein the two stainless steel electrode plates penetrate through the two opposite sides of the cement concrete; and the five layers are paved from bottom to top in sequence. A preparation method of the cement concrete is characterized by firstly penetrating the two stainless steel electrode plates with holes through the two opposite sides of the concrete and then paving bottom matrix concrete, spreading bottom stainless steel fibers, pouring the intermediate matrix concrete layer, spreading top stainless steel fibers and paving surface matrix concrete from bottom to top in sequence, wherein the matrix concrete layers are mixed with conductive materials such as stainless steel fibers or graphite; and the stainless steel fibers are uniformly paved and have spreading quantity of 1.4-2.4kg / m<2>. The cement concrete has low resistivity, excellent heat-conducting property, high compressive strength and low manufacturing cost and can be used in the fields such as snow melting and deicing on the concrete pavements, decks and airfield runways, heating, static prevention and power equipment grounding.

Description

technical field [0001] The invention relates to the technical field of conductive cement concrete, in particular to a double-layer stainless steel fiber conductive cement concrete. Background technique [0002] Cement concrete pavement has the advantages of high strength, good stability, good anti-skid performance, wear resistance, long service life, etc., so it has been widely used in countries all over the world. my country's highways, urban roads, and airports have built a large number of cement concrete pavements. The construction and normal operation of these infrastructures play an inestimable role in the development of the entire national economy. In the cold winter, when the cement concrete road surface is frozen due to snowfall, it has a serious impact on the smoothness of the road and driving safety, and even causes the closure of roads and airports, causing inconvenience to passenger and cargo transportation, and also to construction units. cause huge economic l...

AI Technical Summary

Problems solved by technology

In graphite conductive concrete, due to the small length-to-diameter ratio of powdered graphite, it is difficult to form a connected conductive network in the concrete, and a relatively high content is often required. The graphite content is generally about 20% of the cement mass, and the content is relatively high. And this kind of concrete The compressive strength of the conductive concrete decreases sharply with the increase of graphite content; in the alkaline environment of cement, the surface of the steel fiber produces an oxidation passivation layer, which makes the resistivity stability of the conductive concrete poor; the carbon fiber is small, and the overlapping contact surface is relatively small Small, it needs to increase the dosage to improve the conductivity of concrete, and too high carbon fiber content will make the fibers cluster into bundles during mixing, which is difficult to disperse, and the price of carbon fiber is expensive, so that the cost of conductive concrete is much higher than that of ordinary concrete, restricting development of conductive concrete

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