Study On Numerical Simulation And Quality Control Of Foam Concrete Mixing Process

Foam concrete has many excellent properties, such as low density, heat insulation, fire prevention, etc., and is widely used in many kinds of construction projects. Although it has been developed rapidly, the research on the mixing process is not enough. The quality of foam and slurry mixing will seriously affect the quality of foam concrete, only high-quality foam evenly distributed in the slurry, and forming a closed spherical chamber in the hardening process, in which case it can effectively improve the foam concrete the nature and quality of the project. But existing quality control methods usually only through control of the bulk density, which can not guarantee the quality of foam concrete, so the research and optimization of mixed bubble process, improve the paste and foam mixing uniformity, and controlled by this method, improve the property and quality of the foam concrete, which to promote the foam concrete application and development as well as the construction industry energy saving and environmental protection has great significance.The paper research results of static mixer and numerical simulation, based on existing technology bubble mix, combined with practical problems in the mixing process, established mixed bubble tube three-dimensional solid model, and designed the bubble mixing process values simulation and optimization of bubble mixing process, improve the uniformity of the data obtained by calculating the analysis to control, improve and protect the quality of engineering quality foam concrete.Finally, the experiment determined using mixture model for multiphase flow, standard k-? turbulence model and SIMPLE algorithm to do simulation experiment. Study respectively determine the double slurry entrance, pitch of 0.1 m, the best design length of 0.60 m standard spiral structure; 3 blade, blade- void ratio is 1.5, the component interval of 0.08 m, the best design length of 0.80 m pulp plate blade structure optimization design; In addition, the influence of the inclination angle and other working parameters on the mixing process was studied, and the results provide a theoretical and data support for the design and optimization of mixing equipment.