Haydite used as conductive concrete aggregate and preparation thereof

Abstract

The present invention relates to a porcelain granule used as a conductive concrete aggregate and a preparation method thereof. The porcelain granule used as a conductive concrete aggregate is characterized in that: the porcelain granule is prepared by burning clay, iron powder and Fe2O3; the weight percentage of each material is as follows: 77 to 94 percent of clay, 3 to 10 percent of iron powder, 3 to 5 percent of coke dust, as well as 0 to 8 percent of Fe2O3; the sum of the weight percentage of each material is 100 percent. The preparation method for the porcelain granule used as a conductive concrete aggregate is characterized by comprising the following steps: 1) preprocessing the materials: the clay selected from soil is dried to have a water content being equal to or less than 5 percent, after being cracked, the clay is grinded to the powder the grain diameter of which is equal to or less than 0.1mm; then the coke sold in the market is cracked, and grinded into the powder the grain diameter of which is equal to or less than 0.1mm to obtain the coke dust; 2) selecting the materials; 3) shaping a blank: water is added for stirring, and the stirred materials are prepared into the ball-shaped grain blanks the grain diameters of which are between 5mm and 15mm by a pan-pelletizer; and 4) baking the porcelain granule to obtain the porcelain granule used as a conductive concrete aggregate. The porcelain granule used in the concrete as the aggregate can enhance the conductive performance of the concrete.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to ceramsite used as conductive concrete aggregate and a preparation method thereof. Background technique [0002] At present, conductive concrete is based on the original composition of concrete by adding appropriate conductive phase components, so that the concrete material has a certain degree of self-sensing, self-adaptation and damage self-repair under the effects of force-electricity and electricity-force. According to these characteristics, it can effectively predict the damage inside the concrete material, meet the needs of structural self-safety inspection, and improve the safety of concrete structures. Or the heating of concrete can be achieved through the electro-thermal effect, so that it has functions such as snow melting and deicing. [0003] In the past, the conductive phase materials added in the preparation of conductive concrete are usually carbon fib...

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Problems solved by technology

However, on the one hand, it is quite difficult to disperse these materials evenly in the cement stone, which affects the uniformity of the conductive network; on the other hand, the conductive network formed by these conductive phase materials is only distributed in the cement stone, and in the unit In volumetric concrete, the volume content of cement-stone phase itself only accounts for about 30%, and exists in the voids formed by aggregate accumulation.

Therefore, the formed conductive network is unevenly distributed for the concrete material as a whole, which affects the conductive performance of concrete.

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