Electromagnetic wave absorption concrete and production method thereof
A technology of electromagnetic wave absorption and concrete, which is applied in the cross field of building material science and electromagnetic science, can solve the problems of low wave absorption efficiency, narrow effective frequency band, poor mechanical properties, etc., and achieve the effect of increasing the space action area
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Embodiment 1
[0026] An electromagnetic wave-absorbing concrete, the volume percentages of wave-absorbing ceramsite (aggregate) and wave-absorbing cement slurry are 40% and 60% respectively; wherein manganese-zinc ferrite powder (wave-absorbing agent) accounts for The percentage by volume is 15%, and its preparation method comprises the following steps:
[0027] 1) Preparation of microwave-absorbing ceramsite: Weigh clay, titanium dioxide, magnesium carbonate and sodium sulfate at 60%, 30%, 5% and 5% by mass respectively, and then mix, granulate and fire in sequence (Heat up to 1280°C at a rate of 20°C / min, calcine at a constant temperature for 10min, and cool to room temperature with the furnace), and the wave-absorbing functional ceramsite is obtained, with a cylinder compressive strength of 7.3MPa, a particle size of 2-5mm, and an apparent density of 1.45g / cm 3 .
[0028] 2) Pretreatment of the wave-absorbing ceramsite: calculate and weigh the mass of the wave-absorbing ceramsite accor...
Embodiment 2
[0037] A kind of electromagnetic wave-absorbing concrete, the wave-absorbing function ceramsite (aggregate) and wave-absorbing cement slurry account for 70% and 30% respectively by volume; 3%, its preparation method comprises the following steps:
[0038] 1) Preparation of microwave-absorbing ceramsite: Weigh clay, titanium dioxide, magnesium carbonate and sodium sulfate at a mass percentage of 85%, 10%, 3% and 2%, respectively, and perform mixing, granulation, and firing in sequence (Heating up to 1120°C at a rate of 5°C / min, calcining at a constant temperature for 45min, and cooling to room temperature with the furnace), the microwave-absorbing functional ceramsite was obtained, with a cylinder compressive strength of 9.8MPa, a particle size of 5-10mm, and an apparent density of 1.37 g / cm 3 .
[0039] 2) Pretreatment of the wave-absorbing ceramsite: calculate and weigh the mass of the wave-absorbing ceramsite according to the volume content of the wave-absorbing ceramsite ...
Embodiment 3
[0048] An electromagnetic wave-absorbing concrete, the volume percentages of wave-absorbing functional ceramsite (aggregate) and wave-absorbing cement slurry are 50% and 50% respectively; wherein high-structure carbon black (wave-absorbing agent) accounts for 50% of the volume of wave-absorbing cement slurry Percentage is 8%, and its preparation method comprises the following steps:
[0049] 1) Preparation of microwave-absorbing ceramsite: Weigh clay, titanium dioxide, magnesium carbonate and sodium sulfate at a mass percentage of 77%, 20%, 2% and 1%, respectively, and perform mixing, granulation, and firing in sequence (heat up to 1200°C at a rate of 10°C / min, calcine at a constant temperature for 30min, and cool to room temperature with the furnace), and the microwave-absorbing functional ceramsite is obtained, with a cylinder compressive strength of 9.9MPa, a particle size of 8-12mm, and an apparent density of 1.42 g / cm 3 .
[0050] 2) Pretreatment of the wave-absorbing c...
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