2 results about "Aerosol powder" patented technology

The invention discloses a device and a method for measuring aerosol release share and particle size distribution under damage of lead-bismuth fuel. The device comprises a high-pressure gas tank, an aerosol weighing device, a simulation fuel rod, a crevasse sealing device, a collecting device, a wet particle size analyzer, a pipeline valve and a measuring instrument, the high-pressure gas tank is used for providing gas required by the whole device, the aerosol weighing device is used for weighing aerosol powder used in the fuel rod in an initial state, and the simulated fuel rod is designed according to the size and the structure of the real lead-bismuth reactor fuel rod and is used for accommodating high-pressure gas and aerosol and constructing cladding crevices with different shapes and sizes; the crevasse sealing device is used for sealing a crevasse to construct a closed environment in the fuel rod, the collecting device serves as a containing place for aerosol released by the fuel rod to facilitate subsequent sampling measurement, and the wet particle size analyzer is used for measuring particle size distribution of aerosol particles. The device disclosed by the invention can be used for measuring the release share and the particle size distribution of the aerosol in the fuel rod pellet-cladding gap through the cladding crevasse, and can be used for researching the release characteristics of the aerosol under different fission gas pressures and different crevasse sizes and morphologies.

This invention discloses a heavy-duty durable airport pavement RPC and its preparation method, comprising the following components in parts by weight: 15-30 parts silica fume, 20-50 parts mineral powder, 0-25 parts fly ash, 0-25 parts microspheres, 8-15 parts graphene, 1.5-8 parts composite microsurfactant, 8-25 parts aerosol powder, and 10-15 parts retarding high-efficiency water-reducing agent. The composite microsurfactant includes 1-3 parts sodium glutamate and 0.5-5 parts sodium carboxymethyl cellulose. The heavy-duty durable airport pavement RPC provided by this invention, with solid waste materials as the main body, combined with composite microsurfactants and retarding high-efficiency water-reducing agents, can significantly improve the flexural strength and freeze-thaw resistance of airport pavement concrete when used in concrete, improve the performance of airport pavement concrete, ensure the service life of airport pavement, reduce the amount of maintenance work, and lower construction and maintenance costs.