Highly-conductive graphite concrete

Abstract

The invention relates to a highly-conductive graphite concrete, which solves the problem that the resistance of the graphite conductive concrete does not drop obviously along with the increase of thegraphite addition amount. The highly-conductive graphite concrete is prepared from the following raw materials by weight percent: 5 to 13 percent of silicate cement, 14 to 20 percent of water, 0.3 to10 percent of dispersant composition, 3.8 to 5.4 percent of water retention component, 1.4 to 3.4 percent of agglomerant, 6 to 9 percent of graphite powder, 25 to 50 percent of coal gangue, 10 to 25 percent of stones, and 9 to 28 percent of sand. The graphite powder is flake graphite or earthy graphite, and the dispersant composition is formed by compounding nonionic surfactant and anionic surfactant. In a mixed system, no lap joint exists between graphite flakes and between graphite flakes. The prepared concrete has no chain loop and discontinuous loop and no insulation loop having no graphite area, and the resistivity is less than 9 omega-M, the compressive strength is high, and the slump loss is small.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a high-conductivity graphite concrete. Background technique [0002] With the development of engineering technology, conductive concrete has appeared in building construction, which solves the key technical problems that are difficult to solve in special projects. In the current prior art, the main use is to add graphite to concrete. After graphite is added to concrete, its particles are close to equiaxed and the aspect ratio is small. It is difficult to form a complete conductive network in concrete, and when the amount is large, due to the low strength of the conductive phase itself and the water absorption of the conductive phase material, the amount of concrete mixing water will increase significantly, and the strength of concrete at each age will drop significantly. The cohesion is weakened, the water retention is reduced, and the slump loss is large, which makes...

AI Technical Summary

Problems solved by technology

In the current prior art, the main use is to add graphite to concrete. After graphite is added to concrete, its particles are close to equiaxed and the aspect ratio is small. It is difficult to form a complete conductive network in concrete, and when the amount is large, due to the low strength of the conductive phase itself and the water absorption of the conductive phase material, the amount of concrete mixing water will increase significantly, and the strength of concrete at each age will drop significantly. The cohesion is weakened, the water retention is reduced, and the slump loss is large, so it is difficult to meet the requirements of civil engineering for mechanical properties